Top 30 AWS Certified Developer Associate Exam Tips

AWS Certified Developer Associate Exam Prep

Top 30 AWS Certified Developer Associate Exam Tips

AWS Certified Developer Associate Exam Prep Urls

Get the free app at: android: https://play.google.com/store/apps/details?id=com.awscertdevassociateexampreppro.enoumen

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2022 AWS Cloud Practitioner Exam Preparation

PRO version with mock exam android: https://play.google.com/store/apps/details?id=com.awscertdevassociateexampreppro.enoumen

PRO version with mock exam ios: https://apps.apple.com/ca/app/aws-certified-dev-ass-dva-c01/id1506519319t

2

What to study: DYNAMODB [10-12% of Exam]Scans vs queries (and the APIs, parameters you can use), Local and Global Secondary indexes, Calculating Read Capacity Units (RCUs) and Write, Capacity Units (WCUs), Performance / optimization best practices, Use cases (e.g. session state, key/value data store, scalability), DynamoDB Streams, Use in serverless app with Lambda and API Gateway, DynamoDB Accelerator (DAX) use cases
AWS topics for DVA-C01: DynamoDB


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What to study: AMAZON CLOUDFRONT  
AWS topics for DVA-C01: AMAZON CLOUDFRONT

18

Know what instance types can be launched from which types of AMIs, and which instance types require an HVM AMI
AWS HVM AMI

19

Have a good understanding of how Route53 supports all of the different DNS record types, and when you would use certain ones over others.
Route 53 supports all of the different DNS record types

20

Know which services have native encryption at rest within the region, and which do not.
AWS Services with native Encryption at rest

21

Kinesis Sharding:
#AWS Kinesis Sharding

22

Handling SSL Certificates in ELB ( Wildcard certificate vs SNI )
#AWS Handling SSL Certificates in ELB ( Wildcard certificate vs SNI )

23

Different types of Aurora Endpoints
#AWS Different types of Aurora Endpoints

24

The Default Termination Policy for Auto Scaling Group (Oldest launch configuration vs Instance Protection)
#AWS Default Termination Policy for Auto Scaling Group

25

Use AWS Cheatsheets – I also found the cheatsheets provided by Tutorials Dojo very helpful. In my opinion, it is better than Jayendrapatil Patil’s blog since it contains more updated information that complements your review notes.
#AWS Cheat Sheet

26

Watch this exam readiness 3hr video, it very recent webinar this provides what is expected in the exam.
#AWS Exam Prep Video

27

Start off watching Ryan’s videos. Try and completely focus on the hands on. Take your time to understand what you are trying to learn and achieve in those LAB Sessions.
#AWS Exam Prep Video

28

Do not rush into completing the videos. Take your time and hone the basics. Focus and spend a lot of time for the back bone of AWS infrastructure – Compute/EC2 section, Storage (S3/EBS/EFS), Networking (Route 53/Load Balancers), RDS, VPC, Route 3. These sections are vast, with lot of concepts to go over and have loads to learn. Trust me you will need to thoroughly understand each one of them to ensure you pass the certification comfortably.
#AWS Exam Prep Video

29

Make sure you go through resources section and also AWS documentation for each components. Go over FAQs. If you have a question, please post it in the community. Trust me, each answer here helps you understand more about AWS.
#AWS Faqs

30

Like any other product/service, each AWS offering has a different flavor. I will take an example of EC2 (Spot/Reserved/Dedicated/On Demand etc.). Make sure you understand what they are, what are the pros/cons of each of these flavors. Applies for all other offerings too.
#AWS Services

31

Follow Neal K Davis on Linkedin and Read his updates about DVA-C01
#AWS Services

What is the AWS Certified Developer Associate Exam?

The AWS Certified Developer – Associate examination is intended for individuals who perform a development role and have one or more years of hands-on experience developing and maintaining an AWS-based application. It validates an examinee’s ability to:

  • Demonstrate an understanding of core AWS services, uses, and basic AWS architecture best practices
  • Demonstrate proficiency in developing, deploying, and debugging cloud-based applications using AWS

There are two types of questions on the examination:

  • Multiple-choice: Has one correct response and three incorrect responses (distractors).
  • Provide implementation guidance based on best practices to the organization throughout the lifecycle of the project.

Select one or more responses that best complete the statement or answer the question. Distractors, or incorrect answers, are response options that an examinee with incomplete knowledge or skill would likely choose. However, they are generally plausible responses that fit in the content area defined by the test objective. Unanswered questions are scored as incorrect; there is no penalty for guessing.

To succeed with the real exam, do not memorize the answers below. It is very important that you understand why a question is right or wrong and the concepts behind it by carefully reading the reference documents in the answers.

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AWS Certified Developer Associate info and details

The AWS Certified Developer Associate Exam is a multiple choice, multiple answer exam. Here is the Exam Overview:

Top

Other AWS Facts and Summaries and Questions/Answers Dump

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Additional Information for reference

Below are some useful reference links that would help you to learn about AWS Practitioner Exam.

Other Relevant and Recommended AWS Certifications

AWS Certification Exams Roadmap AWS Certification Exams Roadmap[/caption]

AWS Developer Associate Exam Whitepapers:

AWS has provided whitepapers to help you understand the technical concepts. Below are the recommended whitepapers.

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Online Training and Labs for AWS Certified Developer Associate Exam

Top

AWS Certified Developer Associate Jobs

Top 60 AWS Solution Architect Associate Exam Tips

aws certified solution architect exam prep

Top 60 AWS Solution Architect Associate Exam Tips

SAA Exam Prep App urls

Solution Architect FREE version:
Google Play Store (Android)
Apple Store (iOS)
Pwa: Web
Amazon android: Amazon App Store (Android)
Microsoft/Windows10:

0 In a nutshell, below are the resources and apps that you need for SAA-C02 Exam Prep:

2022 AWS Cloud Practitioner Exam Preparation

Read FAQs and learn more about the following topics in details: Load Balancing, DynamoDB, EBS, Multi-AZ RDS, Aurora, EFS, DynamoDB, NLB, ALB, Aurora, Auto Scalling, DynamoDB(latency), Aurora(performance), Multi-AZ RDS(high availability), Throughput Optimized EBS (highly sequential), Read the quizlet note cards about Cloudwatch, CloudTrail, KMS, ElasticBeanstalk, OpsWorks here. Read Dexter’s Barely passed AWS Cram Notes about RPO vs RTO, HA vs FT, Undifferentiated Heavy Lifting, Access Management Basics, Shared Responsibility Model, Cloud Service Models
AWS topics for SAA-CO1 and SAA-CO2

1

Know what instance types can be launched from which types of AMIs, and which instance types require an HVM AMI
AWS HVM AMI

2

Understand bastion hosts, and which subnet one might live on. Bastion hosts are instances that sit within your public subnet and are typically accessed using SSH or RDP. Once remote connectivity has been established with the bastion host, it then acts as a ‘jump’ server, allowing you to use SSH or RDP to login to other instances (within private subnets) deeper within your network. When properly configured through the use of security groups and Network ACLs, the bastion essentially acts as a bridge to your private instances via the Internet.”
Bastion Hosts

3

Know the difference between Directory Service’s AD Connector and Simple AD. Use Simple AD if you need an inexpensive Active Directory–compatible service with the common directory features. AD Connector lets you simply connect your existing on-premises Active Directory to AWS.
AD Connector and Simple AD

4


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Know how to enable cross-account access with IAM: To delegate permission to access a resource, you create an IAM role that has two policies attached. The permissions policy grants the user of the role the needed permissions to carry out the desired tasks on the resource. The trust policy specifies which trusted accounts are allowed to grant its users permissions to assume the role. The trust policy on the role in the trusting account is one-half of the permissions. The other half is a permissions policy attached to the user in the trusted account that allows that user to switch to, or assume the role.
Enable cross-account access with IAM

5

Have a good understanding of how Route53 supports all of the different DNS record types, and when you would use certain ones over others.
Route 53 supports all of the different DNS record types

6

Know which services have native encryption at rest within the region, and which do not.
AWS Services with native Encryption at rest

7

Know which services allow you to retain full admin privileges of the underlying EC2 instances
EC2 Full admin privilege

8

Know When Elastic IPs are free or not: If you associate additional EIPs with that instance, you will be charged for each additional EIP associated with that instance per hour on a pro rata basis. Additional EIPs are only available in Amazon VPC. To ensure efficient use of Elastic IP addresses, we impose a small hourly charge when these IP addresses are not associated with a running instance or when they are associated with a stopped instance or unattached network interface.
When are AWS Elastic IPs Free or not?

9

Know what are the four high level categories of information Trusted Advisor supplies.
#AWS Trusted advisor

10

Know how to troubleshoot a connection time out error when trying to connect to an instance in your VPC. You need a security group rule that allows inbound traffic from your public IP address on the proper port, you need a route that sends all traffic destined outside the VPC (0.0.0.0/0) to the Internet gateway for the VPC, the network ACLs must allow inbound and outbound traffic from your public IP address on the proper port, etc.
#AWS Connection time out error

11

Be able to identify multiple possible use cases and eliminate non-use cases for SWF.
#AWS

12

Understand how you might set up consolidated billing and cross-account access such that individual divisions resources are isolated from each other, but corporate IT can oversee all of it.
#AWS Set up consolidated billing

13

Know how you would go about making changes to an Auto Scaling group, fully understanding what you can and can’t change. “You can only specify one launch configuration for an Auto Scaling group at a time, and you can’t modify a launch configuration after you’ve created it. Therefore, if you want to change the launch configuration for your Auto Scaling group, you must create a launch configuration and then update your Auto Scaling group with the new launch configuration. When you change the launch configuration for your Auto Scaling group, any new instances are launched using the new configuration parameters, but existing instances are not affected.
#AWS Make Change to Auto Scaling group

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Know how you would go about making changes to an Auto Scaling group, fully understanding what you can and can’t change. “You can only specify one launch configuration for an Auto Scaling group at a time, and you can’t modify a launch configuration after you’ve created it. Therefore, if you want to change the launch configuration for your Auto Scaling group, you must create a launch configuration and then update your Auto Scaling group with the new launch configuration. When you change the launch configuration for your Auto Scaling group, any new instances are launched using the new configuration parameters, but existing instances are not affected.
#AWS Make Change to Auto Scaling group

15

Know which field you use to run a script upon launching your instance.
#AWS User data script

16

Know how DynamoDB (durable, and you can pay for strong consistency), Elasticache (great for speed, not so durable), and S3 (eventual consistency results in lower latency) compare to each other in terms of durability and low latency.
#AWS DynamoDB consistency

17

Know the difference between bucket policies, IAM policies, and ACLs for use with S3, and examples of when you would use each. “With IAM policies, companies can grant IAM users fine-grained control to their Amazon S3 bucket or objects while also retaining full control over everything the users do. With bucket policies, companies can define rules which apply broadly across all requests to their Amazon S3 resources, such as granting write privileges to a subset of Amazon S3 resources. Customers can also restrict access based on an aspect of the request, such as HTTP referrer and IP address. With ACLs, customers can grant specific permissions (i.e. READ, WRITE, FULL_CONTROL) to specific users for an individual bucket or object.
#AWS Difference between bucket policies

18

Know when and how you can encrypt snapshots.
#AWS EBS Encryption

19

Understand how you can use ELB cross-zone load balancing to ensure even distribution of traffic to EC2 instances in multiple AZs registered with a load balancer.
#AWS ELB cross-zone load balancing

20

How would you allow users to log into the AWS console using active directory integration. Here is a link to some good reference material.
#AWS og into the AWS console using active directory integration

21

Spot instances are good for cost optimization, even if it seems you might need to fall back to On-Demand instances if you wind up getting kicked off them and the timeline grows tighter. The primary (but still not only) factor seems to be whether you can gracefully handle instances that die on you–which is pretty much how you should always design everything, anyway!
#AWS Spot instances

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The term “use case” is not the same as “function” or “capability”. A use case is something that your app/system will need to accomplish, not just behaviour that you will get from that service. In particular, a use case doesn’t require that the service be a 100% turnkey solution for that situation, just that the service plays a valuable role in enabling it.
#AWS use case

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There might be extra, unnecessary information in some of the questions (red herrings), so try not to get thrown off by them. Understand what services can and can’t do, but don’t ignore “obvious”-but-still-correct answers in favour of super-tricky ones.
#AWS Exam Answers: Distractors

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If you don’t know what they’re trying to ask, in a question, just move on and come back to it later (by using the helpful “mark this question” feature in the exam tool). You could easily spend way more time than you should on a single confusing question if you don’t triage and move on.
#AWS Exa: Skip Questions that are vague and come back to them later

25

Some exam questions required you to understand features and use cases of: VPC peering, cross-account access, DirectConnect, snapshotting EBS RAID arrays, DynamoDB, spot instances, Glacier, AWS/user security responsibilities, etc.
#AWS

26

The 30 Day constraint in the S3 Lifecycle Policy before transitioning to S3-IA and S3-One Zone IA storage classes
#AWS S3 lifecycle policy

27

Enabling Cross-region snapshot copy for an AWS KMS-encrypted cluster
Redis Auth / Amazon MQ / IAM DB Authentication

#AWS Cross-region snapshot copy for an AWS KMS-encrypted cluster

28

Know that FTP is using TCP and not UDP (Helpful for questions where you are asked to troubleshoot the network flow)
TCP and UDP

29

Know the Difference between S3, EBS and EFS
#AWS Difference between S3, EBS and EFS

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Kinesis Sharding:
#AWS Kinesis Sharding

31

Handling SSL Certificates in ELB ( Wildcard certificate vs SNI )
#AWS Handling SSL Certificates in ELB ( Wildcard certificate vs SNI )

32

Difference between OAI, Signed URL (CloudFront) and Pre-signed URL (S3)
#AWS Difference between OAI, Signed URL (CloudFront) and Pre-signed URL (S3)

33

Different types of Aurora Endpoints
#AWS Different types of Aurora Endpoints

34

The Default Termination Policy for Auto Scaling Group (Oldest launch configuration vs Instance Protection)
#AWS Default Termination Policy for Auto Scaling Group

35

Watch Acloud Guru Videos Lectures while commuting / lunch break – Reschedule the exam if you are not yet ready
#AWS ACloud Guru

36

Watch Linux Academy Videos Lectures while commuting / lunch break – Reschedule the exam if you are not yet ready
#AWS Linux Academy

37

Watch Udemy Videos Lectures while commuting / lunch break – Reschedule the exam if you are not yet ready
#AWS Linux Academy

38

The Udemy practice test interface is good that it pinpoints your weak areas, so what I did was to re-watch all the videos that I got the wrong answers. Since I was able to gauge my exam readiness, I decided to reschedule my exam for 2 more weeks, to help me focus on completing the practice tests.
#AWS Udemy

39

Use AWS Cheatsheets – I also found the cheatsheets provided by Tutorials Dojo very helpful. In my opinion, it is better than Jayendrapatil Patil’s blog since it contains more updated information that complements your review notes.
#AWS Cheat Sheet

40

Watch this exam readiness 3hr video, it very recent webinar this provides what is expected in the exam.
#AWS Exam Prep Video

41

Start off watching Ryan’s videos. Try and completely focus on the hands on. Take your time to understand what you are trying to learn and achieve in those LAB Sessions.
#AWS Exam Prep Video

42

Do not rush into completing the videos. Take your time and hone the basics. Focus and spend a lot of time for the back bone of AWS infrastructure – Compute/EC2 section, Storage (S3/EBS/EFS), Networking (Route 53/Load Balancers), RDS, VPC, Route 3. These sections are vast, with lot of concepts to go over and have loads to learn. Trust me you will need to thoroughly understand each one of them to ensure you pass the certification comfortably.
#AWS Exam Prep Video

43

Make sure you go through resources section and also AWS documentation for each components. Go over FAQs. If you have a question, please post it in the community. Trust me, each answer here helps you understand more about AWS.
#AWS Faqs

44

Like any other product/service, each AWS offering has a different flavor. I will take an example of EC2 (Spot/Reserved/Dedicated/On Demand etc.). Make sure you understand what they are, what are the pros/cons of each of these flavors. Applies for all other offerings too.
#AWS Services

45

Ensure to attend all quizzes after each section. Please do not treat these quizzes as your practice exams. These quizzes are designed to mostly test your knowledge on the section you just finished. The exam itself is designed to test you with scenarios and questions, where in you will need to recall and apply your knowledge of different AWS technologies/services you learn over multiple lectures.
#AWS Services

46

I, personally, do not recommend to attempt a practice exam or simulator exam until you have done all of the above. It was a little overwhelming for me. I had thoroughly gone over the videos. And understood the concepts pretty well, but once I opened exam simulator I felt the questions were pretty difficult. I also had a feeling that videos do not cover lot of topics. But later I realized, given the vastness of AWS Services and offerings it is really difficult to encompass all these services and their details in the course content. The fact that these services keep changing so often, does not help
#AWS Services

47

Go back and make a note of all topics, that you felt were unfamiliar for you. Go through the resources section and fiund links to AWS documentation. After going over them, you shoud gain at least 5-10% more knowledge on AWS. Have expectations from the online courses as a way to get thorough understanding of basics and strong foundations for your AWS knowledge. But once you are done with videos. Make sure you spend a lot of time on AWS documentation and FAQs. There are many many topics/sub topics which may not be covered in the course and you would need to know, atleast their basic functionalities, to do well in the exam.
#AWS Services

48

Once you start taking practice exams, it may seem really difficult at the beginning. So, please do not panic if you find the questions complicated or difficult. IMO they are designed or put in a way to sound complicated but they are not. Be calm and read questions very carefully. In my observation, many questions have lot of information which sometimes is not relevant to the solution you are expected to provide. Read the question slowly and read it again until you understand what is expected out of it.
#AWS Services

49

With each practice exam you will come across topics that you may need to scale your knowledge on or learn them from scratch.
#AWS Services

50

With each test and the subsequent revision, you will surely feel more confident.
There are 130 mins for questions. 2 mins for each question which is plenty of time.
At least take 8-10 practice tests. The ones on udemy/tutorialdojo are really good. If you are a acloudguru member. The exam simulator is really good.
Manage your time well. Keep patience. I saw someone mention in one of the discussions that do not under estimate the mental focus/strength needed to sit through 130 mins solving these questions. And it is really true.
Do not give away or waste any of those precious 130 mins. While answering flag/mark questions you think you are not completely sure. My advice is, even if you finish early, spend your time reviewing the answers. I could review 40 of my answers at the end of test. And I at least rectified 3 of them (which is 4-5% of total score, I think)
So in short – Put a lot of focus on making your foundations strong. Make sure you go through AWS Documentation and FAQs. Try and envision how all of the AWS components can fit together and provide an optimal solution. Keep calm.
This video gives outline about exam, must watch before or after Ryan’s course. #AWS Services

51

Walking you through how to best prepare for the AWS Certified Solutions Architect Associate SAA-C02 exam in 5 steps:
1. Understand the exam blueprint
2. Learn about the new topics included in the SAA-C02 version of the exam
3. Use the many FREE resources available to gain and deepen your knowledge
4. Enroll in our hands-on video course to learn AWS in depth
5. Use practice tests to fully prepare yourself for the exam and assess your exam readiness
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

52

Storage:
1. Know your different Amazon S3 storage tiers! You need to know the use cases, features and limitations, and relative costs; e.g. retrieval costs.
2. Amazon S3 lifecycle policies is also required knowledge — there are minimum storage times in certain tiers that you need to know.
3. For Glacier, you need to understand what it is, what it’s used for, and what the options are for retrieval times and fees.
4. For the Amazon Elastic File System (EFS), make sure you’re clear which operating systems you can use with it (just Linux).
5. For the Amazon Elastic Block Store (EBS), make sure you know when to use the different tiers including instance stores; e.g. what would you use for a datastore that requires the highest IO and the data is distributed across multiple instances? (Good instance store use case)
6. Learn about Amazon FSx. You’ll need to know about FSx for Windows and Lustre.
7. Know how to improve Amazon S3 performance including using CloudFront, and byte-range fetches — check out this whitepaper.
8. Make sure you understand about Amazon S3 object deletion protection options including versioning and MFA delete.
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

53

Compute:
1. You need to have a good understanding of the options for how to scale an Auto Scaling Group using metrics such as SQS queue depth, or numbers of SNS messages.
2. Know your different Auto Scaling policies including Target Tracking Policies.
3. Read up on High Performance Computing (HPC) with AWS. You’ll need to know about Amazon FSx with HPC use cases.
4. Know your placement groups. Make sure you can differentiate between spread, cluster and partition; e.g. what would you use for lowest latency? What about if you need to support an app that’s tightly coupled? Within an AZ or cross AZ?
5. Make sure you know the difference between Elastic Network Adapters (ENAs), Elastic Network Interfaces (ENIs) and Elastic Fabric Adapters (EFAs).
6. For the Amazon Elastic Container Service (ECS), make sure you understand how to assign IAM policies to ECS for providing S3 access. How can you decouple an ECS data processing process — Kinesis Firehose or SQS?
7. Make sure you’re clear on the different EC2 pricing models including Reserved Instances (RI) and the different RI options such as scheduled RIs.
8. Make sure you know the maximum execution time for AWS Lambda (it’s currently 900 seconds or 15 minutes).
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

54

Network
1. Understand what AWS Global Accelerator is and its use cases.
2. Understand when to use CloudFront and when to use AWS Global Accelerator.
3. Make sure you understand the different types of VPC endpoint and which require an Elastic Network Interface (ENI) and which require a route table entry.
4. You need to know how to connect multiple accounts; e.g. should you use VPC peering or a VPC endpoint?
5. Know the difference between PrivateLink and ClassicLink.
6. Know the patterns for extending a secure on-premises environment into AWS.
7. Know how to encrypt AWS Direct Connect (you can use a Virtual Private Gateway / AWS VPN).
8. Understand when to use Direct Connect vs Snowball to migrate data — lead time can be an issue with Direct Connect if you’re in a hurry.
9. Know how to prevent circumvention of Amazon CloudFront; e.g. Origin Access Identity (OAI) or signed URLs / signed cookies.
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

55

Databases
1. Make sure you understand Amazon Aurora and Amazon Aurora Serverless.
2. Know which RDS databases can have Read Replicas and whether you can read from a Multi-AZ standby.
3. Know the options for encrypting an existing RDS database; e.g. only at creation time otherwise you must encrypt a snapshot and create a new instance from the snapshot.
4. Know which databases are key-value stores; e.g. Amazon DynamoDB.
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

56

Application Integration
1. Make sure you know the use cases for the Amazon Simple Queue Service (SQS), and Simple Notification Service (SNS).
2. Understand the differences between Amazon Kinesis Firehose and SQS and when you would use each service.
3. Know how to use Amazon S3 event notifications to publish events to SQS — here’s a good “How To” article.
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

57

Management and Governance
1. You’ll need to know about AWS Organizations; e.g. how to migrate an account between organizations.
2. For AWS Organizations, you also need to know how to restrict actions using service control policies attached to OUs.
3. Understand what AWS Resource Access Manager is.
AWS CERTIFIED SOLUTIONS ARCHITECT SAA-C02 : HOW TO BEST PREPARE IN 5 STEPS

About this App

The AWS Certified Solution Architect Associate Examination reparation and Readiness Quiz App (SAA-C01, SAA-C01, SAA) Prep App helps you prepare and train for the AWS Certification Solution Architect Associate Exam with various questions and answers dumps.

This App provide updated Questions and Answers, an Intuitive Responsive Interface allowing to browse questions horizontally and browse tips and resources vertically after completing a quiz.

Features:

  • 100+ Questions and Answers updated frequently to get you AWS certified.
  • Quiz with score tracker, countdown timer, highest score saving. Vie Answers after completing the quiz for each category.
  • Can only see answers after completing the quiz.
  • Show/Hide button option for answers. Link to PRO Version to see all answers for each category
  • Ability to navigate through questions for each category using next and previous button.
  • Resource info page about the answer for each category and Top 60 Tips to succeed in the exam.
  • Prominent Cloud Evangelist latest tweets and Technology Latest News Feed
  • The app helps you study and practice from your mobile device with an intuitive interface.
  • SAA-C01 and SAA-C02 compatible
  • Resource info page about the answer for each category.
  • Helps you study and practice from your mobile device with an intuitive interface.

The questions and Answers are divided in 4 categories:

  • Design High Performing Architectures,
  • Design Cost Optimized Architectures,
  • Design Secure Applications And Architectures,
  • Design Resilient Architecture,

The questions and answers cover the following topics: AWS VPC, S3, DynamoDB, EC2, ECS, Lambda, API Gateway, CloudWatch, CloudTrail, Code Pipeline, Code Deploy, TCO Calculator, AWS S3, AWS DynamoDB, CloudWatch , AWS SES, Amazon Lex, AWS EBS, AWS ELB, AWS Autoscaling , RDS, Aurora, Route 53, Amazon CodeGuru, Amazon Bracket, AWS Billing and Pricing, AWS Simply Monthly Calculator, AWS cost calculator, Ec2 pricing on-demand, AWS Pricing, AWS Pay As You Go, AWS No Upfront Cost, Cost Explorer, AWS Organizations, Consolidated billing, Instance Scheduler, on-demand instances, Reserved instances, Spot Instances, CloudFront, Web hosting on S3, S3 storage classes, AWS Regions, AWS Availability Zones, Trusted Advisor, Various architectural Questions and Answers about AWS, AWS SDK, AWS EBS Volumes, EC2, S3, Containers, KMS, AWS read replicas, Cloudfront, API Gateway, AWS Snapshots, Auto shutdown Ec2 instances, High Availability, RDS, DynamoDB, Elasticity, AWS Virtual Machines, AWS Caching, AWS Containers, AWS Architecture, AWS Ec2, AWS S3, AWS Security, AWS Lambda, Bastion Hosts, S3 lifecycle policy, kinesis sharing, AWS KMS, Design High Performing Architectures, Design Cost Optimized Architectures, Design Secure Applications And Architectures, Design Resilient Architecture, AWS vs Azure vs Google Cloud, Resources, Questions, AWS, AWS SDK, AWS EBS Volumes, AWS read replicas, Cloudfront, API Gateway, AWS Snapshots, Auto shutdown Ec2 instances, High Availability, RDS, DynamoDB, Elasticity, AWS Virtual Machines, AWS Caching, AWS Containers, AWS Architecture, AWS Ec2, AWS S3, AWS Security, AWS Lambda, Load Balancing, DynamoDB, EBS, Multi-AZ RDS, Aurora, EFS, DynamoDB, NLB, ALB, Aurora, Auto Scaling, DynamoDB(latency), Aurora(performance), Multi-AZ RDS(high availability), Throughput Optimized EBS (highly sequential), SAA-CO1, SAA-CO2, Cloudwatch, CloudTrail, KMS, ElasticBeanstalk, OpsWorks, RPO vs RTO, HA vs FT, Undifferentiated Heavy Lifting, Access Management Basics, Shared Responsibility Model, Cloud Service Models, etc…

The resources sections cover the following areas: Certification, AWS training, Mock Exam Preparation Tips, Cloud Architect Training, Cloud Architect Knowledge, Cloud Technology, cloud certification, cloud exam preparation tips, cloud solution architect associate exam, certification practice exam, learn aws free, amazon cloud solution architect, question dumps, acloud guru links, tutorial dojo links, linuxacademy links, latest aws certification tweets, and post from reddit, quota, linkedin, medium, cloud exam preparation tips, aws cloud solution architect associate exam, aws certification practice exam, cloud exam questions, learn aws free, amazon cloud solution architect, amazon cloud certified solution architect associate exam questions, as certification dumps, google cloud, azure cloud, acloud, learn google cloud, learn azure cloud, cloud comparison, etc.

Abilities Validated by the Certification:

  • Effectively demonstrate knowledge of how to architect and deploy secure and robust applications on AWS technologies
  • Define a solution using architectural design principles based on customer requirements
  • Provide implementation guidance based on best practices to the organization throughout the life cycle of the project

Recommended Knowledge for the Certification:

  • One year of hands-on experience designing available, cost-effective, fault-tolerant, and scalable distributed systems on AWS.
  • Hands-on experience using compute, networking, storage, and database AWS services.
  • Hands-on experience with AWS deployment and management services.
  • Ability to identify and define technical requirements for an AWS-based application.
  • bility to identify which AWS services meet a given technical requirement.
  • Knowledge of recommended best practices for building secure and reliable applications on the AWS platform.
  • An understanding of the basic architectural principles of building in the AWS Cloud.
  • An understanding of the AWS global infrastructure.
  • An understanding of network technologies as they relate to AWS.
  • An understanding of security features and tools that AWS provides and how they relate to traditional services.

Note and disclaimer: We are not affiliated with AWS or Amazon or Microsoft or Google. The questions are put together based on the certification study guide and materials available online. We also receive questions and answers from anonymous users and we vet to make sure they are legitimate. The questions in this app should help you pass the exam but it is not guaranteed. We are not responsible for any exam you did not pass.

Important: To succeed with the real exam, do not memorize the answers in this app. It is very important that you understand why a question is right or wrong and the concepts behind it by carefully reading the reference documents in the answers.

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What is the AWS Certified Solution Architect Associate Exam?

This exam validates an examinee’s ability to effectively demonstrate knowledge of how to architect and deploy secure and robust applications on AWS technologies. It validates an examinee’s ability to:

  • Define a solution using architectural design principles based on customer requirements.
  • Multiple-response: Has two correct responses out of five options.

There are two types of questions on the examination:

  • Multiple-choice: Has one correct response and three incorrect responses (distractors).
  • Provide implementation guidance based on best practices to the organization throughout the lifecycle of the project.

Select one or more responses that best complete the statement or answer the question. Distractors, or incorrect answers, are response options that an examinee with incomplete knowledge or skill would likely choose. However, they are generally plausible responses that fit in the content area defined by the test objective. Unanswered questions are scored as incorrect; there is no penalty for guessing.

To succeed with the real exam, do not memorize the answers below. It is very important that you understand why a question is right or wrong and the concepts behind it by carefully reading the reference documents in the answers.

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AWS Certified Solution Architect Associate info and details

The AWS Certified Solution Architect Associate Exam is a multiple choice, multiple answer exam. Here is the Exam Overview:

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Other AWS Facts and Summaries and Questions/Answers Dump

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Additional Information for reference

Below are some useful reference links that would help you to learn about AWS Practitioner Exam.

Other Relevant and Recommended AWS Certifications

AWS Certification Exams Roadmap AWS Certification Exams Roadmap[/caption]

AWS Solution Architect Associate Exam Whitepapers:

AWS has provided whitepapers to help you understand the technical concepts. Below are the recommended whitepapers.

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Online Training and Labs for AWS Certified Solution Architect Associate Exam

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AWS Certified Solution Architect Associate Jobs

AWS Certification and Training Apps for all platforms:

AWS Cloud practitioner FREE version:

AWS Certified Cloud practitioner for the web:pwa

AWS Certified Cloud practitioner Exam Prep App for iOS

AWS Certified Cloud practitioner Exam Prep App for Microsoft/Windows10

AWS Certified Cloud practitioner Exam Prep App for Android (Google Play Store)

AWS Certified Cloud practitioner Exam Prep App for Android (Amazon App Store)

AWS Certified Cloud practitioner Exam Prep App for Android (Huawei App Gallery)

AWS Solution Architect FREE version:

AWS Certified Solution Architect Associate Exam Prep App for iOS: https://apps.apple.com/ca/app/solution-architect-assoc-quiz/id1501225766

Solution Architect Associate for Android Google Play

AWS Certified Solution Architect Associate Exam Prep App for the eb: Pwa

AWS Certified Solution Architect Associate Exam Prep App for Amazon android

‪‬

AWS Certified Cloud practitioner Exam Prep App for Microsoft/Windows10

AWS Certified Cloud practitioner Exam Prep App for Huawei App Gallery

AWS Cloud Practitioner PRO Versions:

AWS Certified Cloud practitioner PRO Exam Prep App for iOS

AWS Certified Cloud Practitioner PRO Associate Exam Prep App for android google

AWS Certified Cloud practitioner Exam Prep App for Amazon android

AWS Certified Cloud practitioner Exam Prep App for Windows 10

AWS Certified Cloud practitioner Exam Prep PRO App for Android (Huawei App Gallery) Coming soon

AWS Solution Architect PRO

AWS Certified Solution Architect Associate PRO versions for iOS

AWS Certified Solution Architect Associate PRO Exam Prep App for Android google

AWS Certified Solution Architect Associate PRO Exam Prep App for Windows10

AWS Certified Solution Architect Associate PRO Exam Prep App for Amazon android

Huawei App Gallery: Coming soon

AWS Certified Developer Associates Free version:

AWS Certified Developer Associates for Android (Google Play)

AWS Certified Developer Associates Web/PWA

AWS Certified Developer Associates for iOs

AWS Certified Developer Associates for Android (Huawei App Gallery)

AWS Certified Developer Associates for windows 10 (Microsoft App store)

Amazon App Store: Coming soon

AWS Developer Associates PRO version

PRO version with mock exam for android (Google Play)

PRO version with mock exam ios

AWS Certified Developer Associates PRO for Android (Amazon App Store): Coming Soon

AWS Certified Developer Associates PRO for Android (Huawei App Gallery): Coming soon

AWS certification exam quiz apps for all platforms

AWS certification Quiz App for all platforms

Below is a listing of AWS certification exam quiz apps for all platforms:

AWS Certified Cloud practitioner Exam Prep FREE version: CCP, CLF-C01

IOS: https://apps.apple.com/ca/app/aws-certified-cloud-pract-prep/id1488832117

Microsoft/Windows10:https://www.microsoft.com/en-ca/p/aws-certified-cloud-practitioner-exam-preparation/9ns1xttj1d5s

2022 AWS Cloud Practitioner Exam Preparation

Google play: https://play.google.com/store/apps/details?id=com.awscloudpractitonerexamprep.enoumen

Amazon App Store (Android): https://www.amazon.com/dp/B085MFT53J/ref=mp_s_a_1_2?keywords=cloud+practitioner&qid=1583633225&s=mobile-apps&sr=1-2

Web/PWA: https://aws-cloud-practitioner-exam.firebaseapp.com

Cloud Practitioner PRO Versions:

ios: https://apps.apple.com/ca/app/aws-certified-cloud-pract-pro/id1501104845

android google : https://play.google.com/store/apps/details?id=com.awscloudpractitonerexampreppro.enoumen

Amazon android: https://www.amazon.com/dp/B085HGKRMG/ref=pe_385040_118058080_TE_M1DP

Windows 10: https://www.microsoft.com/en-ca/p/aws-certified-cloud-practitioner-exam-preparation-quiz-pro/9phhz236gh4d


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AWS Certified Solution Architect Associate Exam Prep FREE version: SAA, SAA-C01, SAA-C02

Google: https://play.google.com/store/apps/details?id=com.awssolutionarchitectassociateexamprep.app

iOS: https://apps.apple.com/ca/app/solution-architect-assoc-quiz/id1501225766

Web(All platforms): https://awscertifiedsolutionarchitectexamprep.com/

Amazon android: ‪http://www.amazon.com/dp/B085MG99H9/ref=cm_sw_r_tw_awdm_xs_pqfzEb4HSYJV1

Microsoft/Windows10: https://www.microsoft.com/en-ca/p/aws-certified-solution-architect-associate-exam-prep/9ncch3cgskmp

Solution Architect PRO versions:

Ios: https://apps.apple.com/ca/app/solution-architect-assoc-pro/id1501465417

Android google: https://play.google.com/store/apps/details?id=com.awssolutionarchitectassociateexampreppro.app

Windows10: not available yet

Amazon android: https://www.amazon.com/dp/B085HR898X/ref=pe_385040_118058080_TE_M1DP

AWS Certified Developer Associate Exam Prep: DVA-C01

android: https://play.google.com/store/apps/details?id=com.awscertdevassociateexampreppro.enoumen

iOs: https://apps.apple.com/ca/app/aws-certified-developer-assoc/id1511211095

PRO version with mock exams android: https://play.google.com/store/apps/details?id=com.awscertdevassociateexampreppro.enoumen

PRO version with mock exam ios: https://apps.apple.com/ca/app/aws-certified-dev-ass-dva-c01/id1506519319t

AWS Solution Architect FREE version:

Google Play (Android): https://play.google.com/store/apps/details?id=com.awssolutionarchitectassociateexamprep.app

iOS: https://apps.apple.com/ca/app/solution-architect-assoc-quiz/id1501225766

Pwa: https://awscertifiedsolutionarchitectexamprep.com

Amazon android: http://www.amazon.com/dp/B085MG99H9/ref=cm_sw_r_tw_awdm_xs_pqfzEb4HSYJV1‬

Microsoft/Windows10: https://www.microsoft.com/en-ca/p/aws-certified-solution-architect-associate-exam-prep/9ncch3cgskmp

AWS Cloud Practitioner PRO Versions:

ios: https://apps.apple.com/ca/app/aws-certified-cloud-pract-pro/id1501104845

Android google : https://play.google.com/store/apps/details?id=com.awscloudpractitonerexampreppro.enoumen

Amazon android: https://www.amazon.com/dp/B085HGKRMG/ref=pe_385040_118058080_TE_M1DP

Microsoft/Windows 10: https://www.microsoft.com/en-ca/p/aws-certified-cloud-practitioner-exam-preparation-quiz-pro/9phhz236gh4d

AWS Solution Architect PRO versions:

Ios: https://apps.apple.com/ca/app/solution-architect-assoc-pro/id1501465417

Android google: https://play.google.com/store/apps/details?id=com.awssolutionarchitectassociateexampreppro.app

Windows10: not available yet

Amazon android: https://www.amazon.com/dp/B085HR898X/ref=pe_385040_118058080_TE_M1DP

2022 AWS Certified Developer Associate Exam Preparation: Questions and Answers Dump

Welcome to AWS Certified Developer Associate Exam Preparation: Definition and Objectives, Top 100 Questions and Answers dump, White papers, Courses, Labs and Training Materials, Exam info and details, References, Jobs, Others AWS Certificates

AWS Developer Associate DVA-C01 Exam Prep
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What is the AWS Certified Developer Associate Exam?

This AWS Certified Developer-Associate Examination is intended for individuals who perform a Developer role. It validates an examinee’s ability to:

  • Demonstrate an understanding of core AWS services, uses, and basic AWS architecture best practices
  • Demonstrate proficiency in developing, deploying, and debugging cloud-based applications by using AWS

Recommended general IT knowledge
The target candidate should have the following:
– In-depth knowledge of at least one high-level programming language
– Understanding of application lifecycle management
– The ability to write code for serverless applications
– Understanding of the use of containers in the development process

Recommended AWS knowledge
The target candidate should be able to do the following:

2022 AWS Cloud Practitioner Exam Preparation
  • Use the AWS service APIs, CLI, and software development kits (SDKs) to write applications
  • Identify key features of AWS services
  • Understand the AWS shared responsibility model
  • Use a continuous integration and continuous delivery (CI/CD) pipeline to deploy applications on AWS
  • Use and interact with AWS services
  • Apply basic understanding of cloud-native applications to write code
  • Write code by using AWS security best practices (for example, use IAM roles instead of secret and access keys in the code)
  • Author, maintain, and debug code modules on AWS

What is considered out of scope for the target candidate?
The following is a non-exhaustive list of related job tasks that the target candidate is not expected to be able to perform. These items are considered out of scope for the exam:
– Design architectures (for example, distributed system, microservices)
– Design and implement CI/CD pipelines

  • Administer IAM users and groups
  • Administer Amazon Elastic Container Service (Amazon ECS)
  • Design AWS networking infrastructure (for example, Amazon VPC, AWS Direct Connect)
  • Understand compliance and licensing

Exam content
Response types
There are two types of questions on the exam:
– Multiple choice: Has one correct response and three incorrect responses (distractors)
– Multiple response: Has two or more correct responses out of five or more response options
Select one or more responses that best complete the statement or answer the question. Distractors, or incorrect answers, are response options that a candidate with incomplete knowledge or skill might choose.
Distractors are generally plausible responses that match the content area.
Unanswered questions are scored as incorrect; there is no penalty for guessing. The exam includes 50 questions that will affect your score.

Unscored content
The exam includes 15 unscored questions that do not affect your score. AWS collects information about candidate performance on these unscored questions to evaluate these questions for future use as scored questions. These unscored questions are not identified on the exam.

Exam results
The AWS Certified Developer – Associate (DVA-C01) exam is a pass or fail exam. The exam is scored against a minimum standard established by AWS professionals who follow certification industry best practices and guidelines.
Your results for the exam are reported as a scaled score of 100–1,000. The minimum passing score is 720.
Your score shows how you performed on the exam as a whole and whether you passed. Scaled scoring models help equate scores across multiple exam forms that might have slightly different difficulty levels.
Your score report could contain a table of classifications of your performance at each section level. This information is intended to provide general feedback about your exam performance. The exam uses a compensatory scoring model, which means that you do not need to achieve a passing score in each section. You need to pass only the overall exam.
Each section of the exam has a specific weighting, so some sections have more questions than other sections have. The table contains general information that highlights your strengths and weaknesses. Use caution when interpreting section-level feedback.

Content outline
This exam guide includes weightings, test domains, and objectives for the exam. It is not a comprehensive listing of the content on the exam. However, additional context for each of the objectives is available to help guide your preparation for the exam. The following table lists the main content domains and their weightings. The table precedes the complete exam content outline, which includes the additional context.
The percentage in each domain represents only scored content.

Domain 1: Deployment 22%
Domain 2: Security 26%
Domain 3: Development with AWS Services 30%
Domain 4: Refactoring 10%
Domain 5: Monitoring and Troubleshooting 12%

Domain 1: Deployment
1.1 Deploy written code in AWS using existing CI/CD pipelines, processes, and patterns.
–  Commit code to a repository and invoke build, test and/or deployment actions
–  Use labels and branches for version and release management
–  Use AWS CodePipeline to orchestrate workflows against different environments
–  Apply AWS CodeCommit, AWS CodeBuild, AWS CodePipeline, AWS CodeStar, and AWS
CodeDeploy for CI/CD purposes
–  Perform a roll back plan based on application deployment policy

1.2 Deploy applications using AWS Elastic Beanstalk.
–  Utilize existing supported environments to define a new application stack
–  Package the application
–  Introduce a new application version into the Elastic Beanstalk environment
–  Utilize a deployment policy to deploy an application version (i.e., all at once, rolling, rolling with batch, immutable)
–  Validate application health using Elastic Beanstalk dashboard
–  Use Amazon CloudWatch Logs to instrument application logging


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1.3 Prepare the application deployment package to be deployed to AWS.
–  Manage the dependencies of the code module (like environment variables, config files and static image files) within the package
–  Outline the package/container directory structure and organize files appropriately
–  Translate application resource requirements to AWS infrastructure parameters (e.g., memory, cores)

1.4 Deploy serverless applications.
–  Given a use case, implement and launch an AWS Serverless Application Model (AWS SAM) template
–  Manage environments in individual AWS services (e.g., Differentiate between Development, Test, and Production in Amazon API Gateway)

Domain 2: Security
2.1 Make authenticated calls to AWS services.
–  Communicate required policy based on least privileges required by application.
–  Assume an IAM role to access a service
–  Use the software development kit (SDK) credential provider on-premises or in the cloud to access AWS services (local credentials vs. instance roles)

2.2 Implement encryption using AWS services.
– Encrypt data at rest (client side; server side; envelope encryption) using AWS services
–  Encrypt data in transit

2.3 Implement application authentication and authorization.
– Add user sign-up and sign-in functionality for applications with Amazon Cognito identity or user pools
–  Use Amazon Cognito-provided credentials to write code that access AWS services.
–  Use Amazon Cognito sync to synchronize user profiles and data
–  Use developer-authenticated identities to interact between end user devices, backend
authentication, and Amazon Cognito

Domain 3: Development with AWS Services
3.1 Write code for serverless applications.
– Compare and contrast server-based vs. serverless model (e.g., micro services, stateless nature of serverless applications, scaling serverless applications, and decoupling layers of serverless applications)
– Configure AWS Lambda functions by defining environment variables and parameters (e.g., memory, time out, runtime, handler)
– Create an API endpoint using Amazon API Gateway
–  Create and test appropriate API actions like GET, POST using the API endpoint
–  Apply Amazon DynamoDB concepts (e.g., tables, items, and attributes)
–  Compute read/write capacity units for Amazon DynamoDB based on application requirements
–  Associate an AWS Lambda function with an AWS event source (e.g., Amazon API Gateway, Amazon CloudWatch event, Amazon S3 events, Amazon Kinesis)
–  Invoke an AWS Lambda function synchronously and asynchronously

3.2 Translate functional requirements into application design.
– Determine real-time vs. batch processing for a given use case
– Determine use of synchronous vs. asynchronous for a given use case
– Determine use of event vs. schedule/poll for a given use case
– Account for tradeoffs for consistency models in an application design

Domain 4: Refactoring
4.1 Optimize applications to best use AWS services and features.
 Implement AWS caching services to optimize performance (e.g., Amazon ElastiCache, Amazon API Gateway cache)
 Apply an Amazon S3 naming scheme for optimal read performance

4.2 Migrate existing application code to run on AWS.
– Isolate dependencies
– Run the application as one or more stateless processes
– Develop in order to enable horizontal scalability
– Externalize state

Domain 5: Monitoring and Troubleshooting

5.1 Write code that can be monitored.
– Create custom Amazon CloudWatch metrics
– Perform logging in a manner available to systems operators
– Instrument application source code to enable tracing in AWS X-Ray

5.2 Perform root cause analysis on faults found in testing or production.
– Interpret the outputs from the logging mechanism in AWS to identify errors in logs
– Check build and testing history in AWS services (e.g., AWS CodeBuild, AWS CodeDeploy, AWS CodePipeline) to identify issues
– Utilize AWS services (e.g., Amazon CloudWatch, VPC Flow Logs, and AWS X-Ray) to locate a specific faulty component

Which key tools, technologies, and concepts might be covered on the exam?

The following is a non-exhaustive list of the tools and technologies that could appear on the exam.
This list is subject to change and is provided to help you understand the general scope of services, features, or technologies on the exam.
The general tools and technologies in this list appear in no particular order.
AWS services are grouped according to their primary functions. While some of these technologies will likely be covered more than others on the exam, the order and placement of them in this list is no indication of relative weight or importance:
– Analytics
– Application Integration
– Containers
– Cost and Capacity Management
– Data Movement
– Developer Tools
– Instances (virtual machines)
– Management and Governance
– Networking and Content Delivery
– Security
– Serverless

AWS services and features

Analytics:
– Amazon Elasticsearch Service (Amazon ES)
– Amazon Kinesis
Application Integration:
– Amazon EventBridge (Amazon CloudWatch Events)
– Amazon Simple Notification Service (Amazon SNS)
– Amazon Simple Queue Service (Amazon SQS)
– AWS Step Functions

Compute:
– Amazon EC2
– AWS Elastic Beanstalk
– AWS Lambda

Containers:
– Amazon Elastic Container Registry (Amazon ECR)
– Amazon Elastic Container Service (Amazon ECS)
– Amazon Elastic Kubernetes Services (Amazon EKS)

Database:
– Amazon DynamoDB
– Amazon ElastiCache
– Amazon RDS

Developer Tools:
– AWS CodeArtifact
– AWS CodeBuild
– AWS CodeCommit
– AWS CodeDeploy
– Amazon CodeGuru
– AWS CodePipeline
– AWS CodeStar
– AWS Fault Injection Simulator
– AWS X-Ray

Management and Governance:
– AWS CloudFormation
– Amazon CloudWatch

Networking and Content Delivery:
– Amazon API Gateway
– Amazon CloudFront
– Elastic Load Balancing

Security, Identity, and Compliance:
– Amazon Cognito
– AWS Identity and Access Management (IAM)
– AWS Key Management Service (AWS KMS)

Storage:
– Amazon S3

Out-of-scope AWS services and features

The following is a non-exhaustive list of AWS services and features that are not covered on the exam.
These services and features do not represent every AWS offering that is excluded from the exam content.
Services or features that are entirely unrelated to the target job roles for the exam are excluded from this list because they are assumed to be irrelevant.
Out-of-scope AWS services and features include the following:
– AWS Application Discovery Service
– Amazon AppStream 2.0
– Amazon Chime
– Amazon Connect
– AWS Database Migration Service (AWS DMS)
– AWS Device Farm
– Amazon Elastic Transcoder
– Amazon GameLift
– Amazon Lex
– Amazon Machine Learning (Amazon ML)
– AWS Managed Services
– Amazon Mobile Analytics
– Amazon Polly

– Amazon QuickSight
– Amazon Rekognition
– AWS Server Migration Service (AWS SMS)
– AWS Service Catalog
– AWS Shield Advanced
– AWS Shield Standard
– AWS Snow Family
– AWS Storage Gateway
– AWS WAF
– Amazon WorkMail
– Amazon WorkSpaces

To succeed with the real exam, do not memorize the answers below. It is very important that you understand why a question is right or wrong and the concepts behind it by carefully reading the reference documents in the answers.

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AWS Certified Developer – Associate Practice Questions And Answers Dump

Q0: Your application reads commands from an SQS queue and sends them to web services hosted by your
partners. When a partner’s endpoint goes down, your application continually returns their commands to the queue. The repeated attempts to deliver these commands use up resources. Commands that can’t be delivered must not be lost.
How can you accommodate the partners’ broken web services without wasting your resources?

  • A. Create a delay queue and set DelaySeconds to 30 seconds
  • B. Requeue the message with a VisibilityTimeout of 30 seconds.
  • C. Create a dead letter queue and set the Maximum Receives to 3.
  • D. Requeue the message with a DelaySeconds of 30 seconds.
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C. After a message is taken from the queue and returned for the maximum number of retries, it is
automatically sent to a dead letter queue, if one has been configured. It stays there until you retrieve it for forensic purposes.

Reference: Amazon SQS Dead-Letter Queues


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Q1: A developer is writing an application that will store data in a DynamoDB table. The ratio of reads operations to write operations will be 1000 to 1, with the same data being accessed frequently.
What should the Developer enable on the DynamoDB table to optimize performance and minimize costs?

  • A. Amazon DynamoDB auto scaling
  • B. Amazon DynamoDB cross-region replication
  • C. Amazon DynamoDB Streams
  • D. Amazon DynamoDB Accelerator


D. The AWS Documentation mentions the following:

DAX is a DynamoDB-compatible caching service that enables you to benefit from fast in-memory performance for demanding applications. DAX addresses three core scenarios

  1. As an in-memory cache, DAX reduces the response times of eventually-consistent read workloads by an order of magnitude, from single-digit milliseconds to microseconds.
  2. DAX reduces operational and application complexity by providing a managed service that is API-compatible with Amazon DynamoDB, and thus requires only minimal functional changes to use with an existing application.
  3. For read-heavy or bursty workloads, DAX provides increased throughput and potential operational cost savings by reducing the need to over-provision read capacity units. This is especially beneficial for applications that require repeated reads for individual keys.

Reference: AWS DAX


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Q2: You are creating a DynamoDB table with the following attributes:

  • PurchaseOrderNumber (partition key)
  • CustomerID
  • PurchaseDate
  • TotalPurchaseValue

One of your applications must retrieve items from the table to calculate the total value of purchases for a
particular customer over a date range. What secondary index do you need to add to the table?

  • A. Local secondary index with a partition key of CustomerID and sort key of PurchaseDate; project the
    TotalPurchaseValue attribute
  • B. Local secondary index with a partition key of PurchaseDate and sort key of CustomerID; project the
    TotalPurchaseValue attribute
  • C. Global secondary index with a partition key of CustomerID and sort key of PurchaseDate; project the
    TotalPurchaseValue attribute
  • D. Global secondary index with a partition key of PurchaseDate and sort key of CustomerID; project the
    TotalPurchaseValue attribute


C. The query is for a particular CustomerID, so a Global Secondary Index is needed for a different partition
key. To retrieve only the desired date range, the PurchaseDate must be the sort key. Projecting the
TotalPurchaseValue into the index provides all the data needed to satisfy the use case.

Reference: AWS DynamoDB Global Secondary Indexes

Difference between local and global indexes in DynamoDB

    • Global secondary index — an index with a hash and range key that can be different from those on the table. A global secondary index is considered “global” because queries on the index can span all of the data in a table, across all partitions.
    • Local secondary index — an index that has the same hash key as the table, but a different range key. A local secondary index is “local” in the sense that every partition of a local secondary index is scoped to a table partition that has the same hash key.
    • Local Secondary Indexes still rely on the original Hash Key. When you supply a table with hash+range, think about the LSI as hash+range1, hash+range2.. hash+range6. You get 5 more range attributes to query on. Also, there is only one provisioned throughput.
    • Global Secondary Indexes defines a new paradigm – different hash/range keys per index.
      This breaks the original usage of one hash key per table. This is also why when defining GSI you are required to add a provisioned throughput per index and pay for it.
    • Local Secondary Indexes can only be created when you are creating the table, there is no way to add Local Secondary Index to an existing table, also once you create the index you cannot delete it.
    • Global Secondary Indexes can be created when you create the table and added to an existing table, deleting an existing Global Secondary Index is also allowed.

Throughput :

  • Local Secondary Indexes consume throughput from the table. When you query records via the local index, the operation consumes read capacity units from the table. When you perform a write operation (create, update, delete) in a table that has a local index, there will be two write operations, one for the table another for the index. Both operations will consume write capacity units from the table.
  • Global Secondary Indexes have their own provisioned throughput, when you query the index the operation will consume read capacity from the index, when you perform a write operation (create, update, delete) in a table that has a global index, there will be two write operations, one for the table another for the index*.


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The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

AWS Developer Associate DVA-C01 Exam Prep
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Q3: When referencing the remaining time left for a Lambda function to run within the function’s code you would use:

  • A. The event object
  • B. The timeLeft object
  • C. The remains object
  • D. The context object


D. The context object.

Reference: AWS Lambda


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Q4: What two arguments does a Python Lambda handler function require?

  • A. invocation, zone
  • B. event, zone
  • C. invocation, context
  • D. event, context
D. event, context
def handler_name(event, context):

return some_value

Reference: AWS Lambda Function Handler in Python

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Q5: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only via SFTP
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere

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D. From a zip file in AWS S3 or uploaded directly from elsewhere

Reference: AWS Lambda Deployment Package

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Q6: A Lambda deployment package contains:

  • A. Function code, libraries, and runtime binaries
  • B. Only function code
  • C. Function code and libraries not included within the runtime
  • D. Only libraries not included within the runtime

C. Function code and libraries not included within the runtime

Reference: AWS Lambda Deployment Package in PowerShell

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Q7: You are attempting to SSH into an EC2 instance that is located in a public subnet. However, you are currently receiving a timeout error trying to connect. What could be a possible cause of this connection issue?

  • A. The security group associated with the EC2 instance has an inbound rule that allows SSH traffic, but does not have an outbound rule that allows SSH traffic.
  • B. The security group associated with the EC2 instance has an inbound rule that allows SSH traffic AND has an outbound rule that explicitly denies SSH traffic.
  • C. The security group associated with the EC2 instance has an inbound rule that allows SSH traffic AND the associated NACL has both an inbound and outbound rule that allows SSH traffic.
  • D. The security group associated with the EC2 instance does not have an inbound rule that allows SSH traffic AND the associated NACL does not have an outbound rule that allows SSH traffic.


D. Security groups are stateful, so you do NOT have to have an explicit outbound rule for return requests. However, NACLs are stateless so you MUST have an explicit outbound rule configured for return request.

Reference: Comparison of Security Groups and Network ACLs

AWS Security Groups and NACL


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Q8: You have instances inside private subnets and a properly configured bastion host instance in a public subnet. None of the instances in the private subnets have a public or Elastic IP address. How can you connect an instance in the private subnet to the open internet to download system updates?

  • A. Create and assign EIP to each instance
  • B. Create and attach a second IGW to the VPC.
  • C. Create and utilize a NAT Gateway
  • D. Connect to a VPN


C. You can use a network address translation (NAT) gateway in a public subnet in your VPC to enable instances in the private subnet to initiate outbound traffic to the Internet, but prevent the instances from receiving inbound traffic initiated by someone on the Internet.

Reference: AWS Network Address Translation Gateway


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Q9: What feature of VPC networking should you utilize if you want to create “elasticity” in your application’s architecture?

  • A. Security Groups
  • B. Route Tables
  • C. Elastic Load Balancer
  • D. Auto Scaling


D. Auto scaling is designed specifically with elasticity in mind. Auto scaling allows for the increase and decrease of compute power based on demand, thus creating elasticity in the architecture.

Reference: AWS Autoscalling


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Q10: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only from a directly uploaded zip file
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere

D. From a zip file in AWS S3 or uploaded directly from elsewhere

Reference: AWS Lambda

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Q11: You’re writing a script with an AWS SDK that uses the AWS API Actions and want to create AMIs for non-EBS backed AMIs for you. Which API call should occurs in the final process of creating an AMI?

  • A. RegisterImage
  • B. CreateImage
  • C. ami-register-image
  • D. ami-create-image

A. It is actually – RegisterImage. All AWS API Actions will follow the capitalization like this and don’t have hyphens in them.

Reference: API RegisterImage

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Q12: When dealing with session state in EC2-based applications using Elastic load balancers which option is generally thought of as the best practice for managing user sessions?

  • A. Having the ELB distribute traffic to all EC2 instances and then having the instance check a caching solution like ElastiCache running Redis or Memcached for session information
  • B. Permenantly assigning users to specific instances and always routing their traffic to those instances
  • C. Using Application-generated cookies to tie a user session to a particular instance for the cookie duration
  • D. Using Elastic Load Balancer generated cookies to tie a user session to a particular instance

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Q13: Which API call would best be used to describe an Amazon Machine Image?

  • A. ami-describe-image
  • B. ami-describe-images
  • C. DescribeImage
  • D. DescribeImages

D. In general, API actions stick to the PascalCase style with the first letter of every word capitalized.

Reference: API DescribeImages

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Q14: What is one key difference between an Amazon EBS-backed and an instance-store backed instance?

  • A. Autoscaling requires using Amazon EBS-backed instances
  • B. Virtual Private Cloud requires EBS backed instances
  • C. Amazon EBS-backed instances can be stopped and restarted without losing data
  • D. Instance-store backed instances can be stopped and restarted without losing data

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C. Instance-store backed images use “ephemeral” storage (temporary). The storage is only available during the life of an instance. Rebooting an instance will allow ephemeral data stay persistent. However, stopping and starting an instance will remove all ephemeral storage.

Reference: What is the difference between EBS and Instance Store?

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Q15: After having created a new Linux instance on Amazon EC2, and downloaded the .pem file (called Toto.pem) you try and SSH into your IP address (54.1.132.33) using the following command.
ssh -i my_key.pem ec2-user@52.2.222.22
However you receive the following error.
@@@@@@@@ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@
What is the most probable reason for this and how can you fix it?

  • A. You do not have root access on your terminal and need to use the sudo option for this to work.
  • B. You do not have enough permissions to perform the operation.
  • C. Your key file is encrypted. You need to use the -u option for unencrypted not the -i option.
  • D. Your key file must not be publicly viewable for SSH to work. You need to modify your .pem file to limit permissions.

D. You need to run something like: chmod 400 my_key.pem

Reference:

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Q16: You have an EBS root device on /dev/sda1 on one of your EC2 instances. You are having trouble with this particular instance and you need to either Stop/Start, Reboot or Terminate the instance but you do NOT want to lose any data that you have stored on /dev/sda1. However, you are unsure if changing the instance state in any of the aforementioned ways will cause you to lose data stored on the EBS volume. Which of the below statements best describes the effect each change of instance state would have on the data you have stored on /dev/sda1?

  • A. Whether you stop/start, reboot or terminate the instance it does not matter because data on an EBS volume is not ephemeral and the data will not be lost regardless of what method is used.
  • B. If you stop/start the instance the data will not be lost. However if you either terminate or reboot the instance the data will be lost.
  • C. Whether you stop/start, reboot or terminate the instance it does not matter because data on an EBS volume is ephemeral and it will be lost no matter what method is used.
  • D. The data will be lost if you terminate the instance, however the data will remain on /dev/sda1 if you reboot or stop/start the instance because data on an EBS volume is not ephemeral.

D. The question states that an EBS-backed root device is mounted at /dev/sda1, and EBS volumes maintain information regardless of the instance state. If it was instance store, this would be a different answer.

Reference: AWS Root Device Storage

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Q17: EC2 instances are launched from Amazon Machine Images (AMIs). A given public AMI:

  • A. Can only be used to launch EC2 instances in the same AWS availability zone as the AMI is stored
  • B. Can only be used to launch EC2 instances in the same country as the AMI is stored
  • C. Can only be used to launch EC2 instances in the same AWS region as the AMI is stored
  • D. Can be used to launch EC2 instances in any AWS region

C. AMIs are only available in the region they are created. Even in the case of the AWS-provided AMIs, AWS has actually copied the AMIs for you to different regions. You cannot access an AMI from one region in another region. However, you can copy an AMI from one region to another

Reference: https://aws.amazon.com/amazon-linux-ami/

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Q18: Which of the following statements is true about the Elastic File System (EFS)?

  • A. EFS can scale out to meet capacity requirements and scale back down when no longer needed
  • B. EFS can be used by multiple EC2 instances simultaneously
  • C. EFS cannot be used by an instance using EBS
  • D. EFS can be configured on an instance before launch just like an IAM role or EBS volumes

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A. and B.

Reference: https://aws.amazon.com/efs/

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Q19: IAM Policies, at a minimum, contain what elements?

  • A. ID
  • B. Effects
  • C. Resources
  • D. Sid
  • E. Principle
  • F. Actions

B. C. and F.

Effect – Use Allow or Deny to indicate whether the policy allows or denies access.

Resource – Specify a list of resources to which the actions apply.

Action – Include a list of actions that the policy allows or denies.

Id, Sid aren’t required fields in IAM Policies. But they are optional fields

Reference: AWS IAM Access Policies

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Q20: What are the main benefits of IAM groups?

  • A. The ability to create custom permission policies.
  • B. Assigning IAM permission policies to more than one user at a time.
  • C. Easier user/policy management.
  • D. Allowing EC2 instances to gain access to S3.

B. and C.

A. is incorrect: This is a benefit of IAM generally or a benefit of IAM policies. But IAM groups don’t create policies, they have policies attached to them.

Reference: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_groups.html

 

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Q21: What are benefits of using AWS STS?

  • A. Grant access to AWS resources without having to create an IAM identity for them
  • B. Since credentials are temporary, you don’t have to rotate or revoke them
  • C. Temporary security credentials can be extended indefinitely
  • D. Temporary security credentials can be restricted to a specific region

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Q22: What should the Developer enable on the DynamoDB table to optimize performance and minimize costs?

  • A. Amazon DynamoDB auto scaling
  • B. Amazon DynamoDB cross-region replication
  • C. Amazon DynamoDB Streams
  • D. Amazon DynamoDB Accelerator


D. DAX is a DynamoDB-compatible caching service that enables you to benefit from fast in-memory performance for demanding applications. DAX addresses three core scenarios:

  1. As an in-memory cache, DAX reduces the response times of eventually-consistent read workloads by an order of magnitude, from single-digit milliseconds to microseconds.
  2. DAX reduces operational and application complexity by providing a managed service that is API-compatible with Amazon DynamoDB, and thus requires only minimal functional changes to use with an existing application.
  3. For read-heavy or bursty workloads, DAX provides increased throughput and potential operational cost savings by reducing the need to over-provision read capacity units. This is especially beneficial for applications that require repeated reads for individual keys.

Reference: AWS DAX


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Q23: A Developer has been asked to create an AWS Elastic Beanstalk environment for a production web application which needs to handle thousands of requests. Currently the dev environment is running on a t1 micro instance. How can the Developer change the EC2 instance type to m4.large?

  • A. Use CloudFormation to migrate the Amazon EC2 instance type of the environment from t1 micro to m4.large.
  • B. Create a saved configuration file in Amazon S3 with the instance type as m4.large and use the same during environment creation.
  • C. Change the instance type to m4.large in the configuration details page of the Create New Environment page.
  • D. Change the instance type value for the environment to m4.large by using update autoscaling group CLI command.

B. The Elastic Beanstalk console and EB CLI set configuration options when you create an environment. You can also set configuration options in saved configurations and configuration files. If the same option is set in multiple locations, the value used is determined by the order of precedence.
Configuration option settings can be composed in text format and saved prior to environment creation, applied during environment creation using any supported client, and added, modified or removed after environment creation.
During environment creation, configuration options are applied from multiple sources with the following precedence, from highest to lowest:

  • Settings applied directly to the environment – Settings specified during a create environment or update environment operation on the Elastic Beanstalk API by any client, including the AWS Management Console, EB CLI, AWS CLI, and SDKs. The AWS Management Console and EB CLI also applyrecommended values for some options that apply at this level unless overridden.
  • Saved Configurations
    Settings for any options that are not applied directly to the
    environment are loaded from a saved configuration, if specified.
  • Configuration Files (.ebextensions)– Settings for any options that are not applied directly to the
    environment, and also not specified in a saved configuration, are loaded from configuration files in the .ebextensions folder at the root of the application source bundle.

     

    Configuration files are executed in alphabetical order. For example,.ebextensions/01run.configis executed before.ebextensions/02do.config.

  • Default Values– If a configuration option has a default value, it only applies when the option is not set at any of the above levels.

If the same configuration option is defined in more than one location, the setting with the highest precedence is applied. When a setting is applied from a saved configuration or settings applied directly to the environment, the setting is stored as part of the environment’s configuration. These settings can be removed with the AWS CLI or with the EB CLI
.
Settings in configuration files are not applied
directly to the environment and cannot be removed without modifying the configuration files and deploying a new application version.
If a setting applied with one of the other methods is removed, the same setting will be loaded from configuration files in the source bundle.

Reference: Managing ec2 features – Elastic beanstalk

Q24: What statements are true about Availability Zones (AZs) and Regions?

  • A. There is only one AZ in each AWS Region
  • B. AZs are geographically separated inside a region to help protect against natural disasters affecting more than one at a time.
  • C. AZs can be moved between AWS Regions based on your needs
  • D. There are (almost always) two or more AZs in each AWS Region

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B and D.

Reference: AWS global infrastructure/

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Q25: An AWS Region contains:

  • A. Edge Locations
  • B. Data Centers
  • C. AWS Services
  • D. Availability Zones


B. C. D. Edge locations are actually distinct locations that don’t explicitly fall within AWS regions.

Reference: AWS Global Infrastructure


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Q26: Which read request in DynamoDB returns a response with the most up-to-date data, reflecting the updates from all prior write operations that were successful?

  • A. Eventual Consistent Reads
  • B. Conditional reads for Consistency
  • C. Strongly Consistent Reads
  • D. Not possible


C. This is provided very clearly in the AWS documentation as shown below with regards to the read consistency for DynamoDB. Only in Strong Read consistency can you be guaranteed that you get the write read value after all the writes are completed.

Reference: https://aws.amazon.com/dynamodb/faqs/


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Q27: You’ ve been asked to move an existing development environment on the AWS Cloud. This environment consists mainly of Docker based containers. You need to ensure that minimum effort is taken during the migration process. Which of the following step would you consider for this requirement?

  • A. Create an Opswork stack and deploy the Docker containers
  • B. Create an application and Environment for the Docker containers in the Elastic Beanstalk service
  • C. Create an EC2 Instance. Install Docker and deploy the necessary containers.
  • D. Create an EC2 Instance. Install Docker and deploy the necessary containers. Add an Autoscaling Group for scalability of the containers.


B. The Elastic Beanstalk service is the ideal service to quickly provision development environments. You can also create environments which can be used to host Docker based containers.

Reference: Create and Deploy Docker in AWS


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Q28: You’ve written an application that uploads objects onto an S3 bucket. The size of the object varies between 200 – 500 MB. You’ve seen that the application sometimes takes a longer than expected time to upload the object. You want to improve the performance of the application. Which of the following would you consider?

  • A. Create multiple threads and upload the objects in the multiple threads
  • B. Write the items in batches for better performance
  • C. Use the Multipart upload API
  • D. Enable versioning on the Bucket

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C. All other options are invalid since the best way to handle large object uploads to the S3 service is to use the Multipart upload API. The Multipart upload API enables you to upload large objects in parts. You can use this API to upload new large objects or make a copy of an existing object. Multipart uploading is a three-step process: You initiate the upload, you upload the object parts, and after you have uploaded all the parts, you complete the multipart upload. Upon receiving the complete multipart upload request, Amazon S3 constructs the object from the uploaded parts, and you can then access the object just as you would any other object in your bucket.

Reference: https://docs.aws.amazon.com/AmazonS3/latest/dev/mpuoverview.html


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Q29: A security system monitors 600 cameras, saving image metadata every 1 minute to an Amazon DynamoDb table. Each sample involves 1kb of data, and the data writes are evenly distributed over time. How much write throughput is required for the target table?

  • A. 6000
  • B. 10
  • C. 3600
  • D. 600

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B. When you mention the write capacity of a table in Dynamo DB, you mention it as the number of 1KB writes per second. So in the above question, since the write is happening every minute, we need to divide the value of 600 by 60, to get the number of KB writes per second. This gives a value of 10.

You can specify the Write capacity in the Capacity tab of the DynamoDB table.

Reference: AWS working with tables

Q30: What two arguments does a Python Lambda handler function require?

  • A. invocation, zone
  • B. event, zone
  • C. invocation, context
  • D. event, context


D. event, context def handler_name(event, context):

return some_value
Reference: AWS Lambda Function Handler in Python

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Q31: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only via SFTP
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere


D. From a zip file in AWS S3 or uploaded directly from elsewhere
Reference: AWS Lambda Deployment Package

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Q32: A Lambda deployment package contains:

  • A. Function code, libraries, and runtime binaries
  • B. Only function code
  • C. Function code and libraries not included within the runtime
  • D. Only libraries not included within the runtime


C. Function code and libraries not included within the runtime
Reference: AWS Lambda Deployment Package in PowerShell

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Q33: You have instances inside private subnets and a properly configured bastion host instance in a public subnet. None of the instances in the private subnets have a public or Elastic IP address. How can you connect an instance in the private subnet to the open internet to download system updates?

  • A. Create and assign EIP to each instance
  • B. Create and attach a second IGW to the VPC.
  • C. Create and utilize a NAT Gateway
  • D. Connect to a VPN


C. You can use a network address translation (NAT) gateway in a public subnet in your VPC to enable instances in the private subnet to initiate outbound traffic to the Internet, but prevent the instances from receiving inbound traffic initiated by someone on the Internet.
Reference: AWS Network Address Translation Gateway

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Q34: What feature of VPC networking should you utilize if you want to create “elasticity” in your application’s architecture?

  • A. Security Groups
  • B. Route Tables
  • C. Elastic Load Balancer
  • D. Auto Scaling


D. Auto scaling is designed specifically with elasticity in mind. Auto scaling allows for the increase and decrease of compute power based on demand, thus creating elasticity in the architecture.
Reference: AWS Autoscalling

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Q30: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only from a directly uploaded zip file
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere

Answer:


D. From a zip file in AWS S3 or uploaded directly from elsewhere
Reference: AWS Lambda

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Q31: An organization is using an Amazon ElastiCache cluster in front of their Amazon RDS instance. The organization would like the Developer to implement logic into the code so that the cluster only retrieves data from RDS when there is a cache miss. What strategy can the Developer implement to achieve this?

  • A. Lazy loading
  • B. Write-through
  • C. Error retries
  • D. Exponential backoff

Answer:


Answer – A
Whenever your application requests data, it first makes the request to the ElastiCache cache. If the data exists in the cache and is current, ElastiCache returns the data to your application. If the data does not exist in the cache, or the data in the cache has expired, your application requests data from your data store which returns the data to your application. Your application then writes the data received from the store to the cache so it can be more quickly retrieved next time it is requested. All other options are incorrect.
Reference: Caching Strategies

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Q32: A developer is writing an application that will run on Ec2 instances and read messages from SQS queue. The nessages will arrive every 15-60 seconds. How should the Developer efficiently query the queue for new messages?

  • A. Use long polling
  • B. Set a custom visibility timeout
  • C. Use short polling
  • D. Implement exponential backoff


Answer – A Long polling will help insure that the applications make less requests for messages in a shorter period of time. This is more cost effective. Since the messages are only going to be available after 15 seconds and we don’t know exacly when they would be available, it is better to use Long Polling.
Reference: Amazon SQS Long Polling

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Q33: You are using AWS SAM to define a Lambda function and configure CodeDeploy to manage deployment patterns. With new Lambda function working as per expectation which of the following will shift traffic from original Lambda function to new Lambda function in the shortest time frame?

  • A. Canary10Percent5Minutes
  • B. Linear10PercentEvery10Minutes
  • C. Canary10Percent15Minutes
  • D. Linear10PercentEvery1Minute


Answer – A
With Canary Deployment Preference type, Traffic is shifted in two intervals. With Canary10Percent5Minutes, 10 percent of traffic is shifted in the first interval while remaining all traffic is shifted after 5 minutes.
Reference: Gradual Code Deployment

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Q34: You are using AWS SAM templates to deploy a serverless application. Which of the following resource will embed application from Amazon S3 buckets?

  • A. AWS::Serverless::Api
  • B. AWS::Serverless::Application
  • C. AWS::Serverless::Layerversion
  • D. AWS::Serverless::Function


Answer – B
AWS::Serverless::Application resource in AWS SAm template is used to embed application frm Amazon S3 buckets.
Reference: Declaring Serverless Resources

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Q35: You are using AWS Envelope Encryption for encrypting all sensitive data. Which of the followings is True with regards to Envelope Encryption?

  • A. Data is encrypted be encrypting Data key which is further encrypted using encrypted Master Key.
  • B. Data is encrypted by plaintext Data key which is further encrypted using encrypted Master Key.
  • C. Data is encrypted by encrypted Data key which is further encrypted using plaintext Master Key.
  • D. Data is encrypted by plaintext Data key which is further encrypted using plaintext Master Key.


Answer – D
With Envelope Encryption, unencrypted data is encrypted using plaintext Data key. This Data is further encrypted using plaintext Master key. This plaintext Master key is securely stored in AWS KMS & known as Customer Master Keys.
Reference: AWS Key Management Service Concepts

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Q36: You are developing an application that will be comprised of the following architecture –

  1. A set of Ec2 instances to process the videos.
  2. These (Ec2 instances) will be spun up by an autoscaling group.
  3. SQS Queues to maintain the processing messages.
  4. There will be 2 pricing tiers.

How will you ensure that the premium customers videos are given more preference?

  • A. Create 2 Autoscaling Groups, one for normal and one for premium customers
  • B. Create 2 set of Ec2 Instances, one for normal and one for premium customers
  • C. Create 2 SQS queus, one for normal and one for premium customers
  • D. Create 2 Elastic Load Balancers, one for normal and one for premium customers.


Answer – C
The ideal option would be to create 2 SQS queues. Messages can then be processed by the application from the high priority queue first.<br? The other options are not the ideal options. They would lead to extra costs and also extra maintenance.
Reference: SQS

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Q37: You are developing an application that will interact with a DynamoDB table. The table is going to take in a lot of read and write operations. Which of the following would be the ideal partition key for the DynamoDB table to ensure ideal performance?

  • A. CustomerID
  • B. CustomerName
  • C. Location
  • D. Age


Answer- A
Use high-cardinality attributes. These are attributes that have distinct values for each item, like e-mailid, employee_no, customerid, sessionid, orderid, and so on..
Use composite attributes. Try to combine more than one attribute to form a unique key.
Reference: Choosing the right DynamoDB Partition Key

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Q38: A developer is making use of AWS services to develop an application. He has been asked to develop the application in a manner to compensate any network delays. Which of the following two mechanisms should he implement in the application?

  • A. Multiple SQS queues
  • B. Exponential backoff algorithm
  • C. Retries in your application code
  • D. Consider using the Java sdk.


Answer- B. and C.
In addition to simple retries, each AWS SDK implements exponential backoff algorithm for better flow control. The idea behind exponential backoff is to use progressively longer waits between retries for consecutive error responses. You should implement a maximum delay interval, as well as a maximum number of retries. The maximum delay interval and maximum number of retries are not necessarily fixed values, and should be set based on the operation being performed, as well as other local factors, such as network latency.
Reference: Error Retries and Exponential Backoff in AWS

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Q39: An application is being developed that is going to write data to a DynamoDB table. You have to setup the read and write throughput for the table. Data is going to be read at the rate of 300 items every 30 seconds. Each item is of size 6KB. The reads can be eventual consistent reads. What should be the read capacity that needs to be set on the table?

  • A. 10
  • B. 20
  • C. 6
  • D. 30


Answer – A

Since there are 300 items read every 30 seconds , that means there are (300/30) = 10 items read every second.
Since each item is 6KB in size , that means , 2 reads will be required for each item.
So we have total of 2*10 = 20 reads for the number of items per second
Since eventual consistency is required , we can divide the number of reads(20) by 2 , and in the end we get the Read Capacity of 10.

Reference: Read/Write Capacity Mode


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Q40: You are in charge of deploying an application that will be hosted on an EC2 Instance and sit behind an Elastic Load balancer. You have been requested to monitor the incoming connections to the Elastic Load Balancer. Which of the below options can suffice this requirement?

  • A. Use AWS CloudTrail with your load balancer
  • B. Enable access logs on the load balancer
  • C. Use a CloudWatch Logs Agent
  • D. Create a custom metric CloudWatch lter on your load balancer


Answer – B
Elastic Load Balancing provides access logs that capture detailed information about requests sent to your load balancer. Each log contains information such as the time the request was received, the client’s IP address, latencies, request paths, and server responses. You can use these access logs to analyze traffic patterns and troubleshoot issues.
Reference: Access Logs for Your Application Load Balancer

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Q41: A static web site has been hosted on a bucket and is now being accessed by users. One of the web pages javascript section has been changed to access data which is hosted in another S3 bucket. Now that same web page is no longer loading in the browser. Which of the following can help alleviate the error?

  • A. Enable versioning for the underlying S3 bucket.
  • B. Enable Replication so that the objects get replicated to the other bucket
  • C. Enable CORS for the bucket
  • D. Change the Bucket policy for the bucket to allow access from the other bucket


Answer – C

Cross-origin resource sharing (CORS) defines a way for client web applications that are loaded in one domain to interact with resources in a different domain. With CORS support, you can build rich client-side web applications with Amazon S3 and selectively allow cross-origin access to your Amazon S3 resources.

Cross-Origin Resource Sharing: Use-case Scenarios The following are example scenarios for using CORS:

Scenario 1: Suppose that you are hosting a website in an Amazon S3 bucket named website as described in Hosting a Static Website on Amazon S3. Your users load the website endpoint http://website.s3-website-us-east-1.amazonaws.com. Now you want to use JavaScript on the webpages that are stored in this bucket to be able to make authenticated GET and PUT requests against the same bucket by using the Amazon S3 API endpoint for the bucket, website.s3.amazonaws.com. A browser would normally block JavaScript from allowing those requests, but with CORS you can configure your bucket to explicitly enable cross-origin requests from website.s3-website-us-east-1.amazonaws.com.

Scenario 2: Suppose that you want to host a web font from your S3 bucket. Again, browsers require a CORS check (also called a preight check) for loading web fonts. You would configure the bucket that is hosting the web font to allow any origin to make these requests.

Reference: Cross-Origin Resource Sharing (CORS)


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Q42: Your mobile application includes a photo-sharing service that is expecting tens of thousands of users at launch. You will leverage Amazon Simple Storage Service (S3) for storage of the user Images, and you must decide how to authenticate and authorize your users for access to these images. You also need to manage the storage of these images. Which two of the following approaches should you use? Choose two answers from the options below

  • A. Create an Amazon S3 bucket per user, and use your application to generate the S3 URL for the appropriate content.
  • B. Use AWS Identity and Access Management (IAM) user accounts as your application-level user database, and offload the burden of authentication from your application code.
  • C. Authenticate your users at the application level, and use AWS Security Token Service (STS)to grant token-based authorization to S3 objects.
  • D. Authenticate your users at the application level, and send an SMS token message to the user. Create an Amazon S3 bucket with the same name as the SMS message token, and move the user’s objects to that bucket.


Answer- C
The AWS Security Token Service (STS) is a web service that enables you to request temporary, limited-privilege credentials for AWS Identity and Access Management (IAM) users or for users that you authenticate (federated users). The token can then be used to grant access to the objects in S3.
You can then provides access to the objects based on the key values generated via the user id.

Reference: The AWS Security Token Service (STS)


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Q43: Your current log analysis application takes more than four hours to generate a report of the top 10 users of your web application. You have been asked to implement a system that can report this information in real time, ensure that the report is always up to date, and handle increases in the number of requests to your web application. Choose the option that is cost-effective and can fulfill the requirements.

  • A. Publish your data to CloudWatch Logs, and congure your application to Autoscale to handle the load on demand.
  • B. Publish your log data to an Amazon S3 bucket.  Use AWS CloudFormation to create an Auto Scaling group to scale your post-processing application which is congured to pull down your log les stored an Amazon S3
  • C. Post your log data to an Amazon Kinesis data stream, and subscribe your log-processing application so that is congured to process your logging data.
  • D. Create a multi-AZ Amazon RDS MySQL cluster, post the logging data to MySQL, and run a map reduce job to retrieve the required information on user counts.

Answer:


Answer – C
Amazon Kinesis makes it easy to collect, process, and analyze real-time, streaming data so you can get timely insights and react quickly to new information. Amazon Kinesis offers key capabilities to cost effectively process streaming data at any scale, along with the flexibility to choose the tools that best suit the requirements of your application. With Amazon Kinesis, you can ingest real-time data such as application logs, website clickstreams, IoT telemetry data, and more into your databases, data lakes and data warehouses, or build your own real-time applications using this data.
Reference: Amazon Kinesis

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Q44: You’ve been instructed to develop a mobile application that will make use of AWS services. You need to decide on a data store to store the user sessions. Which of the following would be an ideal data store for session management?

  • A. AWS Simple Storage Service
  • B. AWS DynamoDB
  • C. AWS RDS
  • D. AWS Redshift

Answer:


Answer – B
DynamoDB is a alternative solution which can be used for storage of session management. The latency of access to data is less , hence this can be used as a data store for session management
Reference: Scalable Session Handling in PHP Using Amazon DynamoDB

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Q45: Your application currently interacts with a DynamoDB table. Records are inserted into the table via the application. There is now a requirement to ensure that whenever items are updated in the DynamoDB primary table , another record is inserted into a secondary table. Which of the below feature should be used when developing such a solution?

  • A. AWS DynamoDB Encryption
  • B. AWS DynamoDB Streams
  • C. AWS DynamoDB Accelerator
  • D. AWSTable Accelerator


Answer – B
DynamoDB Streams Use Cases and Design Patterns This post describes some common use cases you might encounter, along with their design options and solutions, when migrating data from relational data stores to Amazon DynamoDB. We will consider how to manage the following scenarios:

  • How do you set up a relationship across multiple tables in which, based on the value of an item from one table, you update the item in a second table?
  • How do you trigger an event based on a particular transaction?
  • How do you audit or archive transactions?
  • How do you replicate data across multiple tables (similar to that of materialized views/streams/replication in relational data stores)?

