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AI Unraveled: Demystifying Frequently Asked Questions on Artificial Intelligence

Exploring the Pros and Cons of Visiting All Provinces and Territories in Canada - Exploring the Pros and Cons of Visiting All Provinces and Territories in Canada. Canada is a vast country, consisting of ten provinces and three territories, each with its unique geography, culture, and tourist attractions. Here are the pros and cons of each province and territory from a tourism and travel perspective:
Exploring the Advantages and Disadvantages of Visiting All 50 States in the US - Exploring the Advantages and Disadvantages of Visiting All 50 States in the US. Are you planning a road trip to explore the United States and wondering which states to include in your itinerary? With 50 diverse states to choose from, each with its unique culture, landscapes, and attractions, it can be a daunting task to decide where to go. To help you make an informed decision, this blog will explore the advantages and disadvantages of visiting all 50 states in the US. From the bustling cities of New York and California to the breathtaking natural wonders of Alaska and Hawaii, we'll cover the pros and cons of each state to help you plan the ultimate American adventure. So, buckle up and join us on a virtual tour of the 50 states!
What is trending in March 2023 - What is trending in March 2023? It's hard to keep up with the ever-changing trends in our day and age, but have no fear! March 2023 brings a multitude of fun styles and exciting ideas that will get you ahead of the curve. From food and fashion to music and entertainment there is something for everyone. Whether you’re looking for great places to shop or unique experiences, this month has it all! Get ready to explore what’s new in the world so you can stay on top of the trendiest topics. Find out more about what’s trending right now by reading below!
Artificial Intelligence Frequently Asked Questions - Artificial Intelligence Frequently Asked Questions AI and its related fields -- such as machine learning and data science -- are becoming an increasingly important parts of our lives, so it stands to reason why AI Frequently Asked Questions (FAQs)are a popular choice among many people. AI has the potential to simplify tedious and repetitive tasks while enriching our everyday lives with extraordinary insights - but at the same time, it can also be confusing and even intimidating. AI FAQs offer valuable insight into the mechanics of AI, helping us become better-informed about AI’s capabilities, limitations, and ethical considerations. Ultimately, AI FAQs provide us with a deeper understanding of AI as well as a platform for healthy debate.
Everything You Need To Know about Super Bowl LVII - Everything You Need To Know about Super Bowl LVII Super Bowl LVII: Odds - Predictions - Live Streams - Trends on Field - Commercials - Songs - Food and Drinks - Dips Super Bowl LVII is just around the corner, and it is sure to be an exciting event. Each year, the Super Bowl brings together people from all walks of life to watch one of the most highly anticipated games in professional sports. But it's not all about the game—there are many other aspects that make this annual tradition so special. From live streaming to commercial trends, delicious food and drinks to halftime performances, let’s take a look at what you need to know about Super Bowl LVII.
10 Unhealthy Habits That Can Negatively Impact Your Brain Health - 10 Unhealthy Habits That Can Negatively Impact Your Brain Health. Our brains are powerful and complex organs that help us learn and grow. But, like any other part of our body, our brains can suffer if we don't take proper care of them. In fact, certain habits can do more harm than good, leading to impaired mental function and even brain diseases such as Alzheimer's or dementia. Let’s take a look at the top ten unhealthiest habits for your brain.
What are people searching for in February 2023 - What are people searching for in February 2023 Trends come and go, but one thing people always do is search. By February 2023, Google's top searches could range from style to sports to the small, everyday moments that people gravitate towards. No matter what questions, needs or interests fill our lives by then, people can be sure information will be only a few clicks away. So whether someone is searching for their favorite Chicago Bears player's records in February 2023, or trying out a trendy hairstyle - they can trust that Google has got them covered.
Financing Black Businesses in Canada and USA: Challenges and Opportunities - Financing Black Businesses in Canada and USA: Challenges and Opportunities. Access to capital continues to be a major obstacle for entrepreneurs of color, especially for Black entrepreneurs. Despite this, the growth of Black-owned businesses has been remarkable. According to a report from the US Census Bureau’s Survey of Business Owners (SBO), the number of Black-owned businesses doubled between 2007 and 2012, reaching 2.6 million in 2014. However, many of these businesses face significant challenges when it comes to securing financing from traditional financial institutions. This blog will discuss the experiences of Black entrepreneurs in securing financing for their businesses and explore alternative financing options that may support the development and growth of Black enterprises.
How to use Google Search and ChatGPT side be side? - How to use Google Search and ChatGPT side by side? Google Search and ChatGPT can work side by side. Google Search can be used to find specific information on the internet, while ChatGPT can be used to understand and generate human-like text. They can be integrated together in various ways, such as providing answers to user queries by combining information found through Google Search with the language generation capabilities of ChatGPT. It could be used to provide more accurate, complete and human-like answers to the user.
Examining the Fragmented Data on Black Entrepreneurship in North America - Examining the Fragmented Data on Black Entrepreneurship in North America In order to accurately assess and support Black entrepreneurship, it is important to have a standardized framework for collecting and analyzing data. Unfortunately, the current data on Black entrepreneurship in the United States and Canada is fragmented and inconsistent. This makes it difficult to accurately assess measures of success or failure among Black entrepreneurs. In this blog post, we will discuss how to reconcile this fragmented data and the methods that should be used to standardize measures and assessments of Black entrepreneurship.
What are the pros and cons of Xiaomi tablets compared to iPad and Microsoft Surface tablets - What are the pros and cons of Xiaomi tablets compared to iPad and Microsoft Surface tablets
Optimizing Your Blog for Google’s 2023 Algorithm Update - Optimizing Your Blog for Google's 2023 Algorithm Update How to structure a blog to be compliant with Google latest search algorithm in 2023? Every few years, Google releases an algorithm update that affects the way search engine results are ranked. As a writer or blogger, it is important to stay abreast of the latest SEO trends and ensure that your blog is structured in a way that complies with Google’s requirements. This article will outline how you can optimize your blog for the upcoming 2023 algorithm update.
What are top 10 Healthy meal prep ideas for weight loss? How can AI help with weight loss? - What are top 10 Healthy meal prep ideas for weight loss? When it comes to healthy eating and weight loss, meal prep is essential. Eating healthy meals and controlling your portions can help you reach your healthy lifestyle goals in no time. With that in mind, we’ve rounded up our top 10 healthy meal prep ideas for you to use while working towards your desired weight loss goals. Focusing on healthy, nutrient-dense foods such as lean proteins, healthy fats, non-starchy vegetables, legumes and complex carbohydrates is the key to creating healthy meals for weight loss. Once you've figured out which healthy foods you need to focus on in order to lose weight successfully, let the fun meal prepping begin! Meal prepping isn't only great for losing weight; it's also an excellent way to save time (and money) throughout busy weekdays. So next time you're looking for a healthy lunch or dinner idea that also boosts your weight loss efforts - check out our top 10 healthy meal ideas!
How do you protect yourself against future potential policy changes that would affect your retirement account withdrawals in early retirement? - How do you protect yourself against future potential policy changes that would affect your retirement account withdrawals in early retirement? Protecting your future finance in the wake of any sudden policy changes that can affect retirement account withdrawals in early retirement can be daunting, but with an understanding of the basics of finance and investment, you can empower yourself to be proactive. Ensure that you are keeping a close eye on changes, new investments schemes, and other opportunities. Making wise decisions regarding financial investments to protect your retirement account can go a long way in safeguarding yourself against future potential policy changes. Preparing for the worst is always wise - make sure your finances are diversified and compliant with changing regulations so you will have back-up plans even if suddenly policies change.
Google Workspace – Docs – Drive – Sheets – Slides – How To - Google Workspace - Docs - Drive - Sheets - Slides - Forms - How To Top 10 Google Workspace Tips and Tricks Top 10 Google Docs Tips and Tricks Top 10 Google Sheets Tips and Tricks Top 10 Google Drive Tips and Tricks Top 10 Google Sheets Tips and Tricks Top 10 Google Slides Tips and Tricks Top 10 Google Forms Tips and Tricks
How can I oblige tensorflow to use all gpu power? - How can I oblige tensorflow to use all gpu power? TensorFlow, a popular open-source machine learning library, is designed to automatically utilize the available GPU resources on a device. By default, TensorFlow will use all available GPU resources when training or running a model.
How can I add ChatGPT to my web site? - How can I add ChatGPT to my web site? ChatGPT is a powerful chatbot platform powered by machine learning and AI. Whether you're looking to monitor user conversations or automate customer service, ChatGPT can be embedded on your website so that visitors can have real-time interactions with an intelligent chatbot. Integrating ChatGPT is easy and efficient, allowing your website to become interfaced with cutting edge AI technology within minutes. ChatGPT is the perfect way for businesses to drive engagement and collect valuable data from customer conversations in order to advance their product roadmap and streamline services.
What are some practical applications of machine learning that can be used by a regular person on their phone? - What are some practical applications of machine learning that can be used by a regular person on their phone?
