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AWS Interview Question and Answers

AWS Interview Question and Answers

Last Updated on Jul 26, 2023, 2k Views


AWS Interview Question and Answers

1.What is AWS?

AWS Course stands for Amazon Web Services. It is a comprehensive, on-demand cloud computing platform provided by Amazon. AWS offers a wide range of services, including computing power, storage options, networking, databases, machine learning, analytics, and more.

2.What are the key components of AWS?

AWS Course comprises various key components, such as:EC2 (Elastic Compute Cloud) for scalable computing instances.

S3 (Simple Storage Service) for object storage.

RDS (Relational Database Service) for managed databases.

VPC (Virtual Private Cloud) for creating isolated network environments.

Lambda for serverless computing.

IAM (Identity and Access Management) for access control, and many more.

3.What is Amazon S3?

Amazon S3 (Simple Storage Service) is an object storage service that offers scalable and durable data storage in the cloud. It allows users to store and retrieve any amount of data at any time through the internet. S3 is commonly used for data backup, hosting static websites, storing large media files, and serving as a content delivery network (CDN).

4.Explain the different storage classes in Amazon S3.

Amazon S3 offers several storage classes:Standard: The default storage class with high durability and availability.

Intelligent-Tiering: Automatically moves data between frequent and infrequent access tiers.

Infrequent Access (IA): Suitable for less frequently accessed data.

One Zone-IA: Similar to IA but stores data in a single availability zone, reducing costs.

Glacier: For long-term archival storage with retrieval times ranging from minutes to hours.

5.What is EC2?

EC2 (Elastic Compute Cloud) is a web service that provides resizable compute capacity in the cloud. It allows users to launch virtual machines (instances) with different operating systems and configurations. EC2 instances can be easily scaled up or down based on demand, making it ideal for various applications and workloads.

6.What is the difference between Amazon RDS and Amazon DynamoDB?

Amazon RDS (Relational Database Service):

It is used for hosting relational databases like MySQL, PostgreSQL, Oracle, and SQL Server. It handles routine database tasks like patching, backups, and scaling, making it easy to set up, operate, and scale a relational database in the cloud.

Amazon DynamoDB:

It is a fully managed NoSQL database service, offering high-performance and seamless scalability. DynamoDB is ideal for applications requiring low-latency access to large datasets and supports both document and key-value data models.

7.What is AWS Lambda?

AWS Course Lambda is a server less computing service that allows developers to run code without provisioning or managing servers. It automatically scales the application in response to incoming traffic or events. Lambda is commonly used for event-driven applications, data processing, and building server less architectures.

8.What is Amazon VPC?

Amazon VPC (Virtual Private Cloud) is a logically isolated virtual network within the AWS cloud. It enables users to define their own virtual network topology, including subnets, route tables, and security groups. VPC provides control over network configuration and security, making it possible to launch AWS Course resources in a private, isolated environment.

9.Explain the concept of Auto Scaling in AWS.

Auto Scaling is a feature in AWS that automatically adjusts the number of EC2 instances based on predefined scaling policies. It helps maintain application availability and ensures that the number of instances matches the demand. Auto Scaling can scale both vertically (changing instance types) and horizontally (adding or removing instances) based on traffic or resource utilization.

10.What are AWS Security Groups?

AWS Course Security Groups act as virtual firewalls for EC2 instances. They control inbound and outbound traffic by allowing or denying specific protocols, ports, and IP addresses. Security Groups are stateful, meaning if you allow traffic for a specific port, the response traffic is automatically allowed, simplifying network security configurations.

Remember to tailor your answers based on your experience and knowledge. These questions provide a good starting point for preparing for an AWS interview. Good luck!

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