Relational databases provide native support for transactions, triggers, auditing, and replication. Typically, a transaction in a database refers to performing create, read, update, and delete (CRUD) operations against multiple tables in a block. A transaction can have only two states—success or failure. In other words, there is no partial completion. As a NoSQL database, DynamoDB is not designed to support transactions. Although client-side libraries are available to mimic the transaction capabilities, they are not scalable and cost-effective. For example, the Java Transaction Library for DynamoDB creates 7N+4 additional writes for every write operation. This is partly because the library holds metadata to manage the transactions to ensure that it’s consistent and can be rolled back before commit. You can use DynamoDB Streams to address all these use cases. DynamoDB Streams is a powerful service that you can combine with other AWS services to solve many similar problems. When enabled, DynamoDB Streams captures a time-ordered sequence of item-level modifications in a DynamoDB table and durably stores the information for up to 24 hours. Applications can access a series of stream records, which contain an item change, from a DynamoDB stream in near real time. AWS maintains separate endpoints for DynamoDB and DynamoDB Streams. To work with database tables and indexes, your application must access a DynamoDB endpoint. To read and process DynamoDB Streams records, your application must access a DynamoDB Streams endpoint in the same Region. All of the other options are incorrect since none of these would meet the core requirement.
Reference: DynamoDB Streams Use Cases and Design Patterns


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Q46: An application has been making use of AWS DynamoDB for its back-end data store. The size of the table has now grown to 20 GB , and the scans on the table are causing throttling errors. Which of the following should now be implemented to avoid such errors?

  • A. Large Page size
  • B. Reduced page size
  • C. Parallel Scans
  • D. Sequential scans

Answer – B
When you scan your table in Amazon DynamoDB, you should follow the DynamoDB best practices for avoiding sudden bursts of read activity. You can use the following technique to minimize the impact of a scan on a table’s provisioned throughput. Reduce page size Because a Scan operation reads an entire page (by default, 1 MB), you can reduce the impact of the scan operation by setting a smaller page size. The Scan operation provides a Limit parameter that you can use to set the page size for your request. Each Query or Scan request that has a smaller page size uses fewer read operations and creates a “pause” between each request. For example, suppose that each item is 4 KB and you set the page size to 40 items. A Query request would then consume only 20 eventually consistent read operations or 40 strongly consistent read operations. A larger number of smaller Query or Scan operations would allow your other critical requests to succeed without throttling.
Reference1: Rate-Limited Scans in Amazon DynamoDB

Reference2: Best Practices for Querying and Scanning Data


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Q47: Which of the following is correct way of passing a stage variable to an HTTP URL ? (Select TWO.)

  • A. http://example.com/${}/prod
  • B. http://example.com/${stageVariables.}/prod
  • C. http://${stageVariables.}.example.com/dev/operation
  • D. http://${stageVariables}.example.com/dev/operation
  • E. http://${}.example.com/dev/operation
  • F. http://example.com/${stageVariables}/prod


Answer – B. and C.
A stage variable can be used as part of HTTP integration URL as in following cases, ·         A full URI without protocol ·         A full domain ·         A subdomain ·         A path ·         A query string In the above case , option B & C displays stage variable as a path & sub-domain.
Reference: Amazon API Gateway Stage Variables Reference

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Q48: Your company is planning on creating new development environments in AWS. They want to make use of their existing Chef recipes which they use for their on-premise configuration for servers in AWS. Which of the following service would be ideal to use in this regard?

  • A. AWS Elastic Beanstalk
  • B. AWS OpsWork
  • C. AWS Cloudformation
  • D. AWS SQS


Answer – B
AWS OpsWorks is a configuration management service that provides managed instances of Chef and Puppet. Chef and Puppet are automation platforms that allow you to use code to automate the configurations of your servers. OpsWorks lets you use Chef and Puppet to automate how servers are configured, deployed, and managed across your Amazon EC2 instances or on-premises compute environments All other options are invalid since they cannot be used to work with Chef recipes for configuration management.
Reference: AWS OpsWorks

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Q49: Your company has developed a web application and is hosting it in an Amazon S3 bucket configured for static website hosting. The users can log in to this app using their Google/Facebook login accounts. The application is using the AWS SDK for JavaScript in the browser to access data stored in an Amazon DynamoDB table. How can you ensure that API keys for access to your data in DynamoDB are kept secure?

  • A. Create an Amazon S3 role in IAM with access to the specific DynamoDB tables, and assign it to the bucket hosting your website
  • B. Configure S3 bucket tags with your AWS access keys for your bucket hosing your website so that the application can query them for access.
  • C. Configure a web identity federation role within IAM to enable access to the correct DynamoDB resources and retrieve temporary credentials
  • D. Store AWS keys in global variables within your application and configure the application to use these credentials when making requests.


Answer – C
With web identity federation, you don’t need to create custom sign-in code or manage your own user identities. Instead, users of your app can sign in using a well-known identity provider (IdP) —such as Login with Amazon, Facebook, Google, or any other OpenID Connect (OIDC)-compatible IdP, receive an authentication token, and then exchange that token for temporary security credentials in AWS that map to an IAM role with permissions to use the resources in your AWS account. Using an IdP helps you keep your AWS account secure, because you don’t have to embed and distribute long-term security credentials with your application. Option A is invalid since Roles cannot be assigned to S3 buckets Options B and D are invalid since the AWS Access keys should not be used
Reference: About Web Identity Federation

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Q50: Your application currently makes use of AWS Cognito for managing user identities. You want to analyze the information that is stored in AWS Cognito for your application. Which of the following features of AWS Cognito should you use for this purpose?

  • A. Cognito Data
  • B. Cognito Events
  • C. Cognito Streams
  • D. Cognito Callbacks


Answer – C
Amazon Cognito Streams gives developers control and insight into their data stored in Amazon Cognito. Developers can now configure a Kinesis stream to receive events as data is updated and synchronized. Amazon Cognito can push each dataset change to a Kinesis stream you own in real time. All other options are invalid since you should use Cognito Streams
Reference:

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Q51: You’ve developed a set of scripts using AWS Lambda. These scripts need to access EC2 Instances in a VPC. Which of the following needs to be done to ensure that the AWS Lambda function can access the resources in the VPC. Choose 2 answers from the options given below

  • A. Ensure that the subnet ID’s are mentioned when conguring the Lambda function
  • B. Ensure that the NACL ID’s are mentioned when conguring the Lambda function
  • C. Ensure that the Security Group ID’s are mentioned when conguring the Lambda function
  • D. Ensure that the VPC Flow Log ID’s are mentioned when conguring the Lambda function


Answer: A and C.
AWS Lambda runs your function code securely within a VPC by default. However, to enable your Lambda function to access resources inside your private VPC, you must provide additional VPCspecific configuration information that includes VPC subnet IDs and security group IDs. AWS Lambda uses this information to set up elastic network interfaces (ENIs) that enable your function to connect securely to other resources within your private VPC.
Reference: Configuring a Lambda Function to Access Resources in an Amazon VPC

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Q52: You’ve currently been tasked to migrate an existing on-premise environment into Elastic Beanstalk. The application does not make use of Docker containers. You also can’t see any relevant environments in the beanstalk service that would be suitable to host your application. What should you consider doing in this case?

  • A. Migrate your application to using Docker containers and then migrate the app to the Elastic Beanstalk environment.
  • B. Consider using Cloudformation to deploy your environment to Elastic Beanstalk
  • C. Consider using Packer to create a custom platform
  • D. Consider deploying your application using the Elastic Container Service


Answer – C
Elastic Beanstalk supports custom platforms. A custom platform is a more advanced customization than a Custom Image in several ways. A custom platform lets you develop an entire new platform from scratch, customizing the operating system, additional software, and scripts that Elastic Beanstalk runs on platform instances. This flexibility allows you to build a platform for an application that uses a language or other infrastructure software, for which Elastic Beanstalk doesn’t provide a platform out of the box. Compare that to custom images, where you modify an AMI for use with an existing Elastic Beanstalk platform, and Elastic Beanstalk still provides the platform scripts and controls the platform’s software stack. In addition, with custom platforms you use an automated, scripted way to create and maintain your customization, whereas with custom images you make the changes manually over a running instance. To create a custom platform, you build an Amazon Machine Image (AMI) from one of the supported operating systems—Ubuntu, RHEL, or Amazon Linux (see the flavor entry in Platform.yaml File Format for the exact version numbers)—and add further customizations. You create your own Elastic Beanstalk platform using Packer, which is an open-source tool for creating machine images for many platforms, including AMIs for use with Amazon EC2. An Elastic Beanstalk platform comprises an AMI configured to run a set of software that supports an application, and metadata that can include custom configuration options and default configuration option settings.
Reference: AWS Elastic Beanstalk Custom Platforms

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Q53: Company B is writing 10 items to the Dynamo DB table every second. Each item is 15.5Kb in size. What would be the required provisioned write throughput for best performance? Choose the correct answer from the options below.

  • A. 10
  • B. 160
  • C. 155
  • D. 16


Answer – B.
Company B is writing 10 items to the Dynamo DB table every second. Each item is 15.5Kb in size. What would be the required provisioned write throughput for best performance? Choose the correct answer from the options below.
Reference: Read/Write Capacity Mode

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Q54: Which AWS Service can be used to automatically install your application code onto EC2, on premises systems and Lambda?

  • A. CodeCommit
  • B. X-Ray
  • C. CodeBuild
  • D. CodeDeploy


Answer: D

Reference: AWS CodeDeploy


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Q55: Which AWS service can be used to compile source code, run tests and package code?

  • A. CodePipeline
  • B. CodeCommit
  • C. CodeBuild
  • D. CodeDeploy


Answer: D

Reference: AWS CodeDeploy Answer: B.

Reference: AWS CodeBuild


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Q56: How can your prevent CloudFormation from deleting your entire stack on failure? (Choose 2)

  • A. Set the Rollback on failure radio button to No in the CloudFormation console
  • B. Set Termination Protection to Enabled in the CloudFormation console
  • C. Use the –disable-rollback flag with the AWS CLI
  • D. Use the –enable-termination-protection protection flag with the AWS CLI

Answer: A. and C.

Reference: Protecting a Stack From Being Deleted

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Q57: Which of the following practices allows multiple developers working on the same application to merge code changes frequently, without impacting each other and enables the identification of bugs early on in the release process?

  • A. Continuous Integration
  • B. Continuous Deployment
  • C. Continuous Delivery
  • D. Continuous Development

Answer: A

Reference: What is Continuous Integration?

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Q58: When deploying application code to EC2, the AppSpec file can be written in which language?

  • A. JSON
  • B. JSON or YAML
  • C. XML
  • D. YAML

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Q59: Part of your CloudFormation deployment fails due to a mis-configuration, by defaukt what will happen?

  • A. CloudFormation will rollback only the failed components
  • B. CloudFormation will rollback the entire stack
  • C. Failed component will remain available for debugging purposes
  • D. CloudFormation will ask you if you want to continue with the deployment

Answer: B

Reference: Troubleshooting AWS CloudFormation


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Q60: You want to receive an email whenever a user pushes code to CodeCommit repository, how can you configure this?

  • A. Create a new SNS topic and configure it to poll for CodeCommit eveents. Ask all users to subscribe to the topic to receive notifications
  • B. Configure a CloudWatch Events rule to send a message to SES which will trigger an email to be sent whenever a user pushes code to the repository.
  • C. Configure Notifications in the console, this will create a CloudWatch events rule to send a notification to a SNS topic which will trigger an email to be sent to the user.
  • D. Configure a CloudWatch Events rule to send a message to SQS which will trigger an email to be sent whenever a user pushes code to the repository.

Answer: C

Reference: Getting Started with Amazon SNS


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Q61: Which AWS service can be used to centrally store and version control your application source code, binaries and libraries

  • A. CodeCommit
  • B. CodeBuild
  • C. CodePipeline
  • D. ElasticFileSystem

Answer: A

Reference: AWS CodeCommit


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Q62: You are using CloudFormation to create a new S3 bucket, which of the following sections would you use to define the properties of your bucket?

  • A. Conditions
  • B. Parameters
  • C. Outputs
  • D. Resources

Answer: D

Reference: Resources


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Q63: You are deploying a number of EC2 and RDS instances using CloudFormation. Which section of the CloudFormation template would you use to define these?

  • A. Transforms
  • B. Outputs
  • C. Resources
  • D. Instances

Answer: C.
The Resources section defines your resources you are provisioning. Outputs is used to output user defines data relating to the reources you have built and can also used as input to another CloudFormation stack. Transforms is used to reference code located in S3.
Reference: Resources

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Q64: Which AWS service can be used to fully automate your entire release process?

  • A. CodeDeploy
  • B. CodePipeline
  • C. CodeCommit
  • D. CodeBuild

Answer: B.
AWS CodePipeline is a fully managed continuous delivery service that helps you automate your release pipelines for fast and reliable application and infrastructure updates

Reference: AWS CodePipeline


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Q65: You want to use the output of your CloudFormation stack as input to another CloudFormation stack. Which sections of the CloudFormation template would you use to help you configure this?

  • A. Outputs
  • B. Transforms
  • C. Resources
  • D. Exports

Answer: A.
Outputs is used to output user defines data relating to the reources you have built and can also used as input to another CloudFormation stack.
Reference: CloudFormation Outputs

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Q66: You have some code located in an S3 bucket that you want to reference in your CloudFormation template. Which section of the template can you use to define this?

  • A. Inputs
  • B. Resources
  • C. Transforms
  • D. Files

Answer: C.
Transforms is used to reference code located in S3 and also specififying the use of the Serverless Application Model (SAM) for Lambda deployments.
Reference: Transforms

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Q67: You are deploying an application to a number of Ec2 instances using CodeDeploy. What is the name of the file
used to specify source files and lifecycle hooks?

  • A. buildspec.yml
  • B. appspec.json
  • C. appspec.yml
  • D. buildspec.json

Answer: C.

Reference: CodeDeploy AppSpec File Reference

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Q68: Which of the following approaches allows you to re-use pieces of CloudFormation code in multiple templates, for common use cases like provisioning a load balancer or web server?

  • A. Share the code using an EBS volume
  • B. Copy and paste the code into the template each time you need to use it
  • C. Use a cloudformation nested stack
  • D. Store the code you want to re-use in an AMI and reference the AMI from within your CloudFormation template.

Answer: C.

Reference: Working with Nested Stacks

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Q69: In the CodeDeploy AppSpec file, what are hooks used for?

  • A. To reference AWS resources that will be used during the deployment
  • B. Hooks are reserved for future use
  • C. To specify files you want to copy during the deployment.
  • D. To specify, scripts or function that you want to run at set points in the deployment lifecycle

Answer: D.
The ‘hooks’ section for an EC2/On-Premises deployment contains mappings that link deployment lifecycle event hooks to one or more scripts.

Reference: AppSpec ‘hooks’ Section

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Q70: Which command can you use to encrypt a plain text file using CMK?

  • A. aws kms-encrypt
  • B. aws iam encrypt
  • C. aws kms encrypt
  • D. aws encrypt

Answer: C.
aws kms encrypt –key-id 1234abcd-12ab-34cd-56ef-1234567890ab –plaintext fileb://ExamplePlaintextFile –output text –query CiphertextBlob > C:\Temp\ExampleEncryptedFile.base64

Reference: AWS CLI Encrypt

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Q72: Which of the following is an encrypted key used by KMS to encrypt your data

  • A. Custmoer Mamaged Key
  • B. Encryption Key
  • C. Envelope Key
  • D. Customer Master Key

Answer: C.
Your Data key also known as the Enveloppe key is encrypted using the master key.This approach is known as Envelope encryption.
Envelope encryption is the practice of encrypting plaintext data with a data key, and then encrypting the data key under another key.

Reference: Envelope Encryption

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Q73: Which of the following statements are correct? (Choose 2)

  • A. The Customer Master Key is used to encrypt and decrypt the Envelope Key or Data Key
  • B. The Envelope Key or Data Key is used to encrypt and decrypt plain text files.
  • C. The envelope Key or Data Key is used to encrypt and decrypt the Customer Master Key.
  • D. The Customer MasterKey is used to encrypt and decrypt plain text files.

Answer: A. and B.

Reference: AWS Key Management Service Concepts

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Q74: Which of the following statements is correct in relation to kMS/ (Choose 2)

  • A. KMS Encryption keys are regional
  • B. You cannot export your customer master key
  • C. You can export your customer master key.
  • D. KMS encryption Keys are global

Answer: A. and B.

Reference: AWS Key Management Service FAQs

Q75:  A developer is preparing a deployment package for a Java implementation of an AWS Lambda function. What should the developer include in the deployment package? (Select TWO.)
A. Compiled application code
B. Java runtime environment
C. References to the event sources
D. Lambda execution role
E. Application dependencies


Answer: C. E.
Notes: To create a Lambda function, you first create a Lambda function deployment package. This package is a .zip or .jar file consisting of your code and any dependencies.
Reference: Lambda deployment packages.

Q76: A developer uses AWS CodeDeploy to deploy a Python application to a fleet of Amazon EC2 instances that run behind an Application Load Balancer. The instances run in an Amazon EC2 Auto Scaling group across multiple Availability Zones. What should the developer include in the CodeDeploy deployment package?
A. A launch template for the Amazon EC2 Auto Scaling group
B. A CodeDeploy AppSpec file
C. An EC2 role that grants the application access to AWS services
D. An IAM policy that grants the application access to AWS services


Answer: B.
Notes: The CodeDeploy AppSpec (application specific) file is unique to CodeDeploy. The AppSpec file is used to manage each deployment as a series of lifecycle event hooks, which are defined in the file.
Reference: CodeDeploy application specification (AppSpec) files.
Category: Deployment

Q76: A company is working on a project to enhance its serverless application development process. The company hosts applications on AWS Lambda. The development team regularly updates the Lambda code and wants to use stable code in production. Which combination of steps should the development team take to configure Lambda functions to meet both development and production requirements? (Select TWO.)

A. Create a new Lambda version every time a new code release needs testing.
B. Create two Lambda function aliases. Name one as Production and the other as Development. Point the Production alias to a production-ready unqualified Amazon Resource Name (ARN) version. Point the Development alias to the $LATEST version.
C. Create two Lambda function aliases. Name one as Production and the other as Development. Point the Production alias to the production-ready qualified Amazon Resource Name (ARN) version. Point the Development alias to the variable LAMBDA_TASK_ROOT.
D. Create a new Lambda layer every time a new code release needs testing.
E. Create two Lambda function aliases. Name one as Production and the other as Development. Point the Production alias to a production-ready Lambda layer Amazon Resource Name (ARN). Point the Development alias to the $LATEST layer ARN.


Answer: A. B.
Notes: Lambda function versions are designed to manage deployment of functions. They can be used for code changes, without affecting the stable production version of the code. By creating separate aliases for Production and Development, systems can initiate the correct alias as needed. A Lambda function alias can be used to point to a specific Lambda function version. Using the functionality to update an alias and its linked version, the development team can update the required version as needed. The $LATEST version is the newest published version.
Reference: Lambda function versions.

For more information about Lambda layers, see Creating and sharing Lambda layers.

For more information about Lambda function aliases, see Lambda function aliases.

Category: Deployment

Q77: Each time a developer publishes a new version of an AWS Lambda function, all the dependent event source mappings need to be updated with the reference to the new version’s Amazon Resource Name (ARN). These updates are time consuming and error-prone. Which combination of actions should the developer take to avoid performing these updates when publishing a new Lambda version? (Select TWO.)
A. Update event source mappings with the ARN of the Lambda layer.
B. Point a Lambda alias to a new version of the Lambda function.
C. Create a Lambda alias for each published version of the Lambda function.
D. Point a Lambda alias to a new Lambda function alias.
E. Update the event source mappings with the Lambda alias ARN.


Answer: B. E.
Notes: A Lambda alias is a pointer to a specific Lambda function version. Instead of using ARNs for the Lambda function in event source mappings, you can use an alias ARN. You do not need to update your event source mappings when you promote a new version or roll back to a previous version.
Reference: Lambda function aliases.
Category: Deployment

Q78:  A company wants to store sensitive user data in Amazon S3 and encrypt this data at rest. The company must manage the encryption keys and use Amazon S3 to perform the encryption. How can a developer meet these requirements?
A. Enable default encryption for the S3 bucket by using the option for server-side encryption with customer-provided encryption keys (SSE-C).
B. Enable client-side encryption with an encryption key. Upload the encrypted object to the S3 bucket.
C. Enable server-side encryption with Amazon S3 managed encryption keys (SSE-S3). Upload an object to the S3 bucket.
D. Enable server-side encryption with customer-provided encryption keys (SSE-C). Upload an object to the S3 bucket.


Answer: D.
Notes: When you upload an object, Amazon S3 uses the encryption key you provide to apply AES-256 encryption to your data and removes the encryption key from memory.
Reference: Protecting data using server-side encryption with customer-provided encryption keys (SSE-C).

Category: Security

Q79: A company is developing a Python application that submits data to an Amazon DynamoDB table. The company requires client-side encryption of specific data items and end-to-end protection for the encrypted data in transit and at rest. Which combination of steps will meet the requirement for the encryption of specific data items? (Select TWO.)

A. Generate symmetric encryption keys with AWS Key Management Service (AWS KMS).
B. Generate asymmetric encryption keys with AWS Key Management Service (AWS KMS).
C. Use generated keys with the DynamoDB Encryption Client.
D. Use generated keys to configure DynamoDB table encryption with AWS managed customer master keys (CMKs).
E. Use generated keys to configure DynamoDB table encryption with AWS owned customer master keys (CMKs).


Answer: A. C.
Notes: When the DynamoDB Encryption Client is configured to use AWS KMS, it uses a customer master key (CMK) that is always encrypted when used outside of AWS KMS. This cryptographic materials provider returns a unique encryption key and signing key for every table item. This method of encryption uses a symmetric CMK.
Reference: Direct KMS Materials Provider.
Category: Deployment

Q80: A company is developing a REST API with Amazon API Gateway. Access to the API should be limited to users in the existing Amazon Cognito user pool. Which combination of steps should a developer perform to secure the API? (Select TWO.)
A. Create an AWS Lambda authorizer for the API.
B. Create an Amazon Cognito authorizer for the API.
C. Configure the authorizer for the API resource.
D. Configure the API methods to use the authorizer.
E. Configure the authorizer for the API stage.


Answer: B. D.
Notes: An Amazon Cognito authorizer should be used for integration with Amazon Cognito user pools. In addition to creating an authorizer, you are required to configure an API method to use that authorizer for the API.
Reference: Control access to a REST API using Amazon Cognito user pools as authorizer.
Category: Security

Q81: A developer is implementing a mobile app to provide personalized services to app users. The application code makes calls to Amazon S3 and Amazon Simple Queue Service (Amazon SQS). Which options can the developer use to authenticate the app users? (Select TWO.)
A. Authenticate to the Amazon Cognito identity pool directly.
B. Authenticate to AWS Identity and Access Management (IAM) directly.
C. Authenticate to the Amazon Cognito user pool directly.
D. Federate authentication by using Login with Amazon with the users managed with AWS Security Token Service (AWS STS).
E. Federate authentication by using Login with Amazon with the users managed with the Amazon Cognito user pool.


Answer: C. E.
Notes: The Amazon Cognito user pool provides direct user authentication. The Amazon Cognito user pool provides a federated authentication option with third-party identity provider (IdP), including amazon.com.
Reference: Adding User Pool Sign-in Through a Third Party.
Category: Security

Question: A company is implementing several order processing workflows. Each workflow is implemented by using AWS Lambda functions for each task. Which combination of steps should a developer follow to implement these workflows? (Select TWO.)
A. Define a AWS Step Functions task for each Lambda function.
B. Define a AWS Step Functions task for each workflow.
C. Write code that polls the AWS Step Functions invocation to coordinate each workflow.
D. Define an AWS Step Functions state machine for each workflow.
E. Define an AWS Step Functions state machine for each Lambda function.
Answer: A. D.
Notes: Step Functions is based on state machines and tasks. A state machine is a workflow. Tasks perform work by coordinating with other AWS services, such as Lambda. A state machine is a workflow. It can be used to express a workflow as a number of states, their relationships, and their input and output. You can coordinate individual tasks with Step Functions by expressing your workflow as a finite state machine, written in the Amazon States Language.
ReferenceText: Getting Started with AWS Step Functions.
ReferenceUrl: https://aws.amazon.com/step-functions/getting-started/
Category: Development

Welcome to AWS Certified Developer Associate Exam Preparation: Definition and Objectives, Top 100 Questions and Answers dump, White papers, Courses, Labs and Training Materials, Exam info and details, References, Jobs, Others AWS Certificates

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What is the AWS Certified Developer Associate Exam?

This AWS Certified Developer-Associate Examination is intended for individuals who perform a Developer role. It validates an examinee’s ability to:

  • Demonstrate an understanding of core AWS services, uses, and basic AWS architecture best practices
  • Demonstrate proficiency in developing, deploying, and debugging cloud-based applications by using AWS

Recommended general IT knowledge
The target candidate should have the following:
– In-depth knowledge of at least one high-level programming language
– Understanding of application lifecycle management
– The ability to write code for serverless applications
– Understanding of the use of containers in the development process

Recommended AWS knowledge
The target candidate should be able to do the following:

  • Use the AWS service APIs, CLI, and software development kits (SDKs) to write applications
  • Identify key features of AWS services
  • Understand the AWS shared responsibility model
  • Use a continuous integration and continuous delivery (CI/CD) pipeline to deploy applications on AWS
  • Use and interact with AWS services
  • Apply basic understanding of cloud-native applications to write code
  • Write code by using AWS security best practices (for example, use IAM roles instead of secret and access keys in the code)
  • Author, maintain, and debug code modules on AWS

What is considered out of scope for the target candidate?
The following is a non-exhaustive list of related job tasks that the target candidate is not expected to be able to perform. These items are considered out of scope for the exam:
– Design architectures (for example, distributed system, microservices)
– Design and implement CI/CD pipelines

  • Administer IAM users and groups
  • Administer Amazon Elastic Container Service (Amazon ECS)
  • Design AWS networking infrastructure (for example, Amazon VPC, AWS Direct Connect)
  • Understand compliance and licensing

Exam content
Response types
There are two types of questions on the exam:
– Multiple choice: Has one correct response and three incorrect responses (distractors)
– Multiple response: Has two or more correct responses out of five or more response options
Select one or more responses that best complete the statement or answer the question. Distractors, or incorrect answers, are response options that a candidate with incomplete knowledge or skill might choose.
Distractors are generally plausible responses that match the content area.
Unanswered questions are scored as incorrect; there is no penalty for guessing. The exam includes 50 questions that will affect your score.

Unscored content
The exam includes 15 unscored questions that do not affect your score. AWS collects information about candidate performance on these unscored questions to evaluate these questions for future use as scored questions. These unscored questions are not identified on the exam.

Exam results
The AWS Certified Developer – Associate (DVA-C01) exam is a pass or fail exam. The exam is scored against a minimum standard established by AWS professionals who follow certification industry best practices and guidelines.
Your results for the exam are reported as a scaled score of 100–1,000. The minimum passing score is 720.
Your score shows how you performed on the exam as a whole and whether you passed. Scaled scoring models help equate scores across multiple exam forms that might have slightly different difficulty levels.
Your score report could contain a table of classifications of your performance at each section level. This information is intended to provide general feedback about your exam performance. The exam uses a compensatory scoring model, which means that you do not need to achieve a passing score in each section. You need to pass only the overall exam.
Each section of the exam has a specific weighting, so some sections have more questions than other sections have. The table contains general information that highlights your strengths and weaknesses. Use caution when interpreting section-level feedback.

Content outline
This exam guide includes weightings, test domains, and objectives for the exam. It is not a comprehensive listing of the content on the exam. However, additional context for each of the objectives is available to help guide your preparation for the exam. The following table lists the main content domains and their weightings. The table precedes the complete exam content outline, which includes the additional context.
The percentage in each domain represents only scored content.

