AWS Interview Questions
EC2, S3, IAM, VPC, Lambda, load balancing, auto scaling and core AWS cloud services.
61 questions
Popular Searches
1. What is Amazon EC2 and when would you use it?
easyCompute 6 mins2. What are the different Amazon S3 storage classes?
mediumStorage 7 mins3. What is the difference between IAM roles, users, and policies?
mediumSecurity 7 mins4. What is a VPC and why is it important in AWS?
mediumNetworking 7 mins5. What is AWS Lambda and how does serverless computing work?
mediumCompute 7 mins6. How do Elastic Load Balancers work in AWS?
mediumNetworking 7 mins7. What is Auto Scaling and how does it work in AWS?
mediumScaling 7 mins8. What is the difference between Amazon RDS and DynamoDB?
mediumDatabases 7 mins9. What is Amazon CloudFront and how does a CDN work?
mediumNetworking 7 mins10. What is the difference between Security Groups and NACLs?
mediumSecurity 7 mins11. What is the difference between S3, EBS, and EFS?
mediumStorage 7 mins12. What is AWS CloudFormation and infrastructure as code?
mediumDevOps 7 mins13. What is the difference between SQS and SNS?
mediumMessaging 7 mins14. What is the difference between Regions and Availability Zones?
easyFundamentals 6 mins15. What is Amazon Route 53 and how does it handle DNS?
mediumNetworking 7 mins16. What is Amazon ElastiCache and when should you use it?
mediumDatabases 7 mins17. What is Amazon CloudWatch and how is it used for monitoring?
mediumObservability 7 mins18. What is the AWS Shared Responsibility Model?
easySecurity 6 mins19. What are the main EC2 instance types and their use cases?
mediumCompute 7 mins20. How do you secure an Amazon S3 bucket?
mediumSecurity 7 mins21. What is Amazon API Gateway and when would you use it?
mediumNetworking 7 mins22. What is the difference between ECS and EKS?
hardContainers 7 mins23. What is the difference between Spot, Reserved, and On-Demand instances?
mediumCost 6 mins24. What is the AWS Well-Architected Framework?
mediumArchitecture 6 mins25. What is AWS KMS and how does encryption work in AWS?
mediumSecurity 6 mins26. What is the difference between Multi-AZ and Read Replicas in RDS?
hardDatabases 7 mins27. What is the difference between a NAT Gateway and an Internet Gateway?
hardNetworking 7 mins28. What are AWS Step Functions and when would you use them?
mediumOrchestration 7 mins29. How do you optimize costs in AWS?
mediumCost 8 mins30. What are the disaster recovery strategies in AWS?
hardArchitecture 9 mins31. What is Cloud Computing?
easyCloud Fundamentals 5 mins32. IaaS vs PaