AWS Q&A | Frequently asked in top MNC's

This comprehensive technical document serves as a complete preparation guide for Amazon Web Services (AWS) interviews targeted at top multinational corporations. It covers foundational cloud concepts, core infrastructure components, and advanced architectural patterns.

1. Fundamental AWS Concepts

2. EC2 and Compute Services

3. Storage Services (S3, EBS, EFS)

4. Networking and VPC

5. IAM and Security

6. Database Services

7. Advanced Architecture and Design

8. Serverless Computing

9. Container Orchestration

10. Monitoring, Logging, and Optimization

11. Disaster Recovery and Business Continuity

12. Scenario-Based Questions

13. Cost Optimization

14. AWS Infrastructure as Code

Fundamental AWS Concepts: Overview of global infrastructure (Regions, Availability Zones, Edge Locations), the AWS Well-Architected Framework, the Shared Responsibility Model, and cloud deployment models (IaaS, PaaS, SaaS).

Compute & Serverless Services: Amazon EC2 instance types, pricing models (On-Demand, Reserved, Spot Instances, Savings Plans), Auto Scaling Groups, Elastic Load Balancing (ALB, NLB, GWLB), AWS Lambda, and Elastic Beanstalk.

Storage Services: Deep dive into Amazon S3 (storage classes, lifecycle policies, encryption methods), Amazon EBS volume types, and Amazon EFS.

Networking & Security: Virtual Private Clouds (VPCs), subnets, Internet Gateways, NAT Gateways, Security Groups vs. Network ACLs, and multi-tier network architectures.

Databases, DevOps & Operations: Database optimization strategies (Amazon Aurora, RDS Read Replicas, DynamoDB), Infrastructure as Code (CloudFormation, CDK, Terraform), monitoring, logging, and disaster recovery planning.