Top 10 tips to protect your debit or credit card from being hacked? - Top 10 tips to protect your debit or credit card from being hacked? How do you protect your debit or credit card from being hacked? Protecting your debit or credit cards from being hacked can be daunting. However, following a few security and privacy best practices can ensure you don't become the victim of cyberfraud. Keeping your PINs and security codes safe - and not sharing them with anyone - is the foundation for protecting your financial data from malicious hackers. Upgrading to EMV-chip security on your credit cards offers an extra layer of protection against unauthorized access, while only making purchases on reliable websites that encrypt information helps minimize the risks posed by online shopping scams. Finally, tracking your card transactions regularly will alert you to any suspicious activity right away, allowing you to report it to your bank before further damage is done.
What are 10 ways to fix one AirPod that dies faster? - What are 10 ways to fix one AirPod that dies faster? AirPods are an integral part of staying connected to music, podcasts, audiobooks, and more. But when one AirPod dies faster than the other, tune-out time becomes a big problem. If this issue has been plaguing you, fear not: there are numerous ways to fix the AirPod that runs out juice much sooner than its partner! The first solution is to check the battery life of both AirPods with your iPhone or iPad and make sure that they’re both working as expected. If all else fails, try taking a look around your house to make sure your AirPod hasn't gone on a little expedition of his own! Of course, if this still doesn't solve your AirPod dilemma then perhaps it's time for a visit back to Apple so they can help remedy your audial fiasco. With these 10 foolproof tips for fixing AirPods that die before their time, shoddy sound quality will soon be nothing more than a distant memory!
Is it possible to sideload an app or game onto the Xbox One? - Is it possible to sideload an app or game onto the Xbox One? If you have been looking for a way to sideload an app or game onto your Xbox One console, then you're in luck! This is actually quite simple and can be done with just a few steps. First, go to the Microsoft Store online and find the app or game you want to sideload. Next, download the file onto your computer. Finally, connect a USB drive to your computer and copy the sideloaded files onto it. Then, disconnect the USB drive and plug it into your Xbox One console - and voila! You should now be able to sideload apps or games directly onto your Xbox One. Be sure to check out our blog which has more tips on sideloding apps on Xbox One.
What is the difference between a heuristic and a machine learning algorithm? - What is the difference between a heuristic and a machine learning algorithm? Machine learning algorithms and heuristics are two distinct approaches to problem solving - while both can often yield successful outcomes, they differ in a few key ways. Machine learning algorithms rely heavily on data input, meaning that the more data the algorithm receives, the more it can understand and learn about a specific situation or problem. Heuristics on the other hand use sets of rules and experience to address more complex problems - this approach often results in quicker problem solving due to less ‘thinking’ required on behalf of the algorithm. To sum it up, algorithms are best utilized by AI systems when large amounts of data is available, whereas heuristics prove most effective when context knowledge is at play. It's all a matter of which approach works best for your particular problem!
What is trending in January 2023? - What is trending in January 2023? January 2023 is definitely starting off with a bang! Trending topics, as determined by Google Trend analysis and Google Search results, bring attention to people’s shifts in interests. Right now it looks like the list of items people are interested in is expansive, from new generations of technology to movies and health trends. This is indicative of how adaptive humans can be—we’re always ready and willing to learn something new! Watching top searches evolve is one way to gain insight into the broader events happening around us. It will certainly be interesting to see what else comes up in January 2023!
What are some ethical concerns regarding artificial intelligence and its future development? - What are some ethical concerns regarding artificial intelligence and its future development? Debate about the ethical concerns surrounding artificial intelligence (AI) and machine learning have been becoming increasingly prominent. Issues such as safe AI and ethical AI are of utmost importance when it comes to continued development in this field, and if proper oversight is not account for these could easily become part of an unwanted dystopian future. Regulations need to be made with regards to how machine learning algorithms are developed and executed, while due diligence is taken to ensure that no negative affects are caused from its use. This sort of regulation is necessary so as to ensure the AI being produced is both responsible and well-monitored; accounting for any human bias or negative externalities created by machine learning algorithms.
What are some Canadian startups that use artificial intelligence/machine learning? - What are some Canadian startups that use artificial intelligence/machine learning? Canada's tech sector is booming with machine learning and artificial intelligence, and a number of young startups are leading the charge. From big-picture machine learning apps to AI solutions for every industry imaginable, Canadian startups are innovating in a powerful way. Sentenai, for example, uses machine learning to process data in real-time to create predictive analytics that can help businesses make faster decisions. Robokiller uses AI to block spam calls, while Caribou Labs develops solutions that use machine learning to help industrial organizations increase productivity. These examples show just how much potential lies within Canada's AI startup scene -- and there is much more still being discovered!
Top 200 Canada History Geography and Citizenship Test Quiz? - What are the Top 200 Canada History Geography and Citizenship Test Quiz? Canada has long been known for its natural beauty and stunning sceneries, encapsulated in our vast parks and wildlife reserves. For those interested in learning more about all this land can hold, there are more than 200 quizzes available on Canadian history, geography, government, citizenship tests, culture, people, economics, languages, travel and even hockey! Further still, dedicated tourists can learn about the incredible variety of beautiful Canadian sceneries and data visualizations across the country. Discovering the unique Canadian roots can have many exciting benefits for the modern citizen of today. Carry on!
What is The Most Accurate Machine Learning Algorithm for Predictive Modeling? - What is The Most Accurate Machine Learning Algorithm for Predictive Modeling? Machine learning algorithms are powerful tools used to automate predictive modeling. With predictive modeling, data scientists and machine learning engineers can build models that accurately predict future outcomes. But which machine learning algorithm is the most accurate when it comes to predictive modeling? Let’s take a look.
What is Google answer to ChatGPT? - What is Google answer to ChatGPT? Artificial Intelligence (AI) has been around for decades. From its humble beginnings in the 1950s, AI has come a long way and is now an integral part of many aspects of our lives. One of the most important areas where AI plays a role is in natural language processing (NLP). NLP enables computers to understand and respond to human language, paving the way for more advanced conversations between humans and machines. One of the most recent developments in this field is ChatGPT, a conversational AI developed by OpenAI that utilizes supervised learning and reinforcement learning to enable computers to chat with humans. So what exactly is ChatGPT and how does it work? Let’s find out!
What are the Top 10 Christmas song or music in 2022? - What are the Top 10 Christmas song or music in 2022? It's that time of year again! Christmas music is already playing in stores and on the radio, and people are busy making their holiday plans. As we head into the holiday season, let's take a look at some of the most popular Christmas songs of 2022.
Top 10 luxury cars that are completely overpriced considering the poor workmanship and lack of features? - Top 10 luxury cars that are completely overpriced considering the poor workmanship and lack of features? There are a number of luxury cars on the market that are completely overpriced considering the poor workmanship and lack of features. Ford, Buick, Lincoln, Dodge, Jeep, Chevrolet, Chrysler, GMC, Ram, Tesla, Cadillac, and Volvo are all examples of cars that fall into this category. While these cars may have a certain level of prestige associated with them, they simply do not live up to the hype in terms of quality or value. In many cases, you can find cars that offer better workmanship and more features for a fraction of the price. So if you're looking for a luxury car that won't break the bank, be sure to do your research before making a purchase.
What are the top 10 trending questions and answers related to protests and lockdowns in China in 2022 - What are the top 10 trending questions and answers related to protests and lockdowns in China in 2022? China has been in the headlines a lot lately due to the protests and lockdowns that have been occurring throughout the country. China has been facing many protests since early November of 2022. The main reasons for the protests are China's zero covid policy, the lockdown of China, the white paper revolution, and the CCP. China's zero covid policy is a policy that is meant to stop the spread of covid by only allowing people who have been vaccinated to enter the country. The lockdown of China is still occurring in some cities because of covid. The white paper revolution is a protest against China's censorship. The CCP is a political party in China that has been accused of human rights violations. The lockdowns in China are proving to be very difficult for the people living there. Many people are not able to leave their homes or see their families. This has caused a lot of anger and frustration among the people of China. The situation in China is still very fluid and it is hard to say what will happen next.
What are the top 10 tips to recognize intelligent people without talking to them? - What are the top 10 tips to recognize intelligent people without talking to them? We've all met them. The person who you can just tell is smart, without having to talk to them. But how can you recognize these intelligent people without talking to them? Here are some tips!
What are the top 200 African History and Geography quizzes? - What are the top 200 African History and Geography quizzes? How well do you know Africa? Test your knowledge with this Africa history and geography quiz. Africa is the world's second largest continent, and it is home to a stunning diversity of cultures, languages, and landscapes. From the Sahara Desert to the rainforests of the Congo Basin, Africa boasts a huge variety of geography. And its history is just as rich, from ancient civilizations like Egypt and Ethiopia to European colonization and the struggle for independence. So whether you're an Africa expert or just getting started, this quiz will help you test your knowledge of this amazing continent. Africa is a vast and fascinating continent with a rich history and diverse culture. To test your knowledge of Africa, take this Africa History and Geography Quiz. See how much you know about the people, places, and events that have shaped Africa over the centuries. AFRICAN HISTORY, AFRICAN GEOGRAPHY, AFRICAN CULTURE, AFRICAN PEOPLE, AFRICAN CUISINE, AFRICAN ECONOMICS, AFRICAN LANGUAGES , AFRICAN MUSIC, AFRICAN WILDLIFE, AFRICAN FOOTBALL, AFRICAN POLITICS, AFRICAN ANIMALS, AFRICAN TOURISM, AFRICAN SCIENCE, AFRICAN ENVIRONMENT
macOS Stuck on Checking for Updates? 4 Solutions - macOS Stuck on Checking for Updates? 4 Solutions Macs are renowned for their reliability and streamlined user experience. However, even the best computers can sometimes run into problems. One common issue is when MacOS gets stuck on the "Checking for Updates" screen. This can be frustrating, but there are a few steps you can take to fix the problem.
Can AI predicts US Mid-Terms 2022 Election Winners? - Can AI predicts US Mid-Terms 2022 Election Winners? As the race for the US Mid-Terms in 2022 heats up, many are wondering if AI will be able to predict the winners. While AI has become quite adept at analyzing data and making predictions, US elections are notoriously unpredictable. In 2018, for example, the Democrats unexpectedly lost control of the House, despite predictions that they would maintain a majority. And in 2020, Donald Trump shocked the world by winning reelection, despite most polls showing he would lose. So can AI really predict who will win in 2022? The answer is maybe. AI will be able to take into account a wide range of factors, from poll numbers to fundraising totals to social media buzz. But ultimately, US elections are still largely determined by factors that are impossible to predict, such as which candidate gets the most votes on Election Day. As a result, predicting the US Mid-Term winners in 2022 is still very much a guessing game.
How to Know if Your Dataset Has Enough Features for Logistic or Multinomial Classification - How to Know if Your Dataset Has Enough Features for Logistic or Multinomial Classification. In machine learning, logistic and multinomial classification are two of the most popular methods for categorizing data. But before you can use either of these methods, you need to make sure that your dataset has enough features. In this blog post, we'll show you how to determine whether your dataset has enough features for logistic or multinomial classification.
Can AI predicts the tournament winner and golden booth for the FIFA World Cup Football Soccer 2022 in Qatar? - Can AI predicts the tournament winner and golden booth for the FIFA World Cup Football Soccer 2022 in Qatar? With the FIFA World Cup looming soon, fans around the world are wondering who will take home the coveted trophy. While many people have their own opinion on who the favorite is, one thing is for sure: no one knows for sure. However, that hasn't stopped people from trying to predict the outcome using various methods, including artificial intelligence (AI). So, can AI accurately predict the winner of the 2022 FIFA World Cup? Let's take a look.
How Microsoft’s Cortana Stacks Up Against Siri and Alexa in Terms of Intelligence? - How Microsoft's Cortana Stacks Up Against Siri and Alexa in Terms of Intelligence? It seems like everyone these days has a voice assistant. Whether you're using Apple's Siri, Amazon's Alexa, or Microsoft's Cortana, these handy little programs are always there to help you with the weather forecast, setting timers, and playing your favorite tunes. But how do they stack up against each other in terms of intelligence? Let's take a closer look.
What Would Be the Best Way to Prove That an AI Is Sentient and Not Just Mimicking Human Behavior? - What Would Be the Best Way to Prove That an AI Is Sentient and Not Just Mimicking Human Behavior?
Will No-Code and AI ever make us all software developers? - Will No-Code and AI ever make us all software developers? In recent years, there has been a growing trend of "no-code" platforms and tools that allow users to create complex applications without a single line of code. At the same time, artificial intelligence is becoming more and more advanced, capable of completing tasks that were once considered impossible for machines to do. So, the question is: will no-code platforms and AI ever make us all software developers? Let's take a look.
How AI is Impacting Smartphone Longevity – Best Smartphones 2023 - How AI is Impacting Smartphone Longevity - Best Smartphone 2023 One of the ways AI can help improve smartphone longevity is through battery optimization. Battery optimization is the process of making sure that your smartphone's battery is being used in the most efficient way possible. AI can help by learning your usage patterns and making adjustments accordingly. For example, if you typically use your phone for browsing the web and checking social media in the morning, AI can make sure that your battery is charged enough to last throughout the day.
How to make your laptop last longer with AI – Best laptops in 2022 – 2023 - How to make your laptop last longer with AI - Best laptopn in 2022-2023 With the rapid development of technology, it's no surprise that laptops are becoming more and more advanced. In fact, many laptops now come equipped with artificial intelligence (AI) capabilities. But what does this mean for the longevity of your laptop? Will AI help or hinder your laptop's lifespan? Let's take a closer look.
Can AI Really Predict Lottery Results? We Asked an Expert. - Can AI Really Predict Lottery Results? We Asked an Expert. We've all been there. You're in the grocery store line, idly scratching off a lottery ticket, when you start to daydream about what you would do with all that money. A new house? A yacht? Early retirement? But then reality sets in and you remember your chances of winning are pretty much nil. Or are they? We recently came across an article claiming that artificial intelligence can predict lottery results with near-perfect accuracy. This got us thinking: could AI really be used to beat the odds and guarantee a win? We decided to ask an expert.
AI and The Climate Bill: Why We Should All Be Incentivized to Save the Planet - AI and the Climate Bill: Why We Should All Be Incentivized to Save the Planet. As global temperatures continue to rise, it's more important than ever that we all do our part to save the planet. That's why I'm a big proponent of the climate bill that was just introduced in Congress. This bill would provide a much-needed financial incentive for people to make greener choices that would help reduce their carbon footprint. Here's a closer look at why this bill is so important and how it would work.
What is the Best Machine Learning Algorithms for Imbalanced Datasets - What is the Best Machine Learning Algorithms for Imbalanced Datasets In machine learning, imbalanced datasets are those where one class heavily outnumbers the others. This can be due to the nature of the problem or simply because more data is available for one class than the others. Either way, imbalanced datasets can pose a challenge for machine learning algorithms. In this blog post, we'll take a look at which machine learning algorithms are best suited for imbalanced datasets and why they tend to perform better than others.
Google’s Carbon Copy: Is Google’s Carbon Programming language the Right Successor to C++? - Is Google's Carbon Programming language the Right Successor to C++? For years, C++ has been the go-to language for high-performance systems programming. But with the rise of multicore processors and GPUs, the need for a language that can take advantage of parallelism has never been greater. Enter Carbon, Google's answer to the problem. But is it the right successor to C++?
Benefits and Drawbacks of Working Remotely in Africa: Has Africa fully embraced hybrid teams, digital workspace and the use of remote workers? - Benefits and Drawbacks of Working Remotely in Africa Has Africa fully embraced hybrid teams, digital workspace and the use of remote workers There are a number of advantages to working remotely in Africa. First, it allows businesses to tap into a larger pool of talent. With more people working remotely, businesses can hire the best employees, regardless of location. Second, it can help reduce costs. With no need for office space or equipment, businesses can save money by having employees work remotely. Finally, it can promote a better work-life balance. With no need to commute, employees can have more time for family and hobbies.
What is machine learning and how does Netflix use it for its recommendation engine? - What is machine learning and how does Netflix use it for its recommendation engine? Machine learning is a field of artificial intelligence that Netflix uses to create its recommendation algorithm. The goal of machine learning is to teach computers to learn from data and make predictions based on that data. To do this, Netflix employs Machine Learning Engineers, Data Scientists, and software developers to design and build algorithms that can automatically improve over time. The Netflix recommendations engine is just one example of how machine learning can be used to improve the user experience. By understanding what users watch and why, the recommendations engine can provide tailored suggestions that help users find new shows and movies to enjoy. Machine learning is also used for other Netflix features, such as predicting which shows a user might be interested in watching next, or detecting inappropriate content. In a world where data is becoming increasingly important, machine learning will continue to play a vital role in helping Netflix deliver a great experience to its users.
What are the top 10 algorithms every software engineer should know by heart? - What are the top 10 algorithms every software engineer should know by heart? As a software engineer, you're expected to know a lot about algorithms. After all, they are the bread and butter of your trade. But with so many different algorithms out there, how can you possibly keep track of them all? Never fear! We've compiled a list of the top 10 algorithms every software engineer should know by heart. From sorting and searching to graph theory and dynamic programming, these are the algorithms that will make you a master of your craft. So without further ado, let's get started!
What are some ways we can use machine learning and artificial intelligence for algorithmic trading in the stock market? - What are some ways we can use machine learning and artificial intelligence for algorithmic trading in the stock market? Machine learning is a subfield of artificial intelligence (AI) that focuses on the development of computer programs that can access data and use it to learn for themselves. In recent years, machine learning has made great strides in a number of different industries, and the stock market is no exception. Here, we'll take a look at how machine learning can be used for algorithmic trading in the stock market.
What are some ways to increase precision or recall in machine learning? - What are some ways to increase precision or recall in machine learning? In machine learning, recall is the ability of the model to find all relevant instances in the data while precision is the ability of the model to correctly identify only the relevant instances. A high recall means that most relevant results are returned while a high precision means that most of the returned results are relevant. Ideally, you want a model with both high recall and high precision but often there is a trade-off between the two. In this blog post, we will explore some ways to increase recall or precision in machine learning
How can I get someone’s IP from WhatsApp? - How can I get someone's IP from WhatsApp? First the person must be online Your phone must be rooted And then install busybox And then install any command prompt from google playstore like termux Close anything that uses internet by clicking disable on all apps who use internet and then open whatsapp and try to make a voice call or a video call with that person and then during the call open Termux and type this command : netstat -n If the connection was really peer 2 peer as whatsapp says his IP must be one of the foreign IP Addresses you would see on their Terminal.
What are the top 3 methods used to find Autoregressive Parameters in Data Science? - What are the top 3 methods used to find Autoregressive Parameters in Data Science? In order to find autoregressive parameters, you will first need to understand what autoregression is. Autoregression is a statistical method used to create a model that describes data as a function of linear regression of lagged values of the dependent variable. In other words, it is a model that uses past values of a dependent variable in order to predict future values of the same dependent variable.
How do you make a Python loop faster? - How do you make a Python loop faster? Programmers are always looking for ways to make their code more efficient. One way to do this is to use a faster loop. Python is a high-level programming language that is widely used by developers and software engineers. It is known for its readability and ease of use. However, one downside of Python is that its loops can be slow. This can be a problem when you need to process large amounts of data. There are several ways to make Python loops faster. One way is to use a faster looping construct, such as C. Another way is to use an optimized library, such as NumPy. Finally, you can vectorize your code, which means converting it into a format that can be run on a GPU or other parallel computing platform. By using these techniques, you can significantly speed up your Python code.
What are the top 10 most insane myths about computer programmers? - What are the top 10 most insane myths about computer programmers? 1. Programmers are all socially awkward nerds who live in their parents' basements. 2. Programmers only care about computers and have no other interests. 3. Programmers are all genius-level intellects with photographic memories. 4. Programmers can code anything they set their minds to, no matter how complex or impossible it may seem. 5. Programmers only work on solitary projects and never collaborate with others. 6. Programmers write code that is completely error-free on the first try. 7. All programmers use the same coding languages and tools. 8. Programmers can easily find jobs anywhere in the world thanks to the worldwide demand for their skills. 9. Programmers always work in dark, cluttered rooms with dozens of monitors surrounding them. 10. Programmers can't have successful personal lives because they spend all their time working on code."
What are the top 5 common Python patterns when using dictionaries? - What are the top 5 common Python patterns when using dictionaries? In Python, a dictionary is a data structure that allows you to store data in a key/value format. This is similar to a Map in Java. A dictionary is mutable, which means you can add, remove, and update elements in a dictionary. Dictionaries are unordered, which means that the order in which you add elements to a dictionary is not preserved. There are many different ways to use dictionaries in Python. In this blog post, we will explore some of the most popular patterns for using dictionaries in Python.
Top 10 ways for software engineers or developers to gain more power in their companies? - Top 10 ways for software engineers or developers to gain more power in their companies? 1. Get involved in decision-making processes. 2. Speak up when you have an idea or perspective to share. 3. Become a mentor or coach to others. 4. Be a thought leader by writing blog posts or articles, giving talks, or teaching classes. 5. Develop relationships with people in other departments or companies. 6. Join or create employee resource groups. 7. Serve on committees or working groups. 8. Volunteer for special projects. 9. Network outside of work hours. 10. Make sure your performance review focuses on your accomplishments.
Which programming language produces binaries that are the most difficult to reverse engineer? - Which programming language produces binaries that are the most difficult to reverse engineer? Reverse engineering is the process of taking something apart in order to figure out how it works. In the context of software, this usually means taking a compiled binary and figuring out what high-level programming language it was written in, as well as what the program is supposed to do. This can be difficult for a number of reasons, but one of the biggest factors is the level of optimization that was applied to the code during compilation.
What are the top 10 Wonders of computing and software engineering? - What are the top 10 Wonders of computing and software engineering? Computer science and software engineering are fascinating fields that continue to evolve and surprise us. In this blog post, we'll explore the top 10 wonders of computer science and software engineering. From self-driving cars to artificial intelligence, these are the technologies that are shaping our world.
What are the top 100 Free IQ Test Questions and Answers – Train and Elevate Your Brain - What are the top 100 Free IQ Test Questions and Answers - Train and Elevate Your Brain. Mensa IQ tests are among the most popular intelligence tests in the world. But what are they for? In this blog post, we'll be discussing the different Mensa IQ tests and what they're meant to assess. 1. The first Mensa IQ test is called the Culture Fair Intelligence Test, or CFIT. This test is designed to minimize the influence of cultural biases on a person's score. The CFIT is made up of four subtests, each of which measures a different type of cognitive ability. 2. The second Mensa IQ test is called the Stanford-Binet Intelligence Scale, or SBIS. The SBIS is a revision of an earlier intelligence test that was used by the US military to screen recruits during World War I. Today, the SBIS is commonly used to diagnose learning disabilities in children. 3. The third Mensa IQ test is called the Universal Nonverbal Intelligence Test, or UNIT. As its name suggests, the UNIT is a nonverbal intelligence test that can be administered to people of all ages, regardless of their native language. 4. The fourth and final Mensa IQ test is called the Wright Scale of Human Ability, or WSHA. The WSHA was developed by William Herschel Wright, a British psychologist who also served as the first president of Mensa International. Like the other tests on this list, the WSHA consists of four subtests that measure different aspects of cognitive ability.
How to find common elements in two unsorted arrays with sizes n and m avoiding double for loop? - How to find common elements in two unsorted arrays with sizes n and m avoiding double for loop? One of the most straight forward ways to find common elements in two arrays is by using a double for loop. This approach is simple to understand and implement but it is not very efficient. The time complexity of this algorithm is O(n*m) where n and m are the size of the two arrays respectively. The reason for this is because we are looping through both arrays completely which takes a lot of time. Furthermore, this approach also uses a lot of extra space because we are storing the common elements in a new list.
Simple Linear Regression vs. Multiple Linear Regression vs. MANOVA: A Data Scientist’s Guide - Simple Linear Regression vs. Multiple Linear Regression vs. MANOVA: A Data Scientist's Guide As a data scientist, it's important to understand the difference between simple linear regression, multiple linear regression, and MANOVA. This will come in handy when you're working with different datasets and trying to figure out which one to use. Here's a quick overview of each method:
What’s the difference between a proxy and a VPN and why is one security stronger than the other? Which security feature is stronger and why? - What's the difference between a proxy and a VPN and why is one security stronger than the other? Which security feature is stronger and why? In the digital age, proxy servers and VPNs have become increasingly popular as people strive to protect their online privacy and security. But what exactly are these two devices, and how do they differ? A proxy server is a computer that acts as an intermediary between your device and the internet. When you connect to the internet through a proxy, your data is routed through the proxy server before it reaches its destination. This allows you to mask your IP address and remain anonymous online. VPNs, on the other hand, encrypt your data before it leaves your device. This creates a private tunnel that cannot be accessed by anyone except for you and the VPN server. As a result, VPNs offer a higher level of security than proxy servers. However, proxy servers are typically faster and more reliable than VPNs, making them a good choice for online activities that don't require a high level of security, such as web browsing or streaming video.
What are the Top 10 AWS jobs you can get with an AWS certification in 2022 plus AWS Interview Questions - What are the Top 10 AWS jobs you can get with an AWS certification in 2022 plus AWS Interview Questions. AWS certified professionals are in high demand across a variety of industries. AWS certs can open the door to a number of AWS jobs, including cloud engineer, solutions architect, and DevOps engineer. Here are the top 10 AWS jobs you can get with an AWS certification. 1. Cloud Engineer: Cloud engineers are responsible for designing, implementing, and managing cloud solutions. They work with customers to understand their needs and then design and implement the best cloud solution for their business. 2. Solutions Architect: Solutions architects work with customers to understand their business needs and then design and implement AWS solutions that meet those needs. They must have a deep understanding of AWS services and how they can be used to solve customer problems. 3. DevOps Engineer: DevOps engineers are responsible for developing and maintaining AWS infrastructure. They work closely with developers to ensure that code is deployed quickly and efficiently. They also work with operations teams to ensure that AWS infrastructure is scalable and reliable. 4. System Administrator: System administrators are responsible for managing AWS systems. They work with customers to provision and configure AWS resources, and they also monitor and troubleshoot AWS systems. 5. Database Administrator: Database administrators are responsible for designing, implementing, and maintaining databases on AWS. They work closely with developers to ensure that data is stored securely and efficiently. They also work with operations teams to ensure that database systems are highly available and scalable. 6. Network Administrator: Network administrators are responsible for designing, implementing, and managing networking solutions on AWS. They work closely with customers to understand their networking needs and then design and implement the best solution for their business. 7. Security Engineer: Security engineers are responsible for designing, implementing, and managing security solutions on AWS. They work closely with customers to understand their security needs and then design and implement the best security solution for their business. 8. Support Engineer: Support engineers are responsible for providing technical support to AWS customers. They work closely with customers to troubleshoot problems and provide resolution within agreed upon SLAs. 9 Sales Engineer: Sales engineers are responsible for working with sales teams to generate new business opportunities through the use of AWS products and services .They must have a deep understanding of AWS products and how they can be used by potential customers to solve their business problems .
What are the Top 5 things that can say a lot about a software engineer or programmer’s quality? - What are the Top 5 things that can say a lot about a software engineer or programmer's quality? When it comes to the quality of a software engineer or programmer, there are a few key things that can give you a good indication. First, take a look at their code quality. A good software engineer will take pride in their work and produce clean, well-organized code. They will also be able to explain their code concisely and confidently. Another thing to look for is whether they are up-to-date on the latest coding technologies and trends. A good programmer will always be learning and keeping up with the latest industry developments. Finally, pay attention to how they handle difficult problems. A good software engineer will be able to think creatively and come up with innovative solutions to complex issues. If you see these qualities in a software engineer or programmer, chances are they are of high quality.
How to Protect Yourself from Man-in-the-Middle Attacks: Tips for Safer Communication - How to Protect Yourself from Man-in-the-Middle Attacks: Tips for Safer Communication Man-in-the-middle attacks are one of the most common types of cyberattacks. They occur when a attacker intercepts communication between two parties and impersonates one or both of them. This can allow the attacker to gain access to sensitive information, such as passwords or financial data. Man-in-the-middle attacks can be very difficult to detect, but there are some steps you can take to protect yourself. First, be aware of the warning signs of a man-in-the-middle attack. These include unexpected changes in login pages, unexpected requests for personal information, and unusual account activity. If you see any of these warning signs, do not enter any sensitive information and contact the company or individual involved immediately. Second, use strong security measures, such as two-factor authentication, to protect your accounts. This will make it more difficult for attackers to gain access to your information. Finally, keep your software and operating system up to date with the latest security patches. This will help to close any potential vulnerabilities that could be exploited by attackers. By following these tips, you can help to keep yourself safe from man-in-the-middle attacks.
What is Problem Formulation in Machine Learning and Top 4 examples of Problem Formulation in Machine Learning? - What is Problem Formulation in Machine Learning and Top 4 examples of Problem Formulation in Machine Learning? Problem formulation is an essential part of the machine learning pipeline. Machine learning problems can be classified into four types: regression, classification, clustering, and ranking. Each type of problem has its own set of challenges and requires a different approach. For example, regression problems involve predicting a continuous value, such as the price of a stock, while classification problems involve predicting a discrete label, such as whether an email is spam or not. Clustering problems involve grouping data points into clusters, while ranking problems involve ordering data points from most to least similar. In each case, the goal is to find a model that can generalize from the training data to the test data. The choice of model will depend on the type of problem and the nature of the data. For instance, linear models are often used for regression problems, while decision trees are often used for classification problems. The challenge in machine learning is to find a model that performs well on the training data but also generalizes well to unseen data. This is where problem formulation comes in. By carefully defining the problem and choosing an appropriate model, we can increase the chances of finding a solution that works well in practice.
What are the Greenest or Least Environmentally Friendly Programming Languages? - What are the Greenest or Least Environmentally Friendly Programming Languages? Are you looking for a new programming language to learn? If you're interested in something that is both green and energy efficient, you might want to consider the Groeningen Programming Language (GPL). Developed by a team of researchers at the University of Groningen in the Netherlands, GPL is a relatively new language that is based on the C and C++ programming languages. Python and Rust are also used in its development. GPL is designed to be used for developing energy efficient applications. Its syntax is similar to other popular programming languages, so it should be relatively easy for experienced programmers to learn. And since it's open source, you can download and use it for free. So why not give GPL a try? It just might be the perfect language for your next project.
Why is there a lack of diversity among software engineers in tech companies in USA and Canada? - Why is there a lack of diversity among software engineers in tech companies in USA and Canada? Technology is a rapidly growing industry with a huge demand for qualified software engineers. However, there is a lack of diversity among software engineers in tech companies in the USA and Canada. Women and minorities are greatly underrepresented in the field of software engineering. This is due to several factors, including the misogynistic and racist culture of many tech companies. The lack of diversity among software engineers has a negative impact on the quality of products and services offered by tech companies. It also limits the ability of these companies to innovate and serve a wide range of customers. In order to increase diversity among software engineers, tech companies need to change their hiring practices and create an inclusive environment that values all types of people.
How do we know that the Top 3 Voice Recognition Devices like Siri Alexa and Ok Google are not spying on us? - How do we know that the Top 3 Voice Recognition Devices like Siri Alexa and Ok Google are not spying on us? Machine learning is a field of artificial intelligence (AI) concerned with the design and development of algorithms that learn from data. Machine learning algorithms have been used for a variety of tasks, including voice recognition, image classification, and spam detection. In recent years, there has been growing concern about the use of machine learning for surveillance and spying. However, it is important to note that machine learning is not necessarily synonymous with spying. Machine learning algorithms can be used for good or ill, depending on how they are designed and deployed. When it comes to voice-activated assistants such as Siri, Alexa, and OK Google, the primary concern is privacy. These assistants are constantly listening for their wake words, which means they may be recording private conversations without the user's knowledge or consent. While it is possible that these recordings could be used for nefarious purposes, it is also important to remember that machine learning algorithms are not perfect. There is always the possibility that recordings could be misclassified or misinterpreted. As such, it is important to weigh the risks and benefits of using voice-activated assistants before making a decision about whether or not to use them.
What are some jobs or professions that have become or will soon become obsolete due to technology, automation, and artificial intelligence? - What are some jobs or professions that have become or will soon become obsolete due to technology, automation, and artificial intelligence? Technology, automation, and artificial intelligence are changing the world as we know it. They are making some jobs obsolete and giving rise to new professions. For example, machine learning is automating many tasks that were previously done by human beings, such as data entry and analysis. As a result, many jobs that require these skills are disappearing. In their place, new jobs are being created for people who can code algorithms and train machine learning models. Similarly, artificial intelligence is changing the landscape of many professions. It is being used to automate tasks such as customer service, financial analysis, and even medical diagnosis. As a result, many jobs that have traditionally relied on human expertise are now being performed by machines. While this change can be disruptive, it also opens up new opportunities for people with the right skills.
