awsinterviewquestions

aws/interviewq.md

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+Amazon Web Services (AWS) stands as the leading cloud service provider globally, offering a wide array of cloud computing services. It's the preferred choice for top companies like Netflix, Airbnb, Spotify, and many more due to its scalability, reliability, and extensive feature set. AWS was started in 2006 with 3 types of services such as storage, computing, and messaging. After, it enhanced its network by providing all the required services based on the market trends.
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+Here, we'll cover the 50+ AWS Interview Questions and Answers that are suitable for both freshers and Experienced professionals. This resource aims to provide you with the knowledge necessary to excel in AWS interviews, covering a broad spectrum of AWS concepts including computing, storage, networking, security, databases, serverless computing, and more.
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+Table of Content
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+Basic AWS Interview Questions
+Intermediate AWS Interview Questions
+Advanced AWS Interview Questions
+Scenario Based AWS Interview Questions
+Basic AWS Interview Questions
+1. What Is AWS And Why Is It So Popular?
+Amazon Web Services (AWS), is an important cloud computing platform known for its wide service offerings. Its popularity is developed through its scalability, cost-effectiveness, and global infrastructure. Businesses increased the AWS to efficiently scale operations, reduce costs, and innovate rapidly.
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+2. Explain The Key Components Of AWS.
+AWS provides the fundamental components crucial for cloud computing such as EC2 provides scalable computing capabilities, S3 offers storage for all kinds of files, RDS manages many kinds of databases, and IAM ensures secured access through addressing Authentication and Authorization. These components collectively empower the users to create and deploy various applications seamlessly.
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+3. What Is An EC2 Instance And How Does It Work?
+An EC2 instance stands for Elastic Cloud Compute service, It is a virtual server in the cloud. When we launch this, it will run the selected operating system with a specified application stack. For instance, you can deploy a web server or a database in this EC2 service. It can also be configured for specific computing needs, making it a flexible and scalable solution.
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+4. Describe The Difference Between S3 And EBS In AWS.
+S3 ( Simple Storage Service ) is an object storage service suitable for storing various data types of files that can accessed through the internet. In contrast, EBS ( Elastic Block storage ) is a block-level storage attached to EC2 instances, offering persistent and high-performance storage for applications like databases. EBS provides the raw storage hardware helpful for I/O operations where as S3 comes with pre configured file system. For understaning think of S3 as a file storage system and EBS as a hard drive.
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+5. How Does Auto Scaling Work In AWS?
+Auto Scaling is an aws service that provides dynamically adjusts, on running the number of EC2 instances based on traffic demand. For instance, during the high traffic periods, Auto Scaling adds instances , improving optimal performance as per the policies configuration. Conversely, while during low traffic, it will reduce the number of instances , optimizes the cost efficiency maintaining high availability.