Interview Questions on AWS.
1. What is AWS?
Amazon Web Services (AWS) is a cloud computing platform offering a wide range of services such as computing power, storage, and databases.
2. What are the core services of AWS?
The core AWS services include EC2 (compute), S3 (storage), RDS (databases), Lambda (serverless), and VPC (networking).
3. What is an EC2 instance?
An EC2 instance is a virtual server in AWS used to run applications on the cloud.
4. What is S3 in AWS?
Amazon S3 (Simple Storage Service) is an object storage service that allows you to store and retrieve data at any time.
5. What is IAM in AWS?
AWS Identity and Access Management (IAM) is a service that controls access to AWS resources securely.
6. What is an AWS Availability Zone?
An Availability Zone (AZ) is a physically separate data center within an AWS Region.
7. What is an AWS Region?
An AWS Region is a geographical area with multiple Availability Zones for high availability.
8. What is AWS Lambda?
AWS Lambda is a serverless computing service that runs code in response to events.
9. What is Amazon RDS?
Amazon RDS (Relational Database Service) is a managed database service that supports MySQL, PostgreSQL, SQL Server, and more.
10. What is Amazon VPC?
Amazon Virtual Private Cloud (VPC) allows users to create an isolated network within AWS.
Advanced AWS Interview Questions
11. What is the difference between EBS and S3?
EBS (Elastic Block Store) provides persistent block storage for EC2, while S3 is an object storage service for large-scale data.
12. What is Auto Scaling?
Auto Scaling automatically adjusts the number of EC2 instances based on demand.
13. What is Elastic Load Balancer (ELB)?
ELB distributes incoming traffic across multiple EC2 instances to improve fault tolerance.
14. What is AWS CloudFront?
AWS CloudFront is a content delivery network (CDN) that caches data at edge locations for faster access.
15. What is AWS Route 53?
AWS Route 53 is a scalable domain name system (DNS) web service.
16. What is AWS Elastic Beanstalk?
Elastic Beanstalk is a platform-as-a-service (PaaS) solution for deploying and managing applications.
17. What is AWS Snowball?
AWS Snowball is a physical data transport solution for transferring large amounts of data to AWS.
18. What is AWS KMS?
AWS Key Management Service (KMS) is a managed encryption key service for securing data.
19. What is AWS SNS?
Amazon Simple Notification Service (SNS) is a messaging service for sending notifications.
20. What is AWS SQS?
Amazon Simple Queue Service (SQS) is a message queuing service for decoupling application components.
21. What is AWS CloudFormation?
AWS CloudFormation allows you to define and provision infrastructure as code.
22. What is AWS Redshift?
AWS Redshift is a data warehousing service optimized for online analytical processing.
23. What is AWS DynamoDB?
Amazon DynamoDB is a fully managed NoSQL database service.
24. What is AWS Glue?
AWS Glue is a managed ETL (extract, transform, load) service.
25. What is AWS Security Hub?
AWS Security Hub provides centralized security management across AWS accounts.
26. What is AWS WAF?
AWS Web Application Firewall (WAF) protects web applications from common threats.
27. What is AWS Shield?
AWS Shield is a managed Distributed Denial of Service (DDoS) protection service.
28. What is AWS Trusted Advisor?
AWS Trusted Advisor provides recommendations for best practices on security, cost, and performance.
29. What is AWS Cost Explorer?
AWS Cost Explorer helps analyze and visualize AWS cost and usage data.