Domain 1: Deployment 22%
Domain 2: Security 26%
Domain 3: Development with AWS Services 30%
Domain 4: Refactoring 10%
Domain 5: Monitoring and Troubleshooting 12%

Domain 1: Deployment
1.1 Deploy written code in AWS using existing CI/CD pipelines, processes, and patterns.
–  Commit code to a repository and invoke build, test and/or deployment actions
–  Use labels and branches for version and release management
–  Use AWS CodePipeline to orchestrate workflows against different environments
–  Apply AWS CodeCommit, AWS CodeBuild, AWS CodePipeline, AWS CodeStar, and AWS
CodeDeploy for CI/CD purposes
–  Perform a roll back plan based on application deployment policy

1.2 Deploy applications using AWS Elastic Beanstalk.
–  Utilize existing supported environments to define a new application stack
–  Package the application
–  Introduce a new application version into the Elastic Beanstalk environment
–  Utilize a deployment policy to deploy an application version (i.e., all at once, rolling, rolling with batch, immutable)
–  Validate application health using Elastic Beanstalk dashboard
–  Use Amazon CloudWatch Logs to instrument application logging

1.3 Prepare the application deployment package to be deployed to AWS.
–  Manage the dependencies of the code module (like environment variables, config files and static image files) within the package
–  Outline the package/container directory structure and organize files appropriately
–  Translate application resource requirements to AWS infrastructure parameters (e.g., memory, cores)

1.4 Deploy serverless applications.
–  Given a use case, implement and launch an AWS Serverless Application Model (AWS SAM) template
–  Manage environments in individual AWS services (e.g., Differentiate between Development, Test, and Production in Amazon API Gateway)

Domain 2: Security
2.1 Make authenticated calls to AWS services.
–  Communicate required policy based on least privileges required by application.
–  Assume an IAM role to access a service
–  Use the software development kit (SDK) credential provider on-premises or in the cloud to access AWS services (local credentials vs. instance roles)

2.2 Implement encryption using AWS services.
– Encrypt data at rest (client side; server side; envelope encryption) using AWS services
–  Encrypt data in transit

2.3 Implement application authentication and authorization.
– Add user sign-up and sign-in functionality for applications with Amazon Cognito identity or user pools
–  Use Amazon Cognito-provided credentials to write code that access AWS services.
–  Use Amazon Cognito sync to synchronize user profiles and data
–  Use developer-authenticated identities to interact between end user devices, backend
authentication, and Amazon Cognito

Domain 3: Development with AWS Services
3.1 Write code for serverless applications.
– Compare and contrast server-based vs. serverless model (e.g., micro services, stateless nature of serverless applications, scaling serverless applications, and decoupling layers of serverless applications)
– Configure AWS Lambda functions by defining environment variables and parameters (e.g., memory, time out, runtime, handler)
– Create an API endpoint using Amazon API Gateway
–  Create and test appropriate API actions like GET, POST using the API endpoint
–  Apply Amazon DynamoDB concepts (e.g., tables, items, and attributes)
–  Compute read/write capacity units for Amazon DynamoDB based on application requirements
–  Associate an AWS Lambda function with an AWS event source (e.g., Amazon API Gateway, Amazon CloudWatch event, Amazon S3 events, Amazon Kinesis)
–  Invoke an AWS Lambda function synchronously and asynchronously

3.2 Translate functional requirements into application design.
– Determine real-time vs. batch processing for a given use case
– Determine use of synchronous vs. asynchronous for a given use case
– Determine use of event vs. schedule/poll for a given use case
– Account for tradeoffs for consistency models in an application design

Domain 4: Refactoring
4.1 Optimize applications to best use AWS services and features.
 Implement AWS caching services to optimize performance (e.g., Amazon ElastiCache, Amazon API Gateway cache)
 Apply an Amazon S3 naming scheme for optimal read performance

4.2 Migrate existing application code to run on AWS.
– Isolate dependencies
– Run the application as one or more stateless processes
– Develop in order to enable horizontal scalability
– Externalize state

Domain 5: Monitoring and Troubleshooting

5.1 Write code that can be monitored.
– Create custom Amazon CloudWatch metrics
– Perform logging in a manner available to systems operators
– Instrument application source code to enable tracing in AWS X-Ray

5.2 Perform root cause analysis on faults found in testing or production.
– Interpret the outputs from the logging mechanism in AWS to identify errors in logs
– Check build and testing history in AWS services (e.g., AWS CodeBuild, AWS CodeDeploy, AWS CodePipeline) to identify issues
– Utilize AWS services (e.g., Amazon CloudWatch, VPC Flow Logs, and AWS X-Ray) to locate a specific faulty component

Which key tools, technologies, and concepts might be covered on the exam?

The following is a non-exhaustive list of the tools and technologies that could appear on the exam.
This list is subject to change and is provided to help you understand the general scope of services, features, or technologies on the exam.
The general tools and technologies in this list appear in no particular order.
AWS services are grouped according to their primary functions. While some of these technologies will likely be covered more than others on the exam, the order and placement of them in this list is no indication of relative weight or importance:
– Analytics
– Application Integration
– Containers
– Cost and Capacity Management
– Data Movement
– Developer Tools
– Instances (virtual machines)
– Management and Governance
– Networking and Content Delivery
– Security
– Serverless

AWS services and features

Analytics:
– Amazon Elasticsearch Service (Amazon ES)
– Amazon Kinesis
Application Integration:
– Amazon EventBridge (Amazon CloudWatch Events)
– Amazon Simple Notification Service (Amazon SNS)
– Amazon Simple Queue Service (Amazon SQS)
– AWS Step Functions

Compute:
– Amazon EC2
– AWS Elastic Beanstalk
– AWS Lambda

Containers:
– Amazon Elastic Container Registry (Amazon ECR)
– Amazon Elastic Container Service (Amazon ECS)
– Amazon Elastic Kubernetes Services (Amazon EKS)

Database:
– Amazon DynamoDB
– Amazon ElastiCache
– Amazon RDS

Developer Tools:
– AWS CodeArtifact
– AWS CodeBuild
– AWS CodeCommit
– AWS CodeDeploy
– Amazon CodeGuru
– AWS CodePipeline
– AWS CodeStar
– AWS Fault Injection Simulator
– AWS X-Ray

Management and Governance:
– AWS CloudFormation
– Amazon CloudWatch

Networking and Content Delivery:
– Amazon API Gateway
– Amazon CloudFront
– Elastic Load Balancing

Security, Identity, and Compliance:
– Amazon Cognito
– AWS Identity and Access Management (IAM)
– AWS Key Management Service (AWS KMS)

Storage:
– Amazon S3

Out-of-scope AWS services and features

The following is a non-exhaustive list of AWS services and features that are not covered on the exam.
These services and features do not represent every AWS offering that is excluded from the exam content.
Services or features that are entirely unrelated to the target job roles for the exam are excluded from this list because they are assumed to be irrelevant.
Out-of-scope AWS services and features include the following:
– AWS Application Discovery Service
– Amazon AppStream 2.0
– Amazon Chime
– Amazon Connect
– AWS Database Migration Service (AWS DMS)
– AWS Device Farm
– Amazon Elastic Transcoder
– Amazon GameLift
– Amazon Lex
– Amazon Machine Learning (Amazon ML)
– AWS Managed Services
– Amazon Mobile Analytics
– Amazon Polly

– Amazon QuickSight
– Amazon Rekognition
– AWS Server Migration Service (AWS SMS)
– AWS Service Catalog
– AWS Shield Advanced
– AWS Shield Standard
– AWS Snow Family
– AWS Storage Gateway
– AWS WAF
– Amazon WorkMail
– Amazon WorkSpaces

To succeed with the real exam, do not memorize the answers below. It is very important that you understand why a question is right or wrong and the concepts behind it by carefully reading the reference documents in the answers.

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AWS Certified Developer – Associate Practice Questions And Answers Dump

Q0: Your application reads commands from an SQS queue and sends them to web services hosted by your
partners. When a partner’s endpoint goes down, your application continually returns their commands to the queue. The repeated attempts to deliver these commands use up resources. Commands that can’t be delivered must not be lost.
How can you accommodate the partners’ broken web services without wasting your resources?

  • A. Create a delay queue and set DelaySeconds to 30 seconds
  • B. Requeue the message with a VisibilityTimeout of 30 seconds.
  • C. Create a dead letter queue and set the Maximum Receives to 3.
  • D. Requeue the message with a DelaySeconds of 30 seconds.
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C. After a message is taken from the queue and returned for the maximum number of retries, it is
automatically sent to a dead letter queue, if one has been configured. It stays there until you retrieve it for forensic purposes.

Reference: Amazon SQS Dead-Letter Queues


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Q1: A developer is writing an application that will store data in a DynamoDB table. The ratio of reads operations to write operations will be 1000 to 1, with the same data being accessed frequently.
What should the Developer enable on the DynamoDB table to optimize performance and minimize costs?

  • A. Amazon DynamoDB auto scaling
  • B. Amazon DynamoDB cross-region replication
  • C. Amazon DynamoDB Streams
  • D. Amazon DynamoDB Accelerator


D. The AWS Documentation mentions the following:

DAX is a DynamoDB-compatible caching service that enables you to benefit from fast in-memory performance for demanding applications. DAX addresses three core scenarios

  1. As an in-memory cache, DAX reduces the response times of eventually-consistent read workloads by an order of magnitude, from single-digit milliseconds to microseconds.
  2. DAX reduces operational and application complexity by providing a managed service that is API-compatible with Amazon DynamoDB, and thus requires only minimal functional changes to use with an existing application.
  3. For read-heavy or bursty workloads, DAX provides increased throughput and potential operational cost savings by reducing the need to over-provision read capacity units. This is especially beneficial for applications that require repeated reads for individual keys.

Reference: AWS DAX


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Q2: You are creating a DynamoDB table with the following attributes:

  • PurchaseOrderNumber (partition key)
  • CustomerID
  • PurchaseDate
  • TotalPurchaseValue

One of your applications must retrieve items from the table to calculate the total value of purchases for a
particular customer over a date range. What secondary index do you need to add to the table?

  • A. Local secondary index with a partition key of CustomerID and sort key of PurchaseDate; project the
    TotalPurchaseValue attribute
  • B. Local secondary index with a partition key of PurchaseDate and sort key of CustomerID; project the
    TotalPurchaseValue attribute
  • C. Global secondary index with a partition key of CustomerID and sort key of PurchaseDate; project the
    TotalPurchaseValue attribute
  • D. Global secondary index with a partition key of PurchaseDate and sort key of CustomerID; project the
    TotalPurchaseValue attribute


C. The query is for a particular CustomerID, so a Global Secondary Index is needed for a different partition
key. To retrieve only the desired date range, the PurchaseDate must be the sort key. Projecting the
TotalPurchaseValue into the index provides all the data needed to satisfy the use case.

Reference: AWS DynamoDB Global Secondary Indexes

Difference between local and global indexes in DynamoDB

    • Global secondary index — an index with a hash and range key that can be different from those on the table. A global secondary index is considered “global” because queries on the index can span all of the data in a table, across all partitions.
    • Local secondary index — an index that has the same hash key as the table, but a different range key. A local secondary index is “local” in the sense that every partition of a local secondary index is scoped to a table partition that has the same hash key.
    • Local Secondary Indexes still rely on the original Hash Key. When you supply a table with hash+range, think about the LSI as hash+range1, hash+range2.. hash+range6. You get 5 more range attributes to query on. Also, there is only one provisioned throughput.
    • Global Secondary Indexes defines a new paradigm – different hash/range keys per index.
      This breaks the original usage of one hash key per table. This is also why when defining GSI you are required to add a provisioned throughput per index and pay for it.
    • Local Secondary Indexes can only be created when you are creating the table, there is no way to add Local Secondary Index to an existing table, also once you create the index you cannot delete it.
    • Global Secondary Indexes can be created when you create the table and added to an existing table, deleting an existing Global Secondary Index is also allowed.

Throughput :

  • Local Secondary Indexes consume throughput from the table. When you query records via the local index, the operation consumes read capacity units from the table. When you perform a write operation (create, update, delete) in a table that has a local index, there will be two write operations, one for the table another for the index. Both operations will consume write capacity units from the table.
  • Global Secondary Indexes have their own provisioned throughput, when you query the index the operation will consume read capacity from the index, when you perform a write operation (create, update, delete) in a table that has a global index, there will be two write operations, one for the table another for the index*.


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Q3: When referencing the remaining time left for a Lambda function to run within the function’s code you would use:

  • A. The event object
  • B. The timeLeft object
  • C. The remains object
  • D. The context object


D. The context object.

Reference: AWS Lambda


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Q4: What two arguments does a Python Lambda handler function require?

  • A. invocation, zone
  • B. event, zone
  • C. invocation, context
  • D. event, context
D. event, context
def handler_name(event, context):

return some_value

Reference: AWS Lambda Function Handler in Python

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Q5: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only via SFTP
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere

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D. From a zip file in AWS S3 or uploaded directly from elsewhere

Reference: AWS Lambda Deployment Package

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Q6: A Lambda deployment package contains:

  • A. Function code, libraries, and runtime binaries
  • B. Only function code
  • C. Function code and libraries not included within the runtime
  • D. Only libraries not included within the runtime

C. Function code and libraries not included within the runtime

Reference: AWS Lambda Deployment Package in PowerShell

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Q7: You are attempting to SSH into an EC2 instance that is located in a public subnet. However, you are currently receiving a timeout error trying to connect. What could be a possible cause of this connection issue?

  • A. The security group associated with the EC2 instance has an inbound rule that allows SSH traffic, but does not have an outbound rule that allows SSH traffic.
  • B. The security group associated with the EC2 instance has an inbound rule that allows SSH traffic AND has an outbound rule that explicitly denies SSH traffic.
  • C. The security group associated with the EC2 instance has an inbound rule that allows SSH traffic AND the associated NACL has both an inbound and outbound rule that allows SSH traffic.
  • D. The security group associated with the EC2 instance does not have an inbound rule that allows SSH traffic AND the associated NACL does not have an outbound rule that allows SSH traffic.


D. Security groups are stateful, so you do NOT have to have an explicit outbound rule for return requests. However, NACLs are stateless so you MUST have an explicit outbound rule configured for return request.

Reference: Comparison of Security Groups and Network ACLs

AWS Security Groups and NACL


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Q8: You have instances inside private subnets and a properly configured bastion host instance in a public subnet. None of the instances in the private subnets have a public or Elastic IP address. How can you connect an instance in the private subnet to the open internet to download system updates?

  • A. Create and assign EIP to each instance
  • B. Create and attach a second IGW to the VPC.
  • C. Create and utilize a NAT Gateway
  • D. Connect to a VPN


C. You can use a network address translation (NAT) gateway in a public subnet in your VPC to enable instances in the private subnet to initiate outbound traffic to the Internet, but prevent the instances from receiving inbound traffic initiated by someone on the Internet.

Reference: AWS Network Address Translation Gateway


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Q9: What feature of VPC networking should you utilize if you want to create “elasticity” in your application’s architecture?

  • A. Security Groups
  • B. Route Tables
  • C. Elastic Load Balancer
  • D. Auto Scaling


D. Auto scaling is designed specifically with elasticity in mind. Auto scaling allows for the increase and decrease of compute power based on demand, thus creating elasticity in the architecture.

Reference: AWS Autoscalling


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Q10: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only from a directly uploaded zip file
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere

D. From a zip file in AWS S3 or uploaded directly from elsewhere

Reference: AWS Lambda

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Q11: You’re writing a script with an AWS SDK that uses the AWS API Actions and want to create AMIs for non-EBS backed AMIs for you. Which API call should occurs in the final process of creating an AMI?

  • A. RegisterImage
  • B. CreateImage
  • C. ami-register-image
  • D. ami-create-image

A. It is actually – RegisterImage. All AWS API Actions will follow the capitalization like this and don’t have hyphens in them.

Reference: API RegisterImage

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Q12: When dealing with session state in EC2-based applications using Elastic load balancers which option is generally thought of as the best practice for managing user sessions?

  • A. Having the ELB distribute traffic to all EC2 instances and then having the instance check a caching solution like ElastiCache running Redis or Memcached for session information
  • B. Permenantly assigning users to specific instances and always routing their traffic to those instances
  • C. Using Application-generated cookies to tie a user session to a particular instance for the cookie duration
  • D. Using Elastic Load Balancer generated cookies to tie a user session to a particular instance

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Q13: Which API call would best be used to describe an Amazon Machine Image?

  • A. ami-describe-image
  • B. ami-describe-images
  • C. DescribeImage
  • D. DescribeImages

D. In general, API actions stick to the PascalCase style with the first letter of every word capitalized.

Reference: API DescribeImages

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Q14: What is one key difference between an Amazon EBS-backed and an instance-store backed instance?

  • A. Autoscaling requires using Amazon EBS-backed instances
  • B. Virtual Private Cloud requires EBS backed instances
  • C. Amazon EBS-backed instances can be stopped and restarted without losing data
  • D. Instance-store backed instances can be stopped and restarted without losing data

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C. Instance-store backed images use “ephemeral” storage (temporary). The storage is only available during the life of an instance. Rebooting an instance will allow ephemeral data stay persistent. However, stopping and starting an instance will remove all ephemeral storage.

Reference: What is the difference between EBS and Instance Store?

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Q15: After having created a new Linux instance on Amazon EC2, and downloaded the .pem file (called Toto.pem) you try and SSH into your IP address (54.1.132.33) using the following command.
ssh -i my_key.pem ec2-user@52.2.222.22
However you receive the following error.
@@@@@@@@ WARNING: UNPROTECTED PRIVATE KEY FILE! @ @@@@@@@@@@@@@@@@@@@
What is the most probable reason for this and how can you fix it?

  • A. You do not have root access on your terminal and need to use the sudo option for this to work.
  • B. You do not have enough permissions to perform the operation.
  • C. Your key file is encrypted. You need to use the -u option for unencrypted not the -i option.
  • D. Your key file must not be publicly viewable for SSH to work. You need to modify your .pem file to limit permissions.

D. You need to run something like: chmod 400 my_key.pem

Reference:

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Q16: You have an EBS root device on /dev/sda1 on one of your EC2 instances. You are having trouble with this particular instance and you need to either Stop/Start, Reboot or Terminate the instance but you do NOT want to lose any data that you have stored on /dev/sda1. However, you are unsure if changing the instance state in any of the aforementioned ways will cause you to lose data stored on the EBS volume. Which of the below statements best describes the effect each change of instance state would have on the data you have stored on /dev/sda1?

  • A. Whether you stop/start, reboot or terminate the instance it does not matter because data on an EBS volume is not ephemeral and the data will not be lost regardless of what method is used.
  • B. If you stop/start the instance the data will not be lost. However if you either terminate or reboot the instance the data will be lost.
  • C. Whether you stop/start, reboot or terminate the instance it does not matter because data on an EBS volume is ephemeral and it will be lost no matter what method is used.
  • D. The data will be lost if you terminate the instance, however the data will remain on /dev/sda1 if you reboot or stop/start the instance because data on an EBS volume is not ephemeral.

D. The question states that an EBS-backed root device is mounted at /dev/sda1, and EBS volumes maintain information regardless of the instance state. If it was instance store, this would be a different answer.

Reference: AWS Root Device Storage

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Q17: EC2 instances are launched from Amazon Machine Images (AMIs). A given public AMI:

  • A. Can only be used to launch EC2 instances in the same AWS availability zone as the AMI is stored
  • B. Can only be used to launch EC2 instances in the same country as the AMI is stored
  • C. Can only be used to launch EC2 instances in the same AWS region as the AMI is stored
  • D. Can be used to launch EC2 instances in any AWS region

C. AMIs are only available in the region they are created. Even in the case of the AWS-provided AMIs, AWS has actually copied the AMIs for you to different regions. You cannot access an AMI from one region in another region. However, you can copy an AMI from one region to another

Reference: https://aws.amazon.com/amazon-linux-ami/

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Q18: Which of the following statements is true about the Elastic File System (EFS)?

  • A. EFS can scale out to meet capacity requirements and scale back down when no longer needed
  • B. EFS can be used by multiple EC2 instances simultaneously
  • C. EFS cannot be used by an instance using EBS
  • D. EFS can be configured on an instance before launch just like an IAM role or EBS volumes

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A. and B.

Reference: https://aws.amazon.com/efs/

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Q19: IAM Policies, at a minimum, contain what elements?

  • A. ID
  • B. Effects
  • C. Resources
  • D. Sid
  • E. Principle
  • F. Actions

B. C. and F.

Effect – Use Allow or Deny to indicate whether the policy allows or denies access.

Resource – Specify a list of resources to which the actions apply.

Action – Include a list of actions that the policy allows or denies.

Id, Sid aren’t required fields in IAM Policies. But they are optional fields

Reference: AWS IAM Access Policies

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Q20: What are the main benefits of IAM groups?

  • A. The ability to create custom permission policies.
  • B. Assigning IAM permission policies to more than one user at a time.
  • C. Easier user/policy management.
  • D. Allowing EC2 instances to gain access to S3.

B. and C.

A. is incorrect: This is a benefit of IAM generally or a benefit of IAM policies. But IAM groups don’t create policies, they have policies attached to them.

Reference: https://docs.aws.amazon.com/IAM/latest/UserGuide/id_groups.html

 

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Q21: What are benefits of using AWS STS?

  • A. Grant access to AWS resources without having to create an IAM identity for them
  • B. Since credentials are temporary, you don’t have to rotate or revoke them
  • C. Temporary security credentials can be extended indefinitely
  • D. Temporary security credentials can be restricted to a specific region

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Q22: What should the Developer enable on the DynamoDB table to optimize performance and minimize costs?

  • A. Amazon DynamoDB auto scaling
  • B. Amazon DynamoDB cross-region replication
  • C. Amazon DynamoDB Streams
  • D. Amazon DynamoDB Accelerator


D. DAX is a DynamoDB-compatible caching service that enables you to benefit from fast in-memory performance for demanding applications. DAX addresses three core scenarios:

  1. As an in-memory cache, DAX reduces the response times of eventually-consistent read workloads by an order of magnitude, from single-digit milliseconds to microseconds.
  2. DAX reduces operational and application complexity by providing a managed service that is API-compatible with Amazon DynamoDB, and thus requires only minimal functional changes to use with an existing application.
  3. For read-heavy or bursty workloads, DAX provides increased throughput and potential operational cost savings by reducing the need to over-provision read capacity units. This is especially beneficial for applications that require repeated reads for individual keys.

Reference: AWS DAX


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Q23: A Developer has been asked to create an AWS Elastic Beanstalk environment for a production web application which needs to handle thousands of requests. Currently the dev environment is running on a t1 micro instance. How can the Developer change the EC2 instance type to m4.large?

  • A. Use CloudFormation to migrate the Amazon EC2 instance type of the environment from t1 micro to m4.large.
  • B. Create a saved configuration file in Amazon S3 with the instance type as m4.large and use the same during environment creation.
  • C. Change the instance type to m4.large in the configuration details page of the Create New Environment page.
  • D. Change the instance type value for the environment to m4.large by using update autoscaling group CLI command.

B. The Elastic Beanstalk console and EB CLI set configuration options when you create an environment. You can also set configuration options in saved configurations and configuration files. If the same option is set in multiple locations, the value used is determined by the order of precedence.
Configuration option settings can be composed in text format and saved prior to environment creation, applied during environment creation using any supported client, and added, modified or removed after environment creation.
During environment creation, configuration options are applied from multiple sources with the following precedence, from highest to lowest:

  • Settings applied directly to the environment – Settings specified during a create environment or update environment operation on the Elastic Beanstalk API by any client, including the AWS Management Console, EB CLI, AWS CLI, and SDKs. The AWS Management Console and EB CLI also applyrecommended values for some options that apply at this level unless overridden.
  • Saved Configurations
    Settings for any options that are not applied directly to the
    environment are loaded from a saved configuration, if specified.
  • Configuration Files (.ebextensions)– Settings for any options that are not applied directly to the
    environment, and also not specified in a saved configuration, are loaded from configuration files in the .ebextensions folder at the root of the application source bundle.

     

    Configuration files are executed in alphabetical order. For example,.ebextensions/01run.configis executed before.ebextensions/02do.config.

  • Default Values– If a configuration option has a default value, it only applies when the option is not set at any of the above levels.

If the same configuration option is defined in more than one location, the setting with the highest precedence is applied. When a setting is applied from a saved configuration or settings applied directly to the environment, the setting is stored as part of the environment’s configuration. These settings can be removed with the AWS CLI or with the EB CLI
.
Settings in configuration files are not applied
directly to the environment and cannot be removed without modifying the configuration files and deploying a new application version.
If a setting applied with one of the other methods is removed, the same setting will be loaded from configuration files in the source bundle.

Reference: Managing ec2 features – Elastic beanstalk

Q24: What statements are true about Availability Zones (AZs) and Regions?

  • A. There is only one AZ in each AWS Region
  • B. AZs are geographically separated inside a region to help protect against natural disasters affecting more than one at a time.
  • C. AZs can be moved between AWS Regions based on your needs
  • D. There are (almost always) two or more AZs in each AWS Region

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B and D.

Reference: AWS global infrastructure/

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Q25: An AWS Region contains:

  • A. Edge Locations
  • B. Data Centers
  • C. AWS Services
  • D. Availability Zones


B. C. D. Edge locations are actually distinct locations that don’t explicitly fall within AWS regions.

Reference: AWS Global Infrastructure


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Q26: Which read request in DynamoDB returns a response with the most up-to-date data, reflecting the updates from all prior write operations that were successful?

  • A. Eventual Consistent Reads
  • B. Conditional reads for Consistency
  • C. Strongly Consistent Reads
  • D. Not possible


C. This is provided very clearly in the AWS documentation as shown below with regards to the read consistency for DynamoDB. Only in Strong Read consistency can you be guaranteed that you get the write read value after all the writes are completed.

Reference: https://aws.amazon.com/dynamodb/faqs/


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Q27: You’ ve been asked to move an existing development environment on the AWS Cloud. This environment consists mainly of Docker based containers. You need to ensure that minimum effort is taken during the migration process. Which of the following step would you consider for this requirement?

  • A. Create an Opswork stack and deploy the Docker containers
  • B. Create an application and Environment for the Docker containers in the Elastic Beanstalk service
  • C. Create an EC2 Instance. Install Docker and deploy the necessary containers.
  • D. Create an EC2 Instance. Install Docker and deploy the necessary containers. Add an Autoscaling Group for scalability of the containers.


B. The Elastic Beanstalk service is the ideal service to quickly provision development environments. You can also create environments which can be used to host Docker based containers.

Reference: Create and Deploy Docker in AWS


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Q28: You’ve written an application that uploads objects onto an S3 bucket. The size of the object varies between 200 – 500 MB. You’ve seen that the application sometimes takes a longer than expected time to upload the object. You want to improve the performance of the application. Which of the following would you consider?

  • A. Create multiple threads and upload the objects in the multiple threads
  • B. Write the items in batches for better performance
  • C. Use the Multipart upload API
  • D. Enable versioning on the Bucket

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C. All other options are invalid since the best way to handle large object uploads to the S3 service is to use the Multipart upload API. The Multipart upload API enables you to upload large objects in parts. You can use this API to upload new large objects or make a copy of an existing object. Multipart uploading is a three-step process: You initiate the upload, you upload the object parts, and after you have uploaded all the parts, you complete the multipart upload. Upon receiving the complete multipart upload request, Amazon S3 constructs the object from the uploaded parts, and you can then access the object just as you would any other object in your bucket.

Reference: https://docs.aws.amazon.com/AmazonS3/latest/dev/mpuoverview.html


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Q29: A security system monitors 600 cameras, saving image metadata every 1 minute to an Amazon DynamoDb table. Each sample involves 1kb of data, and the data writes are evenly distributed over time. How much write throughput is required for the target table?

  • A. 6000
  • B. 10
  • C. 3600
  • D. 600

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B. When you mention the write capacity of a table in Dynamo DB, you mention it as the number of 1KB writes per second. So in the above question, since the write is happening every minute, we need to divide the value of 600 by 60, to get the number of KB writes per second. This gives a value of 10.

You can specify the Write capacity in the Capacity tab of the DynamoDB table.

Reference: AWS working with tables

Q30: What two arguments does a Python Lambda handler function require?

  • A. invocation, zone
  • B. event, zone
  • C. invocation, context
  • D. event, context


D. event, context def handler_name(event, context):

return some_value
Reference: AWS Lambda Function Handler in Python

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Q31: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only via SFTP
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere


D. From a zip file in AWS S3 or uploaded directly from elsewhere
Reference: AWS Lambda Deployment Package

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Q32: A Lambda deployment package contains:

  • A. Function code, libraries, and runtime binaries
  • B. Only function code
  • C. Function code and libraries not included within the runtime
  • D. Only libraries not included within the runtime


C. Function code and libraries not included within the runtime
Reference: AWS Lambda Deployment Package in PowerShell

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Q33: You have instances inside private subnets and a properly configured bastion host instance in a public subnet. None of the instances in the private subnets have a public or Elastic IP address. How can you connect an instance in the private subnet to the open internet to download system updates?

  • A. Create and assign EIP to each instance
  • B. Create and attach a second IGW to the VPC.
  • C. Create and utilize a NAT Gateway
  • D. Connect to a VPN


C. You can use a network address translation (NAT) gateway in a public subnet in your VPC to enable instances in the private subnet to initiate outbound traffic to the Internet, but prevent the instances from receiving inbound traffic initiated by someone on the Internet.
Reference: AWS Network Address Translation Gateway

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Q34: What feature of VPC networking should you utilize if you want to create “elasticity” in your application’s architecture?

  • A. Security Groups
  • B. Route Tables
  • C. Elastic Load Balancer
  • D. Auto Scaling


D. Auto scaling is designed specifically with elasticity in mind. Auto scaling allows for the increase and decrease of compute power based on demand, thus creating elasticity in the architecture.
Reference: AWS Autoscalling

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Q30: Lambda allows you to upload code and dependencies for function packages:

  • A. Only from a directly uploaded zip file
  • B. Only from a directly uploaded zip file
  • C. Only from a zip file in AWS S3
  • D. From a zip file in AWS S3 or uploaded directly from elsewhere

Answer:


D. From a zip file in AWS S3 or uploaded directly from elsewhere
Reference: AWS Lambda

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Q31: An organization is using an Amazon ElastiCache cluster in front of their Amazon RDS instance. The organization would like the Developer to implement logic into the code so that the cluster only retrieves data from RDS when there is a cache miss. What strategy can the Developer implement to achieve this?

  • A. Lazy loading
  • B. Write-through
  • C. Error retries
  • D. Exponential backoff

Answer:


Answer – A
Whenever your application requests data, it first makes the request to the ElastiCache cache. If the data exists in the cache and is current, ElastiCache returns the data to your application. If the data does not exist in the cache, or the data in the cache has expired, your application requests data from your data store which returns the data to your application. Your application then writes the data received from the store to the cache so it can be more quickly retrieved next time it is requested. All other options are incorrect.
Reference: Caching Strategies

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Q32: A developer is writing an application that will run on Ec2 instances and read messages from SQS queue. The nessages will arrive every 15-60 seconds. How should the Developer efficiently query the queue for new messages?

  • A. Use long polling
  • B. Set a custom visibility timeout
  • C. Use short polling
  • D. Implement exponential backoff


Answer – A Long polling will help insure that the applications make less requests for messages in a shorter period of time. This is more cost effective. Since the messages are only going to be available after 15 seconds and we don’t know exacly when they would be available, it is better to use Long Polling.
Reference: Amazon SQS Long Polling

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Q33: You are using AWS SAM to define a Lambda function and configure CodeDeploy to manage deployment patterns. With new Lambda function working as per expectation which of the following will shift traffic from original Lambda function to new Lambda function in the shortest time frame?

  • A. Canary10Percent5Minutes
  • B. Linear10PercentEvery10Minutes
  • C. Canary10Percent15Minutes
  • D. Linear10PercentEvery1Minute


Answer – A
With Canary Deployment Preference type, Traffic is shifted in two intervals. With Canary10Percent5Minutes, 10 percent of traffic is shifted in the first interval while remaining all traffic is shifted after 5 minutes.
Reference: Gradual Code Deployment

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Q34: You are using AWS SAM templates to deploy a serverless application. Which of the following resource will embed application from Amazon S3 buckets?

  • A. AWS::Serverless::Api
  • B. AWS::Serverless::Application
  • C. AWS::Serverless::Layerversion
  • D. AWS::Serverless::Function


Answer – B
AWS::Serverless::Application resource in AWS SAm template is used to embed application frm Amazon S3 buckets.
Reference: Declaring Serverless Resources

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Q35: You are using AWS Envelope Encryption for encrypting all sensitive data. Which of the followings is True with regards to Envelope Encryption?

  • A. Data is encrypted be encrypting Data key which is further encrypted using encrypted Master Key.
  • B. Data is encrypted by plaintext Data key which is further encrypted using encrypted Master Key.
  • C. Data is encrypted by encrypted Data key which is further encrypted using plaintext Master Key.
  • D. Data is encrypted by plaintext Data key which is further encrypted using plaintext Master Key.


Answer – D
With Envelope Encryption, unencrypted data is encrypted using plaintext Data key. This Data is further encrypted using plaintext Master key. This plaintext Master key is securely stored in AWS KMS & known as Customer Master Keys.
Reference: AWS Key Management Service Concepts

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Q36: You are developing an application that will be comprised of the following architecture –

  1. A set of Ec2 instances to process the videos.
  2. These (Ec2 instances) will be spun up by an autoscaling group.
  3. SQS Queues to maintain the processing messages.
  4. There will be 2 pricing tiers.

How will you ensure that the premium customers videos are given more preference?

  • A. Create 2 Autoscaling Groups, one for normal and one for premium customers
  • B. Create 2 set of Ec2 Instances, one for normal and one for premium customers
  • C. Create 2 SQS queus, one for normal and one for premium customers
  • D. Create 2 Elastic Load Balancers, one for normal and one for premium customers.


Answer – C
The ideal option would be to create 2 SQS queues. Messages can then be processed by the application from the high priority queue first.<br? The other options are not the ideal options. They would lead to extra costs and also extra maintenance.
Reference: SQS

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Q37: You are developing an application that will interact with a DynamoDB table. The table is going to take in a lot of read and write operations. Which of the following would be the ideal partition key for the DynamoDB table to ensure ideal performance?

  • A. CustomerID
  • B. CustomerName
  • C. Location
  • D. Age


Answer- A
Use high-cardinality attributes. These are attributes that have distinct values for each item, like e-mailid, employee_no, customerid, sessionid, orderid, and so on..
Use composite attributes. Try to combine more than one attribute to form a unique key.
Reference: Choosing the right DynamoDB Partition Key

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Q38: A developer is making use of AWS services to develop an application. He has been asked to develop the application in a manner to compensate any network delays. Which of the following two mechanisms should he implement in the application?

  • A. Multiple SQS queues
  • B. Exponential backoff algorithm
  • C. Retries in your application code
  • D. Consider using the Java sdk.


Answer- B. and C.
In addition to simple retries, each AWS SDK implements exponential backoff algorithm for better flow control. The idea behind exponential backoff is to use progressively longer waits between retries for consecutive error responses. You should implement a maximum delay interval, as well as a maximum number of retries. The maximum delay interval and maximum number of retries are not necessarily fixed values, and should be set based on the operation being performed, as well as other local factors, such as network latency.
Reference: Error Retries and Exponential Backoff in AWS

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Q39: An application is being developed that is going to write data to a DynamoDB table. You have to setup the read and write throughput for the table. Data is going to be read at the rate of 300 items every 30 seconds. Each item is of size 6KB. The reads can be eventual consistent reads. What should be the read capacity that needs to be set on the table?

  • A. 10
  • B. 20
  • C. 6
  • D. 30


Answer – A

Since there are 300 items read every 30 seconds , that means there are (300/30) = 10 items read every second.
Since each item is 6KB in size , that means , 2 reads will be required for each item.
So we have total of 2*10 = 20 reads for the number of items per second
Since eventual consistency is required , we can divide the number of reads(20) by 2 , and in the end we get the Read Capacity of 10.

Reference: Read/Write Capacity Mode


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Q40: You are in charge of deploying an application that will be hosted on an EC2 Instance and sit behind an Elastic Load balancer. You have been requested to monitor the incoming connections to the Elastic Load Balancer. Which of the below options can suffice this requirement?

  • A. Use AWS CloudTrail with your load balancer
  • B. Enable access logs on the load balancer
  • C. Use a CloudWatch Logs Agent
  • D. Create a custom metric CloudWatch lter on your load balancer


Answer – B
Elastic Load Balancing provides access logs that capture detailed information about requests sent to your load balancer. Each log contains information such as the time the request was received, the client’s IP address, latencies, request paths, and server responses. You can use these access logs to analyze traffic patterns and troubleshoot issues.
Reference: Access Logs for Your Application Load Balancer

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Q41: A static web site has been hosted on a bucket and is now being accessed by users. One of the web pages javascript section has been changed to access data which is hosted in another S3 bucket. Now that same web page is no longer loading in the browser. Which of the following can help alleviate the error?

  • A. Enable versioning for the underlying S3 bucket.
  • B. Enable Replication so that the objects get replicated to the other bucket
  • C. Enable CORS for the bucket
  • D. Change the Bucket policy for the bucket to allow access from the other bucket


Answer – C

Cross-origin resource sharing (CORS) defines a way for client web applications that are loaded in one domain to interact with resources in a different domain. With CORS support, you can build rich client-side web applications with Amazon S3 and selectively allow cross-origin access to your Amazon S3 resources.

Cross-Origin Resource Sharing: Use-case Scenarios The following are example scenarios for using CORS:

Scenario 1: Suppose that you are hosting a website in an Amazon S3 bucket named website as described in Hosting a Static Website on Amazon S3. Your users load the website endpoint http://website.s3-website-us-east-1.amazonaws.com. Now you want to use JavaScript on the webpages that are stored in this bucket to be able to make authenticated GET and PUT requests against the same bucket by using the Amazon S3 API endpoint for the bucket, website.s3.amazonaws.com. A browser would normally block JavaScript from allowing those requests, but with CORS you can configure your bucket to explicitly enable cross-origin requests from website.s3-website-us-east-1.amazonaws.com.

Scenario 2: Suppose that you want to host a web font from your S3 bucket. Again, browsers require a CORS check (also called a preight check) for loading web fonts. You would configure the bucket that is hosting the web font to allow any origin to make these requests.

Reference: Cross-Origin Resource Sharing (CORS)


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Q42: Your mobile application includes a photo-sharing service that is expecting tens of thousands of users at launch. You will leverage Amazon Simple Storage Service (S3) for storage of the user Images, and you must decide how to authenticate and authorize your users for access to these images. You also need to manage the storage of these images. Which two of the following approaches should you use? Choose two answers from the options below

  • A. Create an Amazon S3 bucket per user, and use your application to generate the S3 URL for the appropriate content.
  • B. Use AWS Identity and Access Management (IAM) user accounts as your application-level user database, and offload the burden of authentication from your application code.
  • C. Authenticate your users at the application level, and use AWS Security Token Service (STS)to grant token-based authorization to S3 objects.
  • D. Authenticate your users at the application level, and send an SMS token message to the user. Create an Amazon S3 bucket with the same name as the SMS message token, and move the user’s objects to that bucket.


Answer- C
The AWS Security Token Service (STS) is a web service that enables you to request temporary, limited-privilege credentials for AWS Identity and Access Management (IAM) users or for users that you authenticate (federated users). The token can then be used to grant access to the objects in S3.
You can then provides access to the objects based on the key values generated via the user id.

Reference: The AWS Security Token Service (STS)


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Q43: Your current log analysis application takes more than four hours to generate a report of the top 10 users of your web application. You have been asked to implement a system that can report this information in real time, ensure that the report is always up to date, and handle increases in the number of requests to your web application. Choose the option that is cost-effective and can fulfill the requirements.

  • A. Publish your data to CloudWatch Logs, and congure your application to Autoscale to handle the load on demand.
  • B. Publish your log data to an Amazon S3 bucket.  Use AWS CloudFormation to create an Auto Scaling group to scale your post-processing application which is congured to pull down your log les stored an Amazon S3
  • C. Post your log data to an Amazon Kinesis data stream, and subscribe your log-processing application so that is congured to process your logging data.
  • D. Create a multi-AZ Amazon RDS MySQL cluster, post the logging data to MySQL, and run a map reduce job to retrieve the required information on user counts.

Answer:


Answer – C
Amazon Kinesis makes it easy to collect, process, and analyze real-time, streaming data so you can get timely insights and react quickly to new information. Amazon Kinesis offers key capabilities to cost effectively process streaming data at any scale, along with the flexibility to choose the tools that best suit the requirements of your application. With Amazon Kinesis, you can ingest real-time data such as application logs, website clickstreams, IoT telemetry data, and more into your databases, data lakes and data warehouses, or build your own real-time applications using this data.
Reference: Amazon Kinesis

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Q44: You’ve been instructed to develop a mobile application that will make use of AWS services. You need to decide on a data store to store the user sessions. Which of the following would be an ideal data store for session management?

  • A. AWS Simple Storage Service
  • B. AWS DynamoDB
  • C. AWS RDS
  • D. AWS Redshift

Answer:


Answer – B
DynamoDB is a alternative solution which can be used for storage of session management. The latency of access to data is less , hence this can be used as a data store for session management
Reference: Scalable Session Handling in PHP Using Amazon DynamoDB

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Q45: Your application currently interacts with a DynamoDB table. Records are inserted into the table via the application. There is now a requirement to ensure that whenever items are updated in the DynamoDB primary table , another record is inserted into a secondary table. Which of the below feature should be used when developing such a solution?

  • A. AWS DynamoDB Encryption
  • B. AWS DynamoDB Streams
  • C. AWS DynamoDB Accelerator
  • D. AWSTable Accelerator


Answer – B
DynamoDB Streams Use Cases and Design Patterns This post describes some common use cases you might encounter, along with their design options and solutions, when migrating data from relational data stores to Amazon DynamoDB. We will consider how to manage the following scenarios:

  • How do you set up a relationship across multiple tables in which, based on the value of an item from one table, you update the item in a second table?
  • How do you trigger an event based on a particular transaction?
  • How do you audit or archive transactions?
  • How do you replicate data across multiple tables (similar to that of materialized views/streams/replication in relational data stores)?

Relational databases provide native support for transactions, triggers, auditing, and replication. Typically, a transaction in a database refers to performing create, read, update, and delete (CRUD) operations against multiple tables in a block. A transaction can have only two states—success or failure. In other words, there is no partial completion. As a NoSQL database, DynamoDB is not designed to support transactions. Although client-side libraries are available to mimic the transaction capabilities, they are not scalable and cost-effective. For example, the Java Transaction Library for DynamoDB creates 7N+4 additional writes for every write operation. This is partly because the library holds metadata to manage the transactions to ensure that it’s consistent and can be rolled back before commit. You can use DynamoDB Streams to address all these use cases. DynamoDB Streams is a powerful service that you can combine with other AWS services to solve many similar problems. When enabled, DynamoDB Streams captures a time-ordered sequence of item-level modifications in a DynamoDB table and durably stores the information for up to 24 hours. Applications can access a series of stream records, which contain an item change, from a DynamoDB stream in near real time. AWS maintains separate endpoints for DynamoDB and DynamoDB Streams. To work with database tables and indexes, your application must access a DynamoDB endpoint. To read and process DynamoDB Streams records, your application must access a DynamoDB Streams endpoint in the same Region. All of the other options are incorrect since none of these would meet the core requirement.
Reference: DynamoDB Streams Use Cases and Design Patterns


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Q46: An application has been making use of AWS DynamoDB for its back-end data store. The size of the table has now grown to 20 GB , and the scans on the table are causing throttling errors. Which of the following should now be implemented to avoid such errors?

  • A. Large Page size
  • B. Reduced page size
  • C. Parallel Scans
  • D. Sequential scans

Answer – B
When you scan your table in Amazon DynamoDB, you should follow the DynamoDB best practices for avoiding sudden bursts of read activity. You can use the following technique to minimize the impact of a scan on a table’s provisioned throughput. Reduce page size Because a Scan operation reads an entire page (by default, 1 MB), you can reduce the impact of the scan operation by setting a smaller page size. The Scan operation provides a Limit parameter that you can use to set the page size for your request. Each Query or Scan request that has a smaller page size uses fewer read operations and creates a “pause” between each request. For example, suppose that each item is 4 KB and you set the page size to 40 items. A Query request would then consume only 20 eventually consistent read operations or 40 strongly consistent read operations. A larger number of smaller Query or Scan operations would allow your other critical requests to succeed without throttling.
Reference1: Rate-Limited Scans in Amazon DynamoDB

Reference2: Best Practices for Querying and Scanning Data


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Q47: Which of the following is correct way of passing a stage variable to an HTTP URL ? (Select TWO.)

  • A. http://example.com/${}/prod
  • B. http://example.com/${stageVariables.}/prod
  • C. http://${stageVariables.}.example.com/dev/operation
  • D. http://${stageVariables}.example.com/dev/operation
  • E. http://${}.example.com/dev/operation
  • F. http://example.com/${stageVariables}/prod


Answer – B. and C.
A stage variable can be used as part of HTTP integration URL as in following cases, ·         A full URI without protocol ·         A full domain ·         A subdomain ·         A path ·         A query string In the above case , option B & C displays stage variable as a path & sub-domain.
Reference: Amazon API Gateway Stage Variables Reference

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Q48: Your company is planning on creating new development environments in AWS. They want to make use of their existing Chef recipes which they use for their on-premise configuration for servers in AWS. Which of the following service would be ideal to use in this regard?

  • A. AWS Elastic Beanstalk
  • B. AWS OpsWork
  • C. AWS Cloudformation
  • D. AWS SQS


Answer – B
AWS OpsWorks is a configuration management service that provides managed instances of Chef and Puppet. Chef and Puppet are automation platforms that allow you to use code to automate the configurations of your servers. OpsWorks lets you use Chef and Puppet to automate how servers are configured, deployed, and managed across your Amazon EC2 instances or on-premises compute environments All other options are invalid since they cannot be used to work with Chef recipes for configuration management.
Reference: AWS OpsWorks

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Q49: Your company has developed a web application and is hosting it in an Amazon S3 bucket configured for static website hosting. The users can log in to this app using their Google/Facebook login accounts. The application is using the AWS SDK for JavaScript in the browser to access data stored in an Amazon DynamoDB table. How can you ensure that API keys for access to your data in DynamoDB are kept secure?

  • A. Create an Amazon S3 role in IAM with access to the specific DynamoDB tables, and assign it to the bucket hosting your website
  • B. Configure S3 bucket tags with your AWS access keys for your bucket hosing your website so that the application can query them for access.
  • C. Configure a web identity federation role within IAM to enable access to the correct DynamoDB resources and retrieve temporary credentials
  • D. Store AWS keys in global variables within your application and configure the application to use these credentials when making requests.


Answer – C
With web identity federation, you don’t need to create custom sign-in code or manage your own user identities. Instead, users of your app can sign in using a well-known identity provider (IdP) —such as Login with Amazon, Facebook, Google, or any other OpenID Connect (OIDC)-compatible IdP, receive an authentication token, and then exchange that token for temporary security credentials in AWS that map to an IAM role with permissions to use the resources in your AWS account. Using an IdP helps you keep your AWS account secure, because you don’t have to embed and distribute long-term security credentials with your application. Option A is invalid since Roles cannot be assigned to S3 buckets Options B and D are invalid since the AWS Access keys should not be used
Reference: About Web Identity Federation

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Q50: Your application currently makes use of AWS Cognito for managing user identities. You want to analyze the information that is stored in AWS Cognito for your application. Which of the following features of AWS Cognito should you use for this purpose?

  • A. Cognito Data
  • B. Cognito Events
  • C. Cognito Streams
  • D. Cognito Callbacks


Answer – C
Amazon Cognito Streams gives developers control and insight into their data stored in Amazon Cognito. Developers can now configure a Kinesis stream to receive events as data is updated and synchronized. Amazon Cognito can push each dataset change to a Kinesis stream you own in real time. All other options are invalid since you should use Cognito Streams
Reference:

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Q51: You’ve developed a set of scripts using AWS Lambda. These scripts need to access EC2 Instances in a VPC. Which of the following needs to be done to ensure that the AWS Lambda function can access the resources in the VPC. Choose 2 answers from the options given below

  • A. Ensure that the subnet ID’s are mentioned when conguring the Lambda function
  • B. Ensure that the NACL ID’s are mentioned when conguring the Lambda function
  • C. Ensure that the Security Group ID’s are mentioned when conguring the Lambda function
  • D. Ensure that the VPC Flow Log ID’s are mentioned when conguring the Lambda function


Answer: A and C.
AWS Lambda runs your function code securely within a VPC by default. However, to enable your Lambda function to access resources inside your private VPC, you must provide additional VPCspecific configuration information that includes VPC subnet IDs and security group IDs. AWS Lambda uses this information to set up elastic network interfaces (ENIs) that enable your function to connect securely to other resources within your private VPC.
Reference: Configuring a Lambda Function to Access Resources in an Amazon VPC

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Q52: You’ve currently been tasked to migrate an existing on-premise environment into Elastic Beanstalk. The application does not make use of Docker containers. You also can’t see any relevant environments in the beanstalk service that would be suitable to host your application. What should you consider doing in this case?

  • A. Migrate your application to using Docker containers and then migrate the app to the Elastic Beanstalk environment.
  • B. Consider using Cloudformation to deploy your environment to Elastic Beanstalk
  • C. Consider using Packer to create a custom platform
  • D. Consider deploying your application using the Elastic Container Service


Answer – C
Elastic Beanstalk supports custom platforms. A custom platform is a more advanced customization than a Custom Image in several ways. A custom platform lets you develop an entire new platform from scratch, customizing the operating system, additional software, and scripts that Elastic Beanstalk runs on platform instances. This flexibility allows you to build a platform for an application that uses a language or other infrastructure software, for which Elastic Beanstalk doesn’t provide a platform out of the box. Compare that to custom images, where you modify an AMI for use with an existing Elastic Beanstalk platform, and Elastic Beanstalk still provides the platform scripts and controls the platform’s software stack. In addition, with custom platforms you use an automated, scripted way to create and maintain your customization, whereas with custom images you make the changes manually over a running instance. To create a custom platform, you build an Amazon Machine Image (AMI) from one of the supported operating systems—Ubuntu, RHEL, or Amazon Linux (see the flavor entry in Platform.yaml File Format for the exact version numbers)—and add further customizations. You create your own Elastic Beanstalk platform using Packer, which is an open-source tool for creating machine images for many platforms, including AMIs for use with Amazon EC2. An Elastic Beanstalk platform comprises an AMI configured to run a set of software that supports an application, and metadata that can include custom configuration options and default configuration option settings.
Reference: AWS Elastic Beanstalk Custom Platforms

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Q53: Company B is writing 10 items to the Dynamo DB table every second. Each item is 15.5Kb in size. What would be the required provisioned write throughput for best performance? Choose the correct answer from the options below.

  • A. 10
  • B. 160
  • C. 155
  • D. 16


Answer – B.
Company B is writing 10 items to the Dynamo DB table every second. Each item is 15.5Kb in size. What would be the required provisioned write throughput for best performance? Choose the correct answer from the options below.
Reference: Read/Write Capacity Mode

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Q54: Which AWS Service can be used to automatically install your application code onto EC2, on premises systems and Lambda?

  • A. CodeCommit
  • B. X-Ray
  • C. CodeBuild
  • D. CodeDeploy


Answer: D

Reference: AWS CodeDeploy


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Q55: Which AWS service can be used to compile source code, run tests and package code?

  • A. CodePipeline
  • B. CodeCommit
  • C. CodeBuild
  • D. CodeDeploy


Answer: D

Reference: AWS CodeDeploy Answer: B.

Reference: AWS CodeBuild


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Q56: How can your prevent CloudFormation from deleting your entire stack on failure? (Choose 2)

  • A. Set the Rollback on failure radio button to No in the CloudFormation console
  • B. Set Termination Protection to Enabled in the CloudFormation console
  • C. Use the –disable-rollback flag with the AWS CLI
  • D. Use the –enable-termination-protection protection flag with the AWS CLI

Answer: A. and C.

Reference: Protecting a Stack From Being Deleted

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Q57: Which of the following practices allows multiple developers working on the same application to merge code changes frequently, without impacting each other and enables the identification of bugs early on in the release process?

  • A. Continuous Integration
  • B. Continuous Deployment
  • C. Continuous Delivery
  • D. Continuous Development

Answer: A

Reference: What is Continuous Integration?

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Q58: When deploying application code to EC2, the AppSpec file can be written in which language?

  • A. JSON
  • B. JSON or YAML
  • C. XML
  • D. YAML

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Q59: Part of your CloudFormation deployment fails due to a mis-configuration, by defaukt what will happen?

  • A. CloudFormation will rollback only the failed components
  • B. CloudFormation will rollback the entire stack
  • C. Failed component will remain available for debugging purposes
  • D. CloudFormation will ask you if you want to continue with the deployment

Answer: B

Reference: Troubleshooting AWS CloudFormation


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Q60: You want to receive an email whenever a user pushes code to CodeCommit repository, how can you configure this?

  • A. Create a new SNS topic and configure it to poll for CodeCommit eveents. Ask all users to subscribe to the topic to receive notifications
  • B. Configure a CloudWatch Events rule to send a message to SES which will trigger an email to be sent whenever a user pushes code to the repository.
  • C. Configure Notifications in the console, this will create a CloudWatch events rule to send a notification to a SNS topic which will trigger an email to be sent to the user.
  • D. Configure a CloudWatch Events rule to send a message to SQS which will trigger an email to be sent whenever a user pushes code to the repository.

Answer: C

Reference: Getting Started with Amazon SNS


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Q61: Which AWS service can be used to centrally store and version control your application source code, binaries and libraries

  • A. CodeCommit
  • B. CodeBuild
  • C. CodePipeline
  • D. ElasticFileSystem

Answer: A

Reference: AWS CodeCommit


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Q62: You are using CloudFormation to create a new S3 bucket, which of the following sections would you use to define the properties of your bucket?

  • A. Conditions
  • B. Parameters
  • C. Outputs
  • D. Resources

Answer: D

Reference: Resources


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Q63: You are deploying a number of EC2 and RDS instances using CloudFormation. Which section of the CloudFormation template would you use to define these?

  • A. Transforms
  • B. Outputs
  • C. Resources
  • D. Instances

Answer: C.
The Resources section defines your resources you are provisioning. Outputs is used to output user defines data relating to the reources you have built and can also used as input to another CloudFormation stack. Transforms is used to reference code located in S3.
Reference: Resources

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Q64: Which AWS service can be used to fully automate your entire release process?

  • A. CodeDeploy
  • B. CodePipeline
  • C. CodeCommit
  • D. CodeBuild

Answer: B.
AWS CodePipeline is a fully managed continuous delivery service that helps you automate your release pipelines for fast and reliable application and infrastructure updates

Reference: AWS CodePipeline


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Q65: You want to use the output of your CloudFormation stack as input to another CloudFormation stack. Which sections of the CloudFormation template would you use to help you configure this?

  • A. Outputs
  • B. Transforms
  • C. Resources
  • D. Exports

Answer: A.
Outputs is used to output user defines data relating to the reources you have built and can also used as input to another CloudFormation stack.
Reference: CloudFormation Outputs

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Q66: You have some code located in an S3 bucket that you want to reference in your CloudFormation template. Which section of the template can you use to define this?

  • A. Inputs
  • B. Resources
  • C. Transforms
  • D. Files

Answer: C.
Transforms is used to reference code located in S3 and also specififying the use of the Serverless Application Model (SAM) for Lambda deployments.
Reference: Transforms

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Q67: You are deploying an application to a number of Ec2 instances using CodeDeploy. What is the name of the file
used to specify source files and lifecycle hooks?

  • A. buildspec.yml
  • B. appspec.json
  • C. appspec.yml
  • D. buildspec.json

Answer: C.

Reference: CodeDeploy AppSpec File Reference

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Q68: Which of the following approaches allows you to re-use pieces of CloudFormation code in multiple templates, for common use cases like provisioning a load balancer or web server?