What are some good datasets for Data Science and Machine Learning? - What are some good datasets for Data Science and Machine Learning? A dataset is a collection of data, usually presented in tabular form. Good datasets for Data Science and Machine Learning are typically those that are well-structured (easy to read and understand) and large enough to provide enough data points to train a model. The best datasets are often those that are open and freely available - such as the popular Iris dataset. However, there are also many commercial datasets available for purchase. In general, good datasets for Data Science and Machine Learning should be: - Well-structured - Large enough to provide enough data points - Open and freely available whenever possible
What is the single most influential book every Programmers should read - What is the single most influential book every Programmers should read As a programmer, you are constantly learning new technologies and skills. But what is the one book that you should read to help you become a better programmer? That's a tough question, but we're here to help. Keep reading to find out the most influential book for programmers.
What are popular hobbies among Software Engineers? - What are popular hobbies among Software Engineers? Software engineers are a unique bunch. They're passionate about their work and love to spend their free time tinkering with code. But what are they like outside of work? What are some of their favorite hobbies? We took a look at some popular pastimes among software engineers and compiled a list for you. Check it out!
Programming Languages used for Autopilot in Self Driving Cars like Tesla, Audi, BMW, Mercedes Benz, Volvo, Infiniti - What are Programming Languages used for Autopilot in Self Driving Cars like Tesla, Audi, BMW, Mercedes Benz, Volvo, Infiniti? Most self-driving cars on the market today use C programming language for their vehicle software. This is because C is a very robust and stable language that can be trusted for mission-critical applications. In addition, C is relatively easy to learn and has a wide range of features that make it well suited for automotive applications. However, there are some drawbacks to using C for self-driving cars. First, it is not a very concise language, so the code can be quite long and difficult to read. Second, C does not have built-in support for object-oriented programming, which is becoming increasingly important in the world of autonomous vehicles. As a result, many carmakers are starting to explore other languages for their autopilot systems, such as Java and Python.
Google interview questions for various roles and How to Ace the Google Software Engineering Interview? - Google interview questions for various roles and How to Ace the Google Software Engineering Interview? Google is one of the most sought-after employers in the world, known for their cutting-edge technology and innovative products. If you're lucky enough to land an interview with Google, you can expect to be asked some challenging questions. Google is known for their brainteasers and algorithmic questions, so it's important to brush up on your coding skills before the interview. However, Google also values creativity and out-of-the-box thinking, so don't be afraid to think outside the box when answering questions. product managers need to be able to think strategically about Google's products, while software engineers will need to demonstrate their technical expertise. No matter what role you're interviewing for, remember to stay calm and confident, and you'll be sure to ace the Google interview.
What are the pros and cons of working as a software engineer for Google or Microsoft versus starting your own startup like Zoom or Uber or Airbnb did when they started out? - What are the pros and cons of working as a software engineer for Google or Microsoft versus starting your own startup like Zoom or Uber or Airbnb did when they started out? Google and Microsoft are two of the most well-known and successful companies in the tech industry. They are both known for their cutting-edge products and their strong work culture. There are also some major differences between working at Google or Microsoft versus starting your own startup. Google and Microsoft are both very large companies, with hundreds of thousands of employees. They are also both very well established, with years of experience in the tech industry. Startups, on the other hand, are much smaller and less established. This can be both good and bad.
What is the Top Job in AI? Data Scientist or Machine Learning Engineer? - What is the Top Job in AI? Data Scientist or Machine Learning Engineer? A data scientist is someone who creates programming code and combines it with statistical knowledge to create insights from data. Machine learning (ML) is a field of inquiry devoted to understanding and building methods that 'learn', that is, methods that leverage data to improve performance on some set of tasks. The top job in all of AI is the machine learning engineer and NOT the data scientist.
Will software engineers ever stop being in demand? - Will software engineers ever stop being in demand? A software engineer is a person who applies the principles of software engineering to design, develop, maintain, test, and evaluate computer software. The term programmer is sometimes used as a synonym, but may also lack connotations of engineering education or skills. The question is "Will software engineers ever stop being in demand?" There are two schools of thought. Those with a background in business see developers as commodities and fully believe that programmers will program themselves out of a job field. The idea is that in some distant future, jobs like project manager, product manager, and marketing manager will still be critical but programmers themselves will be extinct as a result of the tools they created.
Requirements For Access to Electronics For Kids During Vacation - Requirements For Access to Electronics For Kids During Vacation We are living in a world where electronics are accessible easily and makes it very easy for our kids to get addicted to. It is important to create some boundaries to allow our kids to not get addicted to electronics and at the same time give them some access.
Is it better economically to run a car into the ground before buying a new one? Data driven answer - Is it better economically to run a car into the ground before buying a new one? Data driven answer Is it better to drive your car into the ground before buying a new one? You might think that’s an odd question, but there’s some logic to it. We all know cars are expensive, and many people feel they have to buy a new one as soon as theirs starts to show its age. But is that really the best way to go? Let’s take a closer look at the numbers. The advice I’ve always had (and followed) is that you should always EITHER: Buy a new car - keep it for 3 years - then trade it for a new one….OR… Buy a new car and keep it until it goes to the car crusher.
Is it good useful meaningful worthwhile to use register variables in C++? - Is it good useful meaningful worthwhile to use register variables in C++? The register keyword has been largely ignored by compilers for decades. In C, it prevents you from taking the address of a variable. But otherwise, most compilers ignore the hint it offers.
Techies and Geek Inspired Movies and TV Shows – Netflix Amazon Prime Video HBO YouTube TV - Techies and Geek Inspired Movies and TV Shows - Netflix Amazon Prime Video HBO YouTube TV If you're a movie buff or a geek, there's no doubt you love spending your free time watching films and TV shows that inspire your passions. And in the age of Netflix, Amazon Prime Video, and HBO, there's no shortage of inspiring content to watch. This blog post takes a look at some of the best geeky and tech-inspired movies and TV shows available on streaming services today. So whether you're a die-hard Star Wars fan or you can't get enough of Andy Griffith reruns, there's something for everyone in this roundup! As a software engineer who works long hours and go to kids activities after work, TV shows and movies help me relax after work. This blog is an aggregate of trailers, questions and answers about of Geek inspired Movies and TV Shows.
What are some coding anti-patterns that can easily slip through code reviews? - What are some coding anti-patterns that can easily slip through code reviews? Programmers are a notoriously irritable bunch. We're constantly getting in arguments with each other about the best way to do things. This is largely because there is no one "right" way to code - it's more of an art than a science. However, there are some coding practices that are universally agreed to be bad form. These are known as "coding anti-patterns," and they can easily slip through code reviews if you're not careful.
Algorithm and Tricks to save up to 30 cents per litre on Gas in USA and Canada - Algorithm and Tricks to save up to 30 cents per litre on Gas in USA and Canada Gas is getting very expensive and we are trying to help consumers save on Gas by providing you daily tricks to help you savc up to 30 cents per litre on Gas in USA and Canada.
What is the tech stack behind Google Search Engine? - What is the tech stack behind Google Search Engine? The technology stack that powers the Google Search Engine is immensely complex, and includes a number of sophisticated algorithms, technologies, and infrastructure components. At the heart of the system is the PageRank algorithm, which ranks pages based on a number of factors, including the number and quality of links to the page. The algorithm is constantly being refined and updated, in order to deliver more relevant and accurate results. In addition to the PageRank algorithm, Google also uses a number of other algorithms, including the Latent Semantic Indexing algorithm, which helps to index and retrieve documents based on their meaning. The search engine also makes use of a massive infrastructure, which includes hundreds of thousands of servers around the world.
Financial Independence and Legit Side Money Ideas For Techies and Geeks - Financial Independence and Legit Side Money Ideas For Techies and Geeks This blog is about Clever Questions, Answers, Posts, discussions, links about:: Financial Independence (FIRE), NFTs, options, entrepreneurship, legit side hustle, money making ideas, money making from home, bier money, make money from web scraping,
CyberSecurity – What are some things that get a bad rap, but are actually quite secure? - CyberSecurity - What are some things that get a bad rap, but are actually quite secure? 1- PGP 2- Very long passwords that are actually a sentence
