INTERVIEW QUESTIONS WITH ANSWERS FOR AWS

1. What is AWS?

AWS (Amazon Web Services) is a cloud computing platform provided by Amazon
that offers a wide range of cloud services, including computing power, storage, database management, and more.

2. What is the difference between EC2 and S3?

EC2 (Elastic Compute Cloud) is a virtual server in the cloud that allows users to run applications, while S3 (Simple Storage Service) is a scalable storage service for storing and retrieving data.

3. What is Auto Scaling in AWS?

Auto Scaling is a feature in AWS that allows you to automatically adjust the number of EC2 instances based on the demand. It ensures that you have enough capacity to handle traffic spikes and reduces costs during periods of low demand.

4. What is the difference between RDS and DynamoDB?

RDS (Relational Database Service) is a managed relational database service in AWS that supports various database engines like MySQL, PostgreSQL, etc. DynamoDB, on the other hand, is a fully managed NoSQL database service provided by AWS.

5. What is the purpose of CloudFormation in AWS?

CloudFormation is a service in AWS that allows you to automate the provisioning and management of AWS resources. It uses YAML or JSON templates to define the infrastructure and enables you to create, update, or delete resources as a single unit.

6. What is the meaning of IAM in AWS?

IAM (Identity and Access Management) is a service in AWS that enables you to manage access to AWS resources securely. It allows you to create and manage users, groups, roles, and permissions to control who can access your resources.

7. How does AWS Lambda work?

AWS Lambda is a serverless computing service that allows you to run code without provisioning or managing servers. You can write your code, upload it to Lambda, and the service automatically scales and executes the code in response to events.

8. What is the significance of VPC in AWS?

VPC (Virtual Private Cloud) is a logically isolated section of the AWS cloud where you can launch resources like EC2 instances, RDS databases, and more. It provides control over your network environment, including IP address range selection, subnets, route tables, and network gateways.

9. How does Amazon S3 ensure data durability?

Amazon S3 achieves data durability by storing copies of data across multiple devices and facilities within a region. It automatically replicates data across different availability zones to provide high durability and availability.

10. What is the difference between Amazon SNS and SQS?

Amazon SNS (Simple Notification Service) is a publish-subscribe messaging service that enables message delivery to multiple subscribers, whereas Amazon SQS (Simple Queue Service) is a managed message queue service that decouples the components of a distributed application.