  • A. Share the code using an EBS volume
  • B. Copy and paste the code into the template each time you need to use it
  • C. Use a cloudformation nested stack
  • D. Store the code you want to re-use in an AMI and reference the AMI from within your CloudFormation template.

Answer: C.

Reference: Working with Nested Stacks

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Q69: In the CodeDeploy AppSpec file, what are hooks used for?

  • A. To reference AWS resources that will be used during the deployment
  • B. Hooks are reserved for future use
  • C. To specify files you want to copy during the deployment.
  • D. To specify, scripts or function that you want to run at set points in the deployment lifecycle

Answer: D.
The ‘hooks’ section for an EC2/On-Premises deployment contains mappings that link deployment lifecycle event hooks to one or more scripts.

Reference: AppSpec ‘hooks’ Section

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Q70: Which command can you use to encrypt a plain text file using CMK?

  • A. aws kms-encrypt
  • B. aws iam encrypt
  • C. aws kms encrypt
  • D. aws encrypt

Answer: C.
aws kms encrypt –key-id 1234abcd-12ab-34cd-56ef-1234567890ab –plaintext fileb://ExamplePlaintextFile –output text –query CiphertextBlob > C:\Temp\ExampleEncryptedFile.base64

Reference: AWS CLI Encrypt

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Q72: Which of the following is an encrypted key used by KMS to encrypt your data

  • A. Custmoer Mamaged Key
  • B. Encryption Key
  • C. Envelope Key
  • D. Customer Master Key

Answer: C.
Your Data key also known as the Enveloppe key is encrypted using the master key.This approach is known as Envelope encryption.
Envelope encryption is the practice of encrypting plaintext data with a data key, and then encrypting the data key under another key.

Reference: Envelope Encryption

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Q73: Which of the following statements are correct? (Choose 2)

  • A. The Customer Master Key is used to encrypt and decrypt the Envelope Key or Data Key
  • B. The Envelope Key or Data Key is used to encrypt and decrypt plain text files.
  • C. The envelope Key or Data Key is used to encrypt and decrypt the Customer Master Key.
  • D. The Customer MasterKey is used to encrypt and decrypt plain text files.

Answer: A. and B.

Reference: AWS Key Management Service Concepts

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Q74: Which of the following statements is correct in relation to kMS/ (Choose 2)

  • A. KMS Encryption keys are regional
  • B. You cannot export your customer master key
  • C. You can export your customer master key.
  • D. KMS encryption Keys are global

Answer: A. and B.

Reference: AWS Key Management Service FAQs

Q75:  A developer is preparing a deployment package for a Java implementation of an AWS Lambda function. What should the developer include in the deployment package? (Select TWO.)
A. Compiled application code
B. Java runtime environment
C. References to the event sources
D. Lambda execution role
E. Application dependencies


Answer: C. E.
Notes: To create a Lambda function, you first create a Lambda function deployment package. This package is a .zip or .jar file consisting of your code and any dependencies.
Reference: Lambda deployment packages.

Q76: A developer uses AWS CodeDeploy to deploy a Python application to a fleet of Amazon EC2 instances that run behind an Application Load Balancer. The instances run in an Amazon EC2 Auto Scaling group across multiple Availability Zones. What should the developer include in the CodeDeploy deployment package?
A. A launch template for the Amazon EC2 Auto Scaling group
B. A CodeDeploy AppSpec file
C. An EC2 role that grants the application access to AWS services
D. An IAM policy that grants the application access to AWS services


Answer: B.
Notes: The CodeDeploy AppSpec (application specific) file is unique to CodeDeploy. The AppSpec file is used to manage each deployment as a series of lifecycle event hooks, which are defined in the file.
Reference: CodeDeploy application specification (AppSpec) files.
Category: Deployment

Q76: A company is working on a project to enhance its serverless application development process. The company hosts applications on AWS Lambda. The development team regularly updates the Lambda code and wants to use stable code in production. Which combination of steps should the development team take to configure Lambda functions to meet both development and production requirements? (Select TWO.)

A. Create a new Lambda version every time a new code release needs testing.
B. Create two Lambda function aliases. Name one as Production and the other as Development. Point the Production alias to a production-ready unqualified Amazon Resource Name (ARN) version. Point the Development alias to the $LATEST version.
C. Create two Lambda function aliases. Name one as Production and the other as Development. Point the Production alias to the production-ready qualified Amazon Resource Name (ARN) version. Point the Development alias to the variable LAMBDA_TASK_ROOT.
D. Create a new Lambda layer every time a new code release needs testing.
E. Create two Lambda function aliases. Name one as Production and the other as Development. Point the Production alias to a production-ready Lambda layer Amazon Resource Name (ARN). Point the Development alias to the $LATEST layer ARN.


Answer: A. B.
Notes: Lambda function versions are designed to manage deployment of functions. They can be used for code changes, without affecting the stable production version of the code. By creating separate aliases for Production and Development, systems can initiate the correct alias as needed. A Lambda function alias can be used to point to a specific Lambda function version. Using the functionality to update an alias and its linked version, the development team can update the required version as needed. The $LATEST version is the newest published version.
Reference: Lambda function versions.

For more information about Lambda layers, see Creating and sharing Lambda layers.

For more information about Lambda function aliases, see Lambda function aliases.

Category: Deployment

Q77: Each time a developer publishes a new version of an AWS Lambda function, all the dependent event source mappings need to be updated with the reference to the new version’s Amazon Resource Name (ARN). These updates are time consuming and error-prone. Which combination of actions should the developer take to avoid performing these updates when publishing a new Lambda version? (Select TWO.)
A. Update event source mappings with the ARN of the Lambda layer.
B. Point a Lambda alias to a new version of the Lambda function.
C. Create a Lambda alias for each published version of the Lambda function.
D. Point a Lambda alias to a new Lambda function alias.
E. Update the event source mappings with the Lambda alias ARN.


Answer: B. E.
Notes: A Lambda alias is a pointer to a specific Lambda function version. Instead of using ARNs for the Lambda function in event source mappings, you can use an alias ARN. You do not need to update your event source mappings when you promote a new version or roll back to a previous version.
Reference: Lambda function aliases.
Category: Deployment

Q78:  A company wants to store sensitive user data in Amazon S3 and encrypt this data at rest. The company must manage the encryption keys and use Amazon S3 to perform the encryption. How can a developer meet these requirements?
A. Enable default encryption for the S3 bucket by using the option for server-side encryption with customer-provided encryption keys (SSE-C).
B. Enable client-side encryption with an encryption key. Upload the encrypted object to the S3 bucket.
C. Enable server-side encryption with Amazon S3 managed encryption keys (SSE-S3). Upload an object to the S3 bucket.
D. Enable server-side encryption with customer-provided encryption keys (SSE-C). Upload an object to the S3 bucket.


Answer: D.
Notes: When you upload an object, Amazon S3 uses the encryption key you provide to apply AES-256 encryption to your data and removes the encryption key from memory.
Reference: Protecting data using server-side encryption with customer-provided encryption keys (SSE-C).

Category: Security

Q79: A company is developing a Python application that submits data to an Amazon DynamoDB table. The company requires client-side encryption of specific data items and end-to-end protection for the encrypted data in transit and at rest. Which combination of steps will meet the requirement for the encryption of specific data items? (Select TWO.)

A. Generate symmetric encryption keys with AWS Key Management Service (AWS KMS).
B. Generate asymmetric encryption keys with AWS Key Management Service (AWS KMS).
C. Use generated keys with the DynamoDB Encryption Client.
D. Use generated keys to configure DynamoDB table encryption with AWS managed customer master keys (CMKs).
E. Use generated keys to configure DynamoDB table encryption with AWS owned customer master keys (CMKs).


Answer: A. C.
Notes: When the DynamoDB Encryption Client is configured to use AWS KMS, it uses a customer master key (CMK) that is always encrypted when used outside of AWS KMS. This cryptographic materials provider returns a unique encryption key and signing key for every table item. This method of encryption uses a symmetric CMK.
Reference: Direct KMS Materials Provider.
Category: Deployment

Q80: A company is developing a REST API with Amazon API Gateway. Access to the API should be limited to users in the existing Amazon Cognito user pool. Which combination of steps should a developer perform to secure the API? (Select TWO.)
A. Create an AWS Lambda authorizer for the API.
B. Create an Amazon Cognito authorizer for the API.
C. Configure the authorizer for the API resource.
D. Configure the API methods to use the authorizer.
E. Configure the authorizer for the API stage.


Answer: B. D.
Notes: An Amazon Cognito authorizer should be used for integration with Amazon Cognito user pools. In addition to creating an authorizer, you are required to configure an API method to use that authorizer for the API.
Reference: Control access to a REST API using Amazon Cognito user pools as authorizer.
Category: Security

Q81: A developer is implementing a mobile app to provide personalized services to app users. The application code makes calls to Amazon S3 and Amazon Simple Queue Service (Amazon SQS). Which options can the developer use to authenticate the app users? (Select TWO.)
A. Authenticate to the Amazon Cognito identity pool directly.
B. Authenticate to AWS Identity and Access Management (IAM) directly.
C. Authenticate to the Amazon Cognito user pool directly.
D. Federate authentication by using Login with Amazon with the users managed with AWS Security Token Service (AWS STS).
E. Federate authentication by using Login with Amazon with the users managed with the Amazon Cognito user pool.


Answer: C. E.
Notes: The Amazon Cognito user pool provides direct user authentication. The Amazon Cognito user pool provides a federated authentication option with third-party identity provider (IdP), including amazon.com.
Reference: Adding User Pool Sign-in Through a Third Party.
Category: Security

 
 

Q82: A company is implementing several order processing workflows. Each workflow is implemented by using AWS Lambda functions for each task. Which combination of steps should a developer follow to implement these workflows? (Select TWO.)
A. Define a AWS Step Functions task for each Lambda function.
B. Define a AWS Step Functions task for each workflow.
C. Write code that polls the AWS Step Functions invocation to coordinate each workflow.
D. Define an AWS Step Functions state machine for each workflow.
E. Define an AWS Step Functions state machine for each Lambda function.


Answer: A. D.
Notes: Step Functions is based on state machines and tasks. A state machine is a workflow. Tasks perform work by coordinating with other AWS services, such as Lambda. A state machine is a workflow. It can be used to express a workflow as a number of states, their relationships, and their input and output. You can coordinate individual tasks with Step Functions by expressing your workflow as a finite state machine, written in the Amazon States Language.
Reference: Getting Started with AWS Step Functions.

Category: Development

Q83: A company is migrating a web service to the AWS Cloud. The web service accepts requests by using HTTP (port 80). The company wants to use an AWS Lambda function to process HTTP requests. Which application design will satisfy these requirements?
A. Create an Amazon API Gateway API. Configure proxy integration with the Lambda function.
B. Create an Amazon API Gateway API. Configure non-proxy integration with the Lambda function.
C. Configure the Lambda function to listen to inbound network connections on port 80.
D. Configure the Lambda function as a target in the Application Load Balancer target group.


Answer: D.
Notes: Elastic Load Balancing supports Lambda functions as a target for an Application Load Balancer. You can use load balancer rules to route HTTP requests to a function, based on the path or the header values. Then, process the request and return an HTTP response from your Lambda function.
Reference: Using AWS Lambda with an Application Load Balancer.
Category: Development

Q84: A company is developing an image processing application. When an image is uploaded to an Amazon S3 bucket, a number of independent and separate services must be invoked to process the image. The services do not have to be available immediately, but they must process every image. Which application design satisfies these requirements?
A. Configure an Amazon S3 event notification that publishes to an Amazon Simple Queue Service (Amazon SQS) queue. Each service pulls the message from the same queue.
B. Configure an Amazon S3 event notification that publishes to an Amazon Simple Notification Service (Amazon SNS) topic. Each service subscribes to the same topic.
C. Configure an Amazon S3 event notification that publishes to an Amazon Simple Queue Service (Amazon SQS) queue. Subscribe a separate Amazon Simple Notification Service (Amazon SNS) topic for each service to an Amazon SQS queue.
D. Configure an Amazon S3 event notification that publishes to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe a separate Simple Queue Service (Amazon SQS) queue for each service to the Amazon SNS topic.


Answer: D.
Notes: Each service can subscribe to an individual Amazon SQS queue, which receives an event notification from the Amazon SNS topic. This is a fanout architectural implementation.
Reference: Common Amazon SNS scenarios.
Category: Development

Q85: A developer wants to implement Amazon EC2 Auto Scaling for a Multi-AZ web application. However, the developer is concerned that user sessions will be lost during scale-in events. How can the developer store the session state and share it across the EC2 instances?
A. Write the sessions to an Amazon Kinesis data stream. Configure the application to poll the stream.
B. Publish the sessions to an Amazon Simple Notification Service (Amazon SNS) topic. Subscribe each instance in the group to the topic.
C. Store the sessions in an Amazon ElastiCache for Memcached cluster. Configure the application to use the Memcached API.
D. Write the sessions to an Amazon Elastic Block Store (Amazon EBS) volume. Mount the volume to each instance in the group.


Answer: C.
Notes: ElastiCache for Memcached is a distributed in-memory data store or cache environment in the cloud. It will meet the developer’s requirement of persistent storage and is fast to access.
Reference: What is Amazon ElastiCache for Memcached?

Category: Development

 
 
 

Q86: A developer is integrating a legacy web application that runs on a fleet of Amazon EC2 instances with an Amazon DynamoDB table. There is no AWS SDK for the programming language that was used to implement the web application. Which combination of steps should the developer perform to make an API call to Amazon DynamoDB from the instances? (Select TWO.)
A. Make an HTTPS POST request to the DynamoDB API endpoint for the AWS Region. In the request body, include an XML document that contains the request attributes.
B. Make an HTTPS POST request to the DynamoDB API endpoint for the AWS Region. In the request body, include a JSON document that contains the request attributes.
C. Sign the requests by using AWS access keys and Signature Version 4.
D. Use an EC2 SSH key to calculate Signature Version 4 of the request.
E. Provide the signature value through the HTTP X-API-Key header.


Answer: B. C.
Notes: The HTTPS-based low-level AWS API for DynamoDB uses JSON as a wire protocol format. When you send HTTP requests to AWS, you sign the requests so that AWS can identify who sent them. Requests are signed with your AWS access key, which consists of an access key ID and secret access key. AWS supports two signature versions: Signature Version 4 and Signature Version 2. AWS recommends the use of Signature Version 4.
Reference: Signing AWS API requests.
Category: Development

Q87: A developer has written several custom applications that read and write to the same Amazon DynamoDB table. Each time the data in the DynamoDB table is modified, this change should be sent to an external API. Which combination of steps should the developer perform to accomplish this task? (Select TWO.)
A. Configure an AWS Lambda function to poll the stream and call the external API.
B. Configure an event in Amazon EventBridge (Amazon CloudWatch Events) that publishes the change to an Amazon Managed Streaming for Apache Kafka (Amazon MSK) data stream.
C. Create a trigger in the DynamoDB table to publish the change to an Amazon Kinesis data stream.
D. Deliver the stream to an Amazon Simple Notification Service (Amazon SNS) topic and subscribe the API to the topic.
E. Enable DynamoDB Streams on the table.


Answer: A. E.
Notes: If you enable DynamoDB Streams on a table, you can associate the stream Amazon Resource Name (ARN) with an Lambda function that you write. Immediately after an item in the table is modified, a new record appears in the table’s stream. Lambda polls the stream and invokes your Lambda function synchronously when it detects new stream records. You can enable DynamoDB Streams on a table to create an event that invokes an AWS Lambda function.
Reference: Tutorial: Process New Items with DynamoDB Streams and Lambda.
Category: Monitoring

 
 
 

Q88: A company is migrating the create, read, update, and delete (CRUD) functionality of an existing Java web application to AWS Lambda. Which minimal code refactoring is necessary for the CRUD operations to run in the Lambda function?
A. Implement a Lambda handler function.
B. Import an AWS X-Ray package.
C. Rewrite the application code in Python.
D. Add a reference to the Lambda execution role.


Answer: A.
Notes: Every Lambda function needs a Lambda-specific handler. Specifics of authoring vary between runtimes, but all runtimes share a common programming model that defines the interface between your code and the runtime code. You tell the runtime which method to run by defining a handler in the function configuration. The runtime runs that method. Next, the runtime passes in objects to the handler that contain the invocation event and context, such as the function name and request ID.
Reference: Getting started with Lambda.
Category: Refactoring

Top

Q89: A company plans to use AWS log monitoring services to monitor an application that runs on premises. Currently, the application runs on a recent version of Ubuntu Server and outputs the logs to a local file. Which combination of steps should a developer perform to accomplish this goal? (Select TWO.)
A. Update the application code to include calls to the agent API for log collection.
B. Install the Amazon Elastic Container Service (Amazon ECS) container agent on the server.
C. Install the unified Amazon CloudWatch agent on the server.
D. Configure the long-term AWS credentials on the server to enable log collection by the agent.
E. Attach an IAM role to the server to enable log collection by the agent.


Answer: C. D.
Notes: The unified CloudWatch agent needs to be installed on the server. Ubuntu Server 18.04 is one of the many supported operating systems. When you install the unified CloudWatch agent on an on-premises server, you will specify a named profile that contains the credentials of the IAM user.
Reference: Collecting metrics and logs from Amazon EC2 instances and on-premises servers with the CloudWatch agent.
Category: Monitoring

Q90: A developer wants to monitor invocations of an AWS Lambda function by using Amazon CloudWatch Logs. The developer added a number of print statements to the function code that write the logging information to the stdout stream. After running the function, the developer does not see any log data being generated. Why does the log data NOT appear in the CloudWatch logs?
A. The log data is not written to the stderr stream.
B. Lambda function logging is not automatically enabled.
C. The execution role for the Lambda function did not grant permissions to write log data to CloudWatch Logs.
D. The Lambda function outputs the logs to an Amazon S3 bucket.


Answer: C.
Notes: The function needs permission to call CloudWatch Logs. Update the execution role to grant the permission. You can use the managed policy of AWSLambdaBasicExecutionRole.
Reference: Troubleshoot execution issues in Lambda.
Category: Monitoting

Top

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

AWS Certified Developer Associate exam: Whitepapers

AWS has provided whitepapers to help you understand the technical concepts. Below are the recommended whitepapers for the AWS Certified Developer – Associate Exam.

Top

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

Online Training and Labs for AWS Certified Developer Associates Exam

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

Top

AWS Developer Associates Jobs

Top

AWS Certified Developer-Associate Exam info and details, How To:

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 
 

The AWS Certified Developer Associate exam is a multiple choice, multiple answer exam. Here is the Exam Overview:

  • Certification Name: AWS Certified Developer Associate.
  • Prerequisites for the Exam: None.
  • Exam Pattern: Multiple Choice Questions
  • The AWS Certified Developer-Associate Examination (DVA-C01) is a pass or fail exam. The examination is scored against a minimum standard established by AWS professionals guided by certification industry best practices and guidelines.
  • Your results for the examination are reported as a score from 100 – 1000, with a minimum passing score of 720.
  • Exam fees: US $150
  • Exam Guide on AWS Website
  • Available languages for tests: English, Japanese, Korean, Simplified Chinese
  • Read AWS whitepapers
  • Register for certification account here.
  • Prepare for Certification Here
  • Exam Content Outline

    Domain % of Examination
    Domain 1: Deployment (22%)
    1.1 Deploy written code in AWS using existing CI/CD pipelines, processes, and patterns.
    1.2 Deploy applications using Elastic Beanstalk.
    1.3 Prepare the application deployment package to be deployed to AWS.
    1.4 Deploy serverless applications
    22%
    Domain 2: Security (26%)
    2.1 Make authenticated calls to AWS services.
    2.2 Implement encryption using AWS services.
    2.3 Implement application authentication and authorization.
    26%
    Domain 3: Development with AWS Services (30%)
    3.1 Write code for serverless applications.
    3.2 Translate functional requirements into application design.
    3.3 Implement application design into application code.
    3.4 Write code that interacts with AWS services by using APIs, SDKs, and AWS CLI.
    30%
    Domain 4: Refactoring
    4.1 Optimize application to best use AWS services and features.
    4.2 Migrate existing application code to run on AWS.
    10%
    Domain 5: Monitoring and Troubleshooting (10%)
    5.1 Write code that can be monitored.
    5.2 Perform root cause analysis on faults found in testing or production.
    10%
    TOTAL 100%

Top

AWS Certified Developer Associate exam: Additional Information for reference

Below are some useful reference links that would help you to learn about AWS Certified Developer Associate Exam.

Top

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

Other Relevant and Recommended AWS Certifications

AWS Certification Exams Roadmap
AWS Certification Exams Roadmap

Top

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 
 

Top

Other AWS Facts and Summaries and Questions/Answers Dump

Top

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

AWS Certified Developer Associate exam: Whitepapers

AWS has provided whitepapers to help you understand the technical concepts. Below are the recommended whitepapers for the AWS Certified Developer – Associate Exam.

Top

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

Online Training and Labs for AWS Certified Developer Associates Exam

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

Top

AWS Developer Associates Jobs

Top

AWS Certified Developer-Associate Exam info and details, How To:

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 
 

The AWS Certified Developer Associate exam is a multiple choice, multiple answer exam. Here is the Exam Overview:

  • Certification Name: AWS Certified Developer Associate.
  • Prerequisites for the Exam: None.
  • Exam Pattern: Multiple Choice Questions
  • The AWS Certified Developer-Associate Examination (DVA-C01) is a pass or fail exam. The examination is scored against a minimum standard established by AWS professionals guided by certification industry best practices and guidelines.
  • Your results for the examination are reported as a score from 100 – 1000, with a minimum passing score of 720.
  • Exam fees: US $150
  • Exam Guide on AWS Website
  • Available languages for tests: English, Japanese, Korean, Simplified Chinese
  • Read AWS whitepapers
  • Register for certification account here.
  • Prepare for Certification Here
  • Exam Content Outline

    Domain % of Examination
    Domain 1: Deployment (22%)
    1.1 Deploy written code in AWS using existing CI/CD pipelines, processes, and patterns.
    1.2 Deploy applications using Elastic Beanstalk.
    1.3 Prepare the application deployment package to be deployed to AWS.
    1.4 Deploy serverless applications
    22%
    Domain 2: Security (26%)
    2.1 Make authenticated calls to AWS services.
    2.2 Implement encryption using AWS services.
    2.3 Implement application authentication and authorization.
    26%
    Domain 3: Development with AWS Services (30%)
    3.1 Write code for serverless applications.
    3.2 Translate functional requirements into application design.
    3.3 Implement application design into application code.
    3.4 Write code that interacts with AWS services by using APIs, SDKs, and AWS CLI.
    30%
    Domain 4: Refactoring
    4.1 Optimize application to best use AWS services and features.
    4.2 Migrate existing application code to run on AWS.
    10%
    Domain 5: Monitoring and Troubleshooting (10%)
    5.1 Write code that can be monitored.
    5.2 Perform root cause analysis on faults found in testing or production.
    10%
    TOTAL 100%

Top

AWS Certified Developer Associate exam: Additional Information for reference

Below are some useful reference links that would help you to learn about AWS Certified Developer Associate Exam.

Top

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 

Other Relevant and Recommended AWS Certifications

AWS Certification Exams Roadmap
AWS Certification Exams Roadmap

Top

The Cloud is the future: Get Certified now.
The AWS Certified Solution Architect Average Salary is: US $149,446/year. Get Certified with the App below:

 
#AWS #Developer #AWSCloud #DVAC01 #AWSDeveloper #AWSDev #Djamgatech
 
 
 
 
 
 

Top

Other AWS Facts and Summaries and Questions/Answers Dump

AWS Developer Associate DVA-C01 Exam Prep

 
 
 

AWS Breaking News and Top Stories

  • Is there a way to troubleshoot my DNS records on route 53?
    by /u/tomacdmota

    Hey guys, So I transferred my domain from Namecheap to route 53 yesterday. I have a web app hosted with Amplify. I am trying to connect the domain to it but for some reason, I am getting stuck on the "SSL configuration" bit. Now, from my understanding, it automatically adds the CNAME record required for this verification to happen. I have checked on route 53 and the record has indeed been created and is there. However, when I use something like https://www.whatsmydns.net/#CNAME/www.trustmotores.com (that is the domain and record in question), it fails in every place in the world. I have read the documentation but couldn't find anything on this. The record is created but isn't working? ​ ​ My guess yesterday was that since I had just transferred the domain, I needed to wait for it to propagate, but has been over 14h and still nothing. ​ Any guesses?Thank you. https://preview.redd.it/v7q4wobkzd091.png?width=2716&format=png&auto=webp&s=eb941eabfe69399ee95d7c7bb60c4a2b4d7c1034 https://preview.redd.it/70jairbkzd091.png?width=2880&format=png&auto=webp&s=a9ed1f280eca5bac029c4c7cbc56e9c4292f12ac submitted by /u/tomacdmota [link] [comments]

  • Aurora Serverless v2 in Production?
    by /u/Mpjhorner

    Is anyone using this at scale in production without issues? We are testing it at the moment with a production database and get random spikes stuck at 100% then it hangs and begins giving connections issues. As well as that we also get random drops outs. All of this same work load was running on a X-Large RDS instance prior with no issues. Support always saying this small issues etc. however I get the feeling it isn’t production ready. I know it’s new but it was pre-release for ages, hence giving it a try. What is your experience so far? submitted by /u/Mpjhorner [link] [comments]

  • How can I federate users to AWS (SSO?) using LDAP or SCIM and then locking down CLI access with AWS-based MFA?
    by /u/xrscx

    I have been doing some research and talking to support but I'm not exactly figuring out the solution for my use case. I want to federate users to AWS to be used across our AWS Org (AWS SSO?) via either LDAP or SCIM. However, we want to control MFA on the AWS side. That is, the federated user has MFA assigned inside of AWS and that they are not redirected to the IdP for MFA challenges. Largely, this is to put MFA on CLI access. Due to some factors of our environment, we cannot enforce MFA from there (to AWS CLI, at least). Any ideas on how to achieve this or if it is possible? Again, federate users to AWS and then enforce MFA on the user profiles that now live in AWS. Cost is a major factor as well. submitted by /u/xrscx [link] [comments]

  • Hot Off the Presses: Red Hat Enterprise Linux 9
    by /u/prajyo1430

    submitted by /u/prajyo1430 [link] [comments]

  • AWS Secrets Manager vs SSM Parameter Store?
    by /u/PerfectlyCooperative

    Can anyone explain the differences and when to use either of these two? submitted by /u/PerfectlyCooperative [link] [comments]

  • Difference between using X-Ray APM's with OTEL vs Mesh
    by /u/araujobnelsong

    Hello guys, So right now I have a Ruby application running in an EKS Cluster. We are currently using Datadog for tracing all our requests but it's has been asked to switch to AWS' X-Ray APM. I have been investigating and basically found 2 options to achieve this: 1) AWS Distro for OpenTelemetry : The site itself is a bit confusing but I think I'm understading it. If I'm right, I should follow those steps in my infrastructure: https://aws-otel.github.io/docs/setup/eks which basically guides you to install the OTEL collector as a sidepod (and also add a couple of lines in your application code) 2) Using Appmesh: Using the appmesh chart to EKS (which I already have configured) but passing some parameters such as : --set tracing.provider=x-ray -- The second one seems simple to do (considering I'm already using mesh) but maybe I'm missing something (?). Perhaps using the second way I wont be able to capture certain things, I don't know. Would be cool if anyone with some expertise on this can tell me the pros/cons of those 2 ways. ​ Thanks in advanced. submitted by /u/araujobnelsong [link] [comments]

  • Taking an Instructor-led Course After or Before Study Materials?
    by /u/g0stsec

    Looking for recommendations on this. Background: I'm an IT professional with 20 years experience. Experience up and down the OSI model from end user support, helpdesk and enterprise service management. Solid background in networking, network security, systems administration, (Linux and Windows), storage solutions, and some virtualization experience (VMWare ESXi specifically). Opportunity: I have an opportunity to take a 3 day instructor-led course to prepare for the Solution Architect Associate exam. I'm not under the impression that this instructor led course is all I need. I expect to study materials for several weeks. Would you recommend taking the course soon (in the next few weeks) then studying for weeks, or taking the course after studying for several weeks (based on your experience if you have it please). submitted by /u/g0stsec [link] [comments]

  • Choosing a Database for Serverless Applications
    by /u/RichardGrant_

    submitted by /u/RichardGrant_ [link] [comments]

  • New to AWS Certs, do I need anything before AWS SCS?
    by /u/GroundbreakingMark4

    Hi everyone! I’m new to AWS certs but have some experience penetration testing AWS environments. I was thinking of doing AWS Solutions Architect Associate (with probably Cloud practitioner as part of my study) followed by AWS Security Specialist but I wasn’t sure if: a) there are any pre-requisites for the security specialist or if I could jump straight in b) if anyone has just jumped straight in to security specialist or if they any of the aforementioned certs (solutions architect and practitioner) are recommended. Thanks! submitted by /u/GroundbreakingMark4 [link] [comments]

  • Question about Compute Optimized Instances
    by /u/TheKwom

    I am just beginning to learn about EC2 in hopes to get the cloud practitioner certification. I am taking the essential course that is provided by Amazon. When talking about compute optimized instances it gives the example of dedicated gaming servers. I thought a dedicated server was one that you had in house. Wouldn’t using AWS mean it’s not a dedicated server? Or is it saying it would be just as good? Sorry if this is a dumb question, very new to cloud computing. submitted by /u/TheKwom [link] [comments]

  • AWS Solution Architecture modification to original design....Thoughts
    by /u/Accurate-Beach-994

    submitted by /u/Accurate-Beach-994 [link] [comments]

  • Using custom license in Azure Data Exchange
    by /u/rox11goly

    Hey redditors, Is there a way for a data provider to enable subscribers to use a vendor provided license instead of the AWS Data Exchange subscription when subscribing to the individual products offers? My use case here is I want to distribute the data through multiple platforms and not just AWS Data Exchange. So ideally, I would want subscribers to use the license which could be generated by the customers/subscribers through my license portal and use this to allow/enable them to subscribe to the product offerings in AWS Data Exchange. This way I can then publish my data to some other platform say Azure Data Factory and the customer/subscriber would be able to use the same license to access the data there as well without having to create separate subscriptions on individual platforms. Is this possible to do? Or is there any workaround for this? submitted by /u/rox11goly [link] [comments]

  • Managing Cloudformation parameter files
    by /u/Mahler911

    We don't use Terraform or CDK, maybe one day. Right now it's just CFN YAML files and the associated parameter JSON files. We store the templates themselves in GitHub, but the different parameter files are getting a little out of control. So we have redis.yaml, but then we have redis-app1-dev-params.json, redis-app2-dev-params.json, redis-app1-prod-params.json...etc. Is there a better/easier/recommended way to handle these files? submitted by /u/Mahler911 [link] [comments]

  • Is this a good deal? $1250 for AWS Solutions Architect Course and Certification. I am looking to get AWS Certified and prefer an actual instructor which this offers. I usually have a hard time with self study.
    by /u/soulreaver99

    submitted by /u/soulreaver99 [link] [comments]

  • Moving Local Machine Learning Experiments to Amazon Cloud with Terraform - Tutorial
    by /u/thumbsdrivesmecrazy

    In this tutorial, you can learn how to move a local machine learning experiment to a remote cloud machine on AWS with the help of Terraform Provider Iterative (TPI): Moving Local Experiments to the Cloud with Terraform Provider Iterative (TPI) submitted by /u/thumbsdrivesmecrazy [link] [comments]

  • Client-side LDAPS closing connection.
    by /u/jsupun

    I'm trying to use LDAPS with my managed AD. I've created a CA certificate for my test. openssl ecparam -out MyRootCA.key -name prime256v1 -genkey openssl req -new -sha256 -key MyRootCA.key -out MyRootCA.csr openssl x509 -req -sha256 -days 365 -in MyRootCA.csr -signkey MyRootCA.key -out MyRootCA.crt I've registered/uploaded the MyRootCA.crt file, it accepted it. I can see the certificate in the list, the Common name matches directory name. I enabled Client-side LDAPS. Port 636 is accessible from my EC2 instance. I can perform a ldapsearch on port 389 without a problem, but if I switch to ldaps:// and port 636 I get an error message before even entering the password. ldap_start_tls: Can't contact LDAP server (-1) If I telnet to the IP, the connection get closed instantly. [ec2-user@ip-172-31-XX-XX ~]$ telnet 172.31.XX.XX 636 Trying 172.31.XX.XX... Connected to 172.31.XX.XX. Escape character is '^]'. Connection closed by foreign host. And when using openssl s_client to test [ec2-user@ip-172-31-XX-XX ~]$ openssl s_client -connect xx.ad:636 CONNECTED(00000003) write:errno=104 --- no peer certificate available --- No client certificate CA names sent --- SSL handshake has read 0 bytes and written 289 bytes --- New, (NONE), Cipher is (NONE) Secure Renegotiation IS NOT supported Compression: NONE Expansion: NONE No ALPN negotiated SSL-Session: Protocol : TLSv1.2 Cipher : 0000 Session-ID: Session-ID-ctx: Master-Key: Key-Arg : None Krb5 Principal: None PSK identity: None PSK identity hint: None Start Time: 1652894061 Timeout : 300 (sec) Verify return code: 0 (ok) --- Being a managed service it's hard to tell what is going on. The 636 port is open, but something doesn't like my connection. Not sure if I'm missing setup AD to accept the connection. Thanks. submitted by /u/jsupun [link] [comments]

  • Cross account access using s3 acesspoint
    by /u/SlumberMine

    Can someone in most simplified and minimal steps tell me how can i setup cross account s3 access to account B from account A using nothing but s3 access points The principal of the policies should be at the account level so any role in account b can access the bucket. p.s. I have tried setting it up, but aws console seems to reject my valid acess point policy. Even example from the docs doesn’t seems to be working. submitted by /u/SlumberMine [link] [comments]

  • Hosting dotnet core web app in aws elasticbeanstalk with datadog. Do I need to install datadog agent per web server or just install datadog agent in a dedicated server and use that agent from all web servers?
    by /u/shahisunil

    Can any one help me with this noob question? I know this is more of a datadog question than aws question but was wondering if anyone here has some experience with datadog with elasticbeanstalk. I am trying to host a dotnet core web application in aws elasticbeastalk. Windows With IIS platform. And trying to collect traces from my web application to datadog. I was under the impression that we can have a dedicated datadog agent server and send all the traces to that agent. Is this right approach? or do I need to install datadog agent in each ec2(web servers). If dedicated server is ok. I created a dedicated server and installed the datadog agent but when I run telnet or powershell Test-NetConnection command to check connection to the server port 8126 it shows tcp connection failed. Firewall is not an issue. Test-NetConnection -ComputerName my.domain.com -Port 8126 submitted by /u/shahisunil [link] [comments]

  • A Guide to Preview Deployments with Serverless CI/CD
    by /u/RichardGrant_

    submitted by /u/RichardGrant_ [link] [comments]

  • Security Group not whitelisting CIDR range
    by /u/thekingofbeans42

    I have a security group that whitelists RDP traffic for the range 123.123.0.0/16 A VDI was unable to connect, so the same RDP rule was added specifically for its IP (123.123.45.45/32) and that fixed the issue. Shouldn't the first rule cover this? The instance's IP is part of the CIDR but for some reason only listing it specifically has granted access. I'm thinking something else must have been changed but I do want to check if there would be any reason this change could have done it. submitted by /u/thekingofbeans42 [link] [comments]

  • Allow ECS Task Role to assume any role or invoke any lambda function. Yay or nay?
    by /u/RemarkableFlow

    Hey all, I'm having ECS assume roles and invoke lambdas in other trusted accounts in my AWS Org. To keep maintenance simple as this scales, I added a PolicyDocument to my ECS Task Role that allows lambda:InvokeFunction on resource * and sts:AssumeRole on resource *. Because the ECS Task role can only be assumed by the ECS service, I get the impression it's decently well secured and therefore not much of a weak link in our security. Am I missing something, do you think it's safe to allow this ECS task to assume any role or invoke any Lambda function? submitted by /u/RemarkableFlow [link] [comments]

  • CloudFront popular objects
    by /u/865346457

    In CF I have not enabled logging but I see a page that shows popular objects. How can I disable this? I do not want to see clients files names etc.. submitted by /u/865346457 [link] [comments]

  • Migration Question
    by /u/ackrite07

    I've been asked to migrate a client to AWS. It looks fairly simple as they already have VMWare, they want to migrated because they don't want to keep paying VMWare's licensing fees. I'm not too sure how to connect the clients to the server once it's on AWS. Normally, I'd just setup a VPN connection between sites but half their workers work from home and I don't know how to handle at. Any help, suggestions or pointers would be appreciated. submitted by /u/ackrite07 [link] [comments]

  • Problem with ELK stack setup.
    by /u/cp24eva

    Hi. I was recently tasked to set up and ELK stack (first time for me) and I am having an issue with the authentication. This is part of the error I'm getting when doing a curl to the localhost:9200 - ​ "security_exception","reason":"missing authentication credentials for REST request ​ So, I'm not sure how to handle this authentication issue. The only users on the EC2 instance is the default ec2-user and root. Do I have to put a cert on the local profile or something? Again, I'm first timer and a bit new at this. Thanks. submitted by /u/cp24eva [link] [comments]

  • How I passed Certified Cloud Practitioner Exam by studying < 15 hours (Tips)
    by /u/Adventurous-Sign4520

    Hey everyone, I am writing this post to serve as a guide for folks who are looking for a quicker way to crack the exam. FYI, I have < 1 year AWS experience. Before I started my prep I was aware about high level basics for EC2, Lambda, SQS, SNS, RDS. I did Ultimate AWS Certified Cloud Practitioner - 2022 course by Stephne Maarek and skipped the hands on parts (you can do the hands-on if you are curious about something). I watched lectures at 1.25x and after end of every module, I would go through summary lecture and do the quizzes for the module. Before my exam, I went through all summary sections again and did all those practice quizzes again for each module. I appeared in the exam and surprisingly, everything that was asked was seen in the course. Just my two cents for people who are in a bit of a rush. Give yourself 2 days and schedule time blocks in calendar to study for the exam. Edit1: Create a document to remember high level summary of what each thing does. If instructor mentions something important (or something is highlighted in bold in the slides), put it in your notes. Take a minute to guess (or memorize) what the service does before instructor talks about it in the summary. I skipped Section 20: Other services as it was likely not going to be in the exam submitted by /u/Adventurous-Sign4520 [link] [comments]

  • InvalidVpcID on DeleteVpc operation, despite describe_vpcs just outpitting that same ID, whut?
    by /u/KBricksBuilder

    Using Boto3 im playing around with deleting VPC's and the code works most of the time, however in some case I can literally call the describe_vpcs operation and get the ID I know the VPC has printed correctly, but then when that same ID is hardcoded and used in the line below it will throw an InvalidVpcID error. Anyone seen this shit before? https://preview.redd.it/v7jnokzan8091.png?width=1419&format=png&auto=webp&s=710802d504c7de6d90cdddd44eb17b0f787d19ce submitted by /u/KBricksBuilder [link] [comments]

  • SAP-C02 AWS Certified Solutions Architect - Professional certification exam is changing November 15, 2022. The last date to take the current exam is November 14, 2022
    by /u/HolmesChong

    Starting November 15, 2022, a new version of the AWS Certified Solutions Architect - Professional exam will be available. The AWS Certified Solutions Architect - Professional exam has been updated to align with the AWS Well-Architected Framework across all domains and will ensure the certification validates the latest AWS technical skills and cloud expertise. Please review the updated exam guide to learn what to expect and to help you prepare. If you are preparing for the current AWS Certified Solutions Architect - Professional exam, or need to recertify, you’ll want to make sure to take the current exam by November 14, 2022. https://aws.amazon.com/certification/coming-soon/ submitted by /u/HolmesChong [link] [comments]

  • How do I get logs for Windows Server?
    by /u/MadAltruist

    I'm new to using AWS and Windows Server. I'm trying to run an application but it gets stuck on "loading" and it never loads. Will someone please teach me what log to look at and where to find it so I can troubleshoot it? Thank you very much in advance. submitted by /u/MadAltruist [link] [comments]

  • appspec.yaml or appspec.yml for a code deloy on an ECS cluster
    by /u/KeyCup2606

    Hello, I'm having this AWS Developer Certification question: ​ https://preview.redd.it/2kc0egxak8091.png?width=1217&format=png&auto=webp&s=b0589fa4121477855259de1cf8ea1afa8f9831b2 ​ ​ But according to AWS.We can use appsepc.yaml or appspec.yml . ​ ​ https://preview.redd.it/y7shtqajk8091.png?width=1418&format=png&auto=webp&s=5573403a3399267dc45de470511f304a4c68d4c5 I'm really confused .What's the correct answer ? submitted by /u/KeyCup2606 [link] [comments]

  • Passed SOA-C02 with 848
    by /u/nonFungibleHuman

    So finally received my results today, thanks to everyone that posted his/her experience here doing the exam. I took it in a Test center (Person Vue) because of your recommendations and would 100% repeat the experience, flawless and the labs went smooth. Background: This is my second cert, last year got the Developer Associate and up today I've got around 2 years working with AWS, lately on personal projects for learning purpouses. Having experience with the console helps a ton with the labs, and doing such projects helped me grasping the knowledge better. I am a software developer with 5 years of exp. and I want to jump into Architect or Devops, that will depend on my new job. I used u/stephanemaarek udemy course and u/jon-bonso-tdojo practice exams/labs, studied for 2 and a half months 1 to 2 hours daily, and took a bunch of notes in the form of flashcards (around 900 flashcards), which I revised daily (10-100 cards per day). On practice tests I was scoring around 80%, I did the one in Mareek course and then the final exam in job bonso material, doing the exams in section mode and review mode helped me a lot to tackle the weak points, and the explanations of each answer are just amazing. I am going to focus now on skill development, so no certs for now but after I decide with path to go (probably devops) I'll go for Devops Pro. submitted by /u/nonFungibleHuman [link] [comments]

  • CloudWatch Alarm when I/O's exceed x amount for the month.
    by /u/stupid_aws_qs

    Hi there, Is there a way to setup an AWS CloudWatch alarm that will monitor the I/O's of my RDS Aurora instance for the month? I checked it out and seems like the metric I need to use is the VolumeReadIOPS and VolumeWriteIOPS, since those seem to be the billed ones. I am having issues setting it up to combine the two metrics and get the total amount. But then there is the whole period issue, since I'd like it to check every 5 mins or so, but it should only take into account the current month. I don't want to look at April's data on the 1st of May, for example. The sum should start at 0 again. Is this possible? And if so, how? Thanks so much! submitted by /u/stupid_aws_qs [link] [comments]

  • AWS training materials vs courses
    by /u/FBAmike

    HI, At the associate level, you see a lot of recommendations for Stephane, Neal, or Adrian's course, with some free resources mixed in (freecodecamp, etc) with a few practice test options. I don't have a good sense of AWS' own training. Is it simply too shallow to pass with? Is it organized poorly? Is it a viable alternative? Can someone who has a good sense of the various paid courses and AWS training put them in a context for me so I can figure out how to approach this. submitted by /u/FBAmike [link] [comments]

  • How do I end this recurring charge?
    by /u/SalvosMachina

    The aws console user interface is so confusing. How do I stop this reoccurring charge? https://preview.redd.it/og6netbv36091.png?width=2652&format=png&auto=webp&s=fc61833f4099879ea23c5eb76bfbb4b151cfdbb8 submitted by /u/SalvosMachina [link] [comments]

  • Failed SAA-C02
    by /u/CrazyRichBen

    Hi everyone, just received my results, scored 705/1000. Which kinda sucks because it's so close to 720! (It's close, right? I'm not really too sure about the margins). Exam was on the 17th of May. I finished Stephane's course literally the day before. Didn't even attempt the practice test cuz well, to be honest, I didn't expect the course to have SO much content. All I did was review the quizes at the end of each chapter and did the 10 free questions off the AWS website. I wished I'd found this sub sooner, seeing that there are so much helpful content, like tutorials dojo practice exams (which I hear is really helpful). Am gonna take a few days off and then booking another test date to try again. Also, is the retest 50% off? My first attempt was FOC via a voucher my company. -Edit- Thanks for the tips and encouragement guys! I have a copy of Neal Davis' book, AWS Certified Solutions Architect Associate Practice Tests 2021 [SAA-C02]: 390 AWS Practice Exam Questions with Answers & detailed Explanations. Anyone knows is it similar to the material he has online? Thanks. submitted by /u/CrazyRichBen [link] [comments]

  • Cloud Engineering Vs Software Engineering
    by /u/AnikImtiaz

    Which career between software engineering and cloud engineering has better future prospects in terms of salary, growth, and job stability? submitted by /u/AnikImtiaz [link] [comments]

  • AWS, I love your services and APIs but your API/SDK/CLI docs are killin' me!
    by /u/YeNerdLifeChoseMe

    I can't be the only one feeling this. I love AWS APIs. I love the services. But the API/SDK/CLI docs are soooo painful to navigate. I've written my own doc search helper for CLI/API that helps me get around. I’m going to have to write something else to help with the boto3 AWS python SDK. I think it’s even more painful than the CLI docs. A common problem with the docs is that you have this big table of contents on the left so you click on a topic, and it bring up a page and possibly to an anchor, but the page is huuuuuuge and there’s often no hyperlinks to get around easily, so you have to search. Here’s an example: IAM — Boto3 Docs 1.23.1 documentation (amazonaws.com). When you click on that link you go to the IAM service Policy resource about 4/5 down a web page that goes on for miles. The table of contents isn’t synced. And the only way to navigate is to search or Ctrl-Home and there’s a slightly more focused TOC than the left frame. There's other "mini-TOCs" scattered throughout the page. So instead of just complaining with no solution, here’s what I think would help on most of the documentation: Have the TOC on the left frame be hierarchical and context sensitive. So you can expand/collapse sections with a useful search that stays visible when you scroll. Break up the content on the right frame into much smaller pages Have more hyperlinks in the content Microsoft actually does an excellent job. Here’s an example: SmtpClient Class (System.Net.Mail) | Microsoft Docs I spend all day doing AWS, and I love it, so this isn't just spewing hate. This is simply a daily pain point for me and I can imagine it is for many others as well. EDIT: To clarify, the docs are complete and well written. Just really painful to navigate. I know the docs are open source and I can help fix it, but AWS isn't a charity and I spend my entire days working on stuff that ultimately AWS gets paid for. I think they have the resources to handle this. I'm not a big complainer, but this is a really valid source of pain for me each day. I would literally be twice as productive if the docs were easier to navigate. I know software and systems development. I don't know the syntax to every API and the attributes of every model. The reality this is the world we live in. Things change so quickly. Kudos to AWS for keeping the documentation up to date. It's to their benefit. It would also be to their benefit to update their documentation frameworks on the development side. This isn't an open source or academic project. It's the largest for-profit cloud provider in the world. submitted by /u/YeNerdLifeChoseMe [link] [comments]

  • Free sample exam lab for SOA-C02
    by /u/trofosila

    Just registered for the proctored exam with Pearson VUE. In the confirmation email I read this For a limited time, we are allowing you to test out a free sample exam lab to get hands-on experience with the exam lab environment before you take the exam. You will be allowed to take the exam lab three (3) times over a 90-day period from your first exam lab attempt. and then I'm supplied with login info and an URL. Is this new or has it always been like this? LE: this is what I'm talking about: https://preview.redd.it/2g58h5w9h3091.png?width=1436&format=png&auto=webp&s=e58d0a1d1c0f36a23f8422960ddfc04ca12a7f5d submitted by /u/trofosila [link] [comments]

  • Am I on the right path?
    by /u/DreadMarvaz

    Guys, long story short Completed Neal Davis course, 49% on his exam. Now i'm finishing Stephane Marek course and also have 5 TD exams. Is it convenient to take exams and write my own flashcards? Or keep going with the course (65%)? Today I got completely burned, couldn't even think. Got to take the real exame on May 27th, 10 days from now. What would be your advices? submitted by /u/DreadMarvaz [link] [comments]

  • Delay PearsonVue test results
    by /u/M7EE45

    I’ve passed my Developer associate exam today, it displayed pass at the end of the exam. However, I haven’t revived any mail from aws about the exam or any score/certification confirmation. How long does it take for aws to confirm and by when can I see it in certmetrics ? submitted by /u/M7EE45 [link] [comments]

  • AWS Cloud practitioner curricullum vs Udemy training curriculum -I do not see a match here
    by /u/MineMe4Reddit

    Below are the two side by sideThis is the training I am referring to https://www.udemy.com/course/aws-certified-cloud-practitioner-new/ Is the column A equivalent with B, sorry I have no cloud experience and I have no idea it there is a match between the two https://preview.redd.it/o9dibnttr1091.png?width=1251&format=png&auto=webp&s=fab89e8a4c221238d9ece4b7c5f868a8d67cf6b1 submitted by /u/MineMe4Reddit [link] [comments]

  • Passed SAA-C02
    by /u/pawills

    Big thank you to u/acantril and his cats for their excellent course, and to u/jon-bonso-tdojo for the practice exams + cheat sheets. The gold standard, as I've said a few times. 858 / 1000 for me, so not my best effort, but a solid pass. I'll take it. Now onto the SysOps Associate.... submitted by /u/pawills [link] [comments]

  • SAA-C02 Pass
    by /u/sdotIT

    Studied for 2 months. I had some complicated personal stuff going on and probably would have cut that down a bit had I not. Finished with a 796. Took the exam at home with Pearson. Woke up very ill and it was quite difficult to focus on the exam. I paid for it so I wasn't going to not take it. Finished with 50 minutes left. Tried to go through some questions but after a few minutes of that I wrapped the exam. Couldn't stand sitting there any longer and needed to lay down. Used Adrian Cantrill's course and Tutorial Dojos practice exams. All you need, really. I took 2 pages of notes. I'm not a big note taker and only really did so to reinforce facts. I also had Stephane Maareks udemy course from before I knew about Adrian's (months before I started studying). I used this in lieu of notes. Used the short videos to brush up on things I needed to from practice exam results. If I felt I needed more I rewatched Adrian's video on it. Went through his slides twice, once a week before and once the day of. I had some wild questions on the exam regarding Polly, Lake Formation, and Code Pipeline. Roughly 70% of the exam I feel like was based on databases and decoupling. I felt ready. I feel I should have done better. I don't think my not feeling well played much if any role in my score. Some of the questions were worded very confusingly. Much more than other certs I've taken or the tutorial dojo practice ones. I feel the exam was quite a bit more difficult than the practice exams. I scored 65% on the first two practice exams, 73% on the third, and 80%+ on the rest. Each time following first two, brushing up on things I missed (was noting down topics as I went through answers so I had a list of topics to go through). Happy to answer any questions! submitted by /u/sdotIT [link] [comments]

  • Landed a jr. SA role with <1 yr experience. Let's talk
    by /u/keypairvalue

    Questions are preferred, I don't think I can type out a wall of text that is going to help everyone in their specific situations. I achieved the SAA and SAP in a span of 7 months. I got my SAA while not in tech, SAP while working a tech job. My first and only job thus far was non-technical monitoring in a NOC team at a VAR. I was promoted to jr. SA internally. A big contributing factor to landing that first job, imo is that I researched companies before deciding to apply to them. I didn't spend entire days sending out resumes/applying. My criteria for the companies I was looking to apply to were: MSP/VAR. Generally agreed upon as fast-paced and stressful in a lot of departments, but having many different clients and problems to solve is a great learning experience. They also tend to hire like crazy. Numerous cloud roles available, especially junior/associate level ones even if they weren't the specific role I was looking for. Companies may have opportunities that aren't necessarily posted on their job boards. I wasn't going to be picky, I was OK with working my way up in a company to get that breakthrough. A big plus if providing cloud solutions was a relatively new thing for them As for the interview I could write pages on it. In short, me being super fresh & having the SA Pro clearly threw up some doubt/red flags in the interviewer's mind. He made sure I had the practical knowledge to go along with it. Big emphasis on practical, as more often than not, people unfortunately don't come out with practical knowledge after passing a cert. Which can make these interviews go from tough, to actually impossible. Also the dude who made a throwaway to just say I exam-dumped it on my last post, can suck my nuts. You need to have a plan.. it's tough being new to tech and picking out an end-goal, but it's the most optimal way to climb quick. Lay out your steps. Your certs, projects, & technical skills need to paint a clear picture of where you're going. All my certs, projects, and skills.. they're all architecture related. As for my future - I'm getting more engineering experience since a full-fledged SA is expected to handle low-level technical implementations to a degree, but also plan around the nuances of that. submitted by /u/keypairvalue [link] [comments]

  • Is it normal to feel super confused after the first day of studying for a Cloud practitioner
    by /u/FlimsyParty544

    I'm a musician looking to dive into the tech side of music. A friend of mine suggested I go get my AWS cloud practitioner then solutions and get an entry-level job and work my way up in the industry. I'm using A cloud guru to help study but after going through units one and 2 I feel kind of lost. Is this a normal feeling to have? submitted by /u/FlimsyParty544 [link] [comments]

  • Prepping for SysOps Admin, Practice Lab Walkthrough Videos
    by /u/JBizzle703

    I've been prepping for the SysOps Admin Associate exam (primarily using ExamPro as the study content), but have started to make some lab walkthrough videos of some of the core technical components. I wanted to share my latest one here on Auto Scaling and Load Balancing, in case it might help some folks studying for this or the SAA. If you like it, I have a few more on the channel I've done (VPC's/Networking, Cloudformation, and S3 and lifecycle polices). https://youtu.be/RBKNVhAD6bw submitted by /u/JBizzle703 [link] [comments]

  • Passed AWS Certified Developer - Associate (CDA)
    by /u/Account_Aged_Well

    Last Saturday I took and passed the AWS Certified Developer Associate (CDA) certification exam. Woohoot! Just want to share the achievement with the group. I credit two things for passing: my current role and Tutorials Dojo practice exams on Udemy. For the latter, I would take an exam and then build flashcards from what I didn't know. Then it was spaced repetition until memorized. At my current role as a Software Developer working the full stack I deal with AWS on a daily basis. I've been in the profession for two years, so this helped out a bunch as well. submitted by /u/Account_Aged_Well [link] [comments]

  • how much time will it take to know the result aws SAA C02?
    by /u/udaymahanthi

    submitted by /u/udaymahanthi [link] [comments]

  • Failed SAA-C02
    by /u/Guilty-Owl-9625

    Took the test Sunday and Got my score today. I failed the SAA-C02 (705). Totally bummed. I’m looking for recommendations on what I can do to pass the SAA-C02. I completed the Stephen Maarek Udemy course and the tutorialsdojo practice tests by Jon Bonso. Apparently this isn’t enough. Do I sign up for Cantrill’s course or do I more practice tests? submitted by /u/Guilty-Owl-9625 [link] [comments]

  • Cantrill slides for Solutions Architect Associate
    by /u/Usurper__

    Hi, ​ I'm currenctly going through Solutions Architect Associate course, but I'd like to get the slides for the videos. Can I find these somewhere in the cantrill.io site? submitted by /u/Usurper__ [link] [comments]

  • Is there a Cantrill-equivalent to an Azure course?
    by /u/hritter

    "Why not ask the Azure sub?" I'm asking in this sub because who else would know Cantrill's stuff best than the people taking his course and maybe even Cantrill himself. Although I'd probably ask there later. To explain, I was gearing up for AWS but I got the covid and life has a funny way of twisting things around and now I'm using Azure in the workplace. I'm still planning to go after an AWS cert in the future, but I'm just wondering in the meantime while I pad the resume, if there's an Azure counterpart course I can at least get knee deep in. Thanks in advance! submitted by /u/hritter [link] [comments]

 
AWS Developer Associate DVA-C01 Exam Prep