Programming, Coding and Algorithms Questions and Answers - Programming, Coding and Algorithms Questions and Answers Coding is a complex process that requires precision and attention to detail. While there are many resources available to help learn programming, it is important to avoid making some common mistakes. One mistake is assuming that programming is easy and does not require any prior knowledge or experience. This can lead to frustration and discouragement when coding errors occur. Another mistake is trying to learn too much at once. Coding is a vast field with many different languages and concepts. It is important to focus on one area at a time and slowly build up skills. Finally, another mistake is not practicing regularly. Coding is like any other skill- it takes practice and repetition to improve. By avoiding these mistakes, students will be well on their way to becoming proficient programmers.
As a web developer can you explain why React is needed? - As a web developer can you explain why React is needed? The specific rationale for React is state management and efficient page updates, it’s underlying power comes not just from the structure and tooling provided by it being a framework, but also the shadow-DOM and component lifecycle that along with state management empower greater interactivity without very slow inefficient page updates.
Why can’t a macOs be installed in a Windows computer? - Why can't a macOs be installed in a Windows computer? that to happen. Not because they want to extract more money from hardware sales (Apple hardware is actually cheap for the quality you get anyway), not because they wouldn’t sell OS X as a product if they could.
How does a database handle pagination? - How does a database handle pagination? Some database languages provide helpful facilities that aide in implementing pagination. For example, many SQL dialects provide LIMIT and OFFSET clauses that can be used to emit up to n rows starting at a given row number. I.e., a “page” of rows. If the query results are sorted via ORDER BY and are generally unchanged between successive invocations, then that can be used to implement pagination.
How many spaces is a tab in Java, Rust, C++, Python, C#, Powershell, Golang, Javascript - How many spaces is a tab in Java, Rust, C++, Python, C#, Powershell, Golang, Javascript. A tab is not made out of spaces. It is a tab, whether in Java, Python, Rust, or generic text file editing. It is represented by a single Unicode character, U+0009.
Tech Jobs and Career at FAANG (now MAANGM): Facebook Meta Amazon Apple Netflix Google Microsoft - Tech Jobs and Career at FAANG (now MAANGM): Facebook Meta Amazon Apple Netflix Google Microsoft. The FAANG companies (Facebook, Amazon, Apple, Netflix, Google, and Microsoft) are some of the most sought-after employers in the tech industry. They offer competitive salaries and benefits, and their employees are at the forefront of innovation. This blog is about Clever Questions, Answers, Resources, Feeds, Discussions about Tech jobs and careers at MAANGM companies including: Amazon AWS Netflix Google (Alphabet) Microsoft
AWS Azure Google Cloud Certifications Testimonials and Dumps - AWS Azure Google Cloud Certifications Testimonials and Dumps Do you want to become a Professional DevOps Engineer, a cloud Solutions Architect, a Cloud Engineer or a modern Developer or IT Professional, a versatile Product Manager, a hip Project Manager? Therefore Cloud skills and certifications can be just the thing you need to make the move into cloud or to level up and advance your career.
Food For Thought – Top 100 Delicious Homemade Cuisine From All over the World - Food For Thought - Top 100 Delicious Homemade Cuisine From All over the World Who doesn't remember their favourite food from home when they were growing up? That delicious taste stays with us forever. We can move all over the World, but the thought of our favourite home-cooked meals always make us happy.
Breaking News – Top Stories - Breaking News - Top Stories, Google Trends, updated hourly Breaking News - Top Stories From all over the world. World News. Hourly Updated News Feed from Reddit, Twitter, Medium, Quora and top news agency and media around the world (CNN, Fox News, USA Today, MSNBC, ABC News, Al Jazeera, CBC, BBC, SkyNews, etc.).
Facebook, Instagram, Apple and Google Apps Search Ads Secrets – Make Money From Your Products - Apple and Google Apps Search Ads Secrets There are billions of Apps out there and it is becoming harder and harder to stand out. You don't want to spend countless of hours developing your dream app just to have less than 10 downloads per month. This blog is an aggregate of the best secrets of Apple and Google Apps search ads for successful App developers.
Azure Solutions Architect Expert Certification Questions And Answers Dumps - Azure Solutions Architect Expert Certification Questions And Answers Dumps This exam measures your ability to accomplish the following technical tasks: design identity, governance, and monitoring solutions; design data storage solutions; design business continuity solutions; and design infrastructure solutions. Top 50 Azure Solutions Architect Expert Certification Questions And Answers Dumps
Top 100 Data Science and Data Analytics and Data Engineering Interview Questions and Answers - Top 100 Data Science and Data Analytics and Data Engineering Interview Questions and Answers Data Science is a blend of various tools, algorithms, and machine learning principles with the goal to discover hidden patterns from the raw data. How is this different from what statisticians have been doing for years? The answer lies in the difference between explaining and predicting: statisticians work a posteriori, explaining the results and designing a plan; data scientists use historical data to make predictions.
Machine Learning Engineer Interview Questions and Answers - Machine Learning Engineer Interview Questions and Answers: Machine learning is the study of computer algorithms that improve automatically through experience. It is seen as a subset of artificial intelligence. Machine Learning explores the study and construction of algorithms that can learn from and make predictions on data. You select a model to train and then manually perform feature extraction. Used to devise complex models and algorithms that lend themselves to a prediction which in commercial use is known as predictive analytics.
DevOps Interviews Question and Answers and Scripts - DevOps Interviews Question and Answers and Scripts. Below are several dozens DevOps Interviews Question and Answers and Scripts to help you get into the top Corporations in the world including FAANGM (Facebook, Apple, Amazon, Netflix, Google and Microsoft).
What are the top 10 Commandments of Options Trading Strategies - 10 Commandments of Options Trading Strategies Option strategies are the simultaneous, and often mixed, buying or selling of one or more options that differ in one or more of the options' variables. Call options, simply known as calls, give the buyer a right to buy a particular stock at that option's strike price. Conversely, put options, simply known as puts, give the buyer the right to sell a particular stock at the option's strike price. This is often done to gain exposure to a specific type of opportunity or risk while eliminating other risks as part of a trading strategy. A very straightforward strategy might simply be the buying or selling of a single option; however, option strategies often refer to a combination of simultaneous buying and or selling of options.
How crypto could change the world and Why Cryptocurrency was invented in the first place. - How crypto could change the world and Why Cryptocurrency was invented in the first place. People used to pay each other in gold and silver. Difficult to transport. Difficult to divide. Paper money was invented. A claim to gold in a bank vault. Easier to transport and divide. Banks gave out more paper money than they had gold in the vault. They ran “fractional reserves”. A real money maker. But every now and then, banks collapsed because of runs on the bank.
Data Sciences – Top 400 Open Datasets – Data Visualization – Data Analytics – Big Data – Data Lakes - Data Sciences - Top 400 Open Datasets - Data Visualization - Data Analytics - Big Data - Data Lakes Data science is an interdisciplinary field that uses scientific methods, processes, algorithms and systems to extract knowledge and insights from structured and unstructured data, and apply knowledge and actionable insights from data across a broad range of application domains. In this blog, we are going to provide popular open source data sets, data visualization, data analytics and data lakes.
Djamgatech: Multilingual and Platform Independent Cloud Certification and Education App for AWS, Azure, Google Cloud - Djamgatech: Multilingual and Platform Independent Cloud Certification and Education App for AWS, Azure, Google Cloud. Djamgatech is the ultimate Cloud Education Certification App. It is an EduFlix App for AWS, Azure, Google Cloud Certification Prep, School Subjects, Python, Math, SAT, etc.
Jobs, Career, Salary, Total Compensation, Interview Tips at FAANGM: Facebook, Apple, Amazon, Netflix, Google, Microsoft - Jobs, Career, Salary, Total Compensation, Interview Tips at FAANGM: Facebook, Apple, Amazon, Netflix, Google, Microsoft. This blog is about Clever Questions, Answers, Resources, Links, Discussions, Tips about jobs and careers at FAANGM companies: Facebook, Apple, Amazon, AWS, Netflix, Google, Microsoft, Linkedin.
Electric Cars – Autonomous Cars – Self driving cars : Tesla, CyberTruck, EV, Volt, Wayne, Nissan Leaf, Electric Bikes, e-bikes, i-cars, smart cars - Electric Cars - Autonomous Cars - Self driving cars BNEF outlines that electric vehicles (EVs) will hit 10% of global passenger vehicle sales in 2025, with that number rising to 28% in 2030 and 58% in 2040. According to the study, EVs currently make up 3% of global car sales.
Microsoft Azure Administrator Certification Questions and Answers Dumps – AZ 104 - Microsoft Azure Administrator Certification Questions and Answers Dumps - AZ 104 Microsoft Azure Administrator AZ 104 is one of the most popular Microsoft Azure Administrator certification exams. To pass this exam, you need to have a good understanding of Microsoft Azure and its various components. The best way to prepare for this exam is to use this Microsoft AZ 104 dumps. These dumps will help you to understand the Microsoft Azure platform and its various features. In addition, you will also get an idea about the types of questions that are asked in this exam. With the help of these dumps, you can easily pass the Microsoft AZ 104 exam. Below are the top 100 Microsoft Azure Administrator Certification Questions and Answers Dumps
Videoconferencing Tools: Zoom vs Microsoft Teams vs Google Meet vs GoToMeeting vs WebEx vs Slack – making the right choice - Videoconferencing Tools: Zoom vs Microsoft Teams vs Google Meet vs GoToMeeting vs WebEx vs Slack - making the right choice
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Laptop 101 – Pick a laptop for me – MacOS or Windows or Chrome – Apple MacBook or Google ChromeBook or Microsoft Surface or Dell or HP or Lenovo - Laptop 101 - Pick a laptop for me - MacOS or Windows or Chrome - Apple MacBook or Google ChromeBook or Microsoft Surface or Dell or Hp or Lenovo
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AWS Certified Developer Associate Exam Prep

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Welcome to AWS Certified Developer Associate Exam Preparation: Definition and Objectives, Top 65 Questions and Answers dump, White papers, Courses, Labs and Training Materials, Exam info and details, References, Jobs, Others AWS Certificates

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:

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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 no prerequisites for taking the Developer-Associate examination, but here are the recommended AWS Knowledge:

One or more years of hands-on experience developing and maintaining an AWS based application
In-depth knowledge of at least one high-level programming language
Understanding of core AWS services, uses, and basic AWS architecture best practices
Proficiency in developing, deploying, and debugging cloud-based applications using AWS
Ability to use the AWS service APIs, AWS CLI, and SDKs to write applications
Ability to identify key features of AWS services
Understanding of the AWS shared responsibility model
Understanding of application lifecycle management
Ability to use a CI/CD pipeline to deploy applications on AWS
Ability to use or interact with AWS services
Ability to apply a basic understanding of cloud-native applications to write code
Ability to write code using AWS security best practices (e.g., not using secret and access keys in the code, instead using IAM roles)
Ability to author, maintain, and debug code modules on AWS
Proficiency writing code for serverless applications
Understanding of the use of containers in the development process

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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.

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

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.
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.
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.

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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 :

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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

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

A.

Reference: https://aws.amazon.com/caching/session-management/

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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

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

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

A. and B.

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

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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:

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.

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.

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

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

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

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 messages 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 –

A set of Ec2 instances to process the videos.

These (Ec2 instances) will be spun up by an autoscaling group.

SQS Queues to maintain the processing messages.

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 congure 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 congure 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 configuring the Lambda function

B. Ensure that the NACL ID’s are mentioned when configuring the Lambda function

C. Ensure that the Security Group ID’s are mentioned when configuring the Lambda function

D. Ensure that the VPC Flow Log ID’s are mentioned when configuring 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: C.

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

Answer: YAML

Reference: AppSpec Files on an EC2/On-Premises Compute Platform

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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.
Transform:
Name: ‘AWS::Include’
Parameters:
Location: ‘s3://MyAmazonS3BucketName/MyFileName.yaml’

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

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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.

Overview of Amazon Web Services

Architecting for the Cloud: AWS Best Practices

AWS Security Best Practices whitepaper, August 2016

AWS Well-Architected Framework whitepaper, November 2017 Version 1.3 DVA-C01 Page |2

Architecting for the Cloud AWS Best Practices whitepaper, February, 2016

Practicing Continuous Integration and Continuous Delivery on AWS Accelerating Software Delivery with DevOps whitepaper, June 2017

Microservices on AWS whitepaper, September 2017

Serverless Architectures with AWS Lambda whitepaper, November 2017

Optimizing Enterprise Economics with Serverless Architectures whitepaper, October 2017

Running Containerized Microservices on AWS whitepaper, November 2017

Blue/Green Deployments on AWS whitepaper, August 2016

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Online Training and Labs for AWS Certified Developer Associates Exam

A Cloud Guru

Linux Academy

Udemy

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AWS Developer Associates Jobs

inRealtimeJobs.com

Weworkremotely

StackOverflow AWS Jobs

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

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%

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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.

Developing on AWS: An instructor-led live or virtual 3-day course

https://aws.amazon.com/certification/faqs/

AWS Digital Training: Application Services, Developer Tools, and other services covered on the exam

Prepare for AWS Certification

AWS EC2 Instance info

AWS Certified Developer Associate Exam Guide

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Other Relevant and Recommended AWS Certifications

AWS Certification Exams Roadmap

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AWS Certified Cloud Practitioner

AWS Certified Solutions Architect – Associate

AAWS Certified Developer – Associate

AWS Certified SysOps Administrator – Associate

AWS Certified Solutions Architect – Professional

AWS Certified DevOps Engineer – Professional

AWS Certified Big Data Specialty

AWS Certified Advanced Networking.

AWS Certified Security – Specialty

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Welcome to AWS Certified Developer Associate Exam Preparation: Definition and Objectives, Top 65 Questions and Answers dump, White papers, Courses, Labs and Training Materials, Exam info and details, References, Jobs, Others AWS Certificates

What is the AWS Certified Developer Associate Exam?

AWS Certified Developer – Associate Practice Questions And Answers Dump

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?

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

If you are looking for an all-in-one solution to help you prepare for the AWS Cloud Practitioner Certification Exam, look no further than this AWS Cloud Practitioner CCP CLFC01 book below.

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

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

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

Q6: A Lambda deployment package contains:

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?

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?

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

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

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?

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?

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

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

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

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

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

Q20: What are the main benefits of IAM groups?

Q21: What are benefits of using AWS STS?

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

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?

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

Q25: An AWS Region contains:

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?

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?

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?

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

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

Q32: A Lambda deployment package contains:

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?

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

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

Answer:

Answer:

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

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?

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

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

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

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

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?

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?

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?

Answer:

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?

Answer:

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?

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

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?

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?

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

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.

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

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

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

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?

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

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

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

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

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?

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?

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

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?

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?

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?

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?

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

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

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

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

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

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Exam Content Outline

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?

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?

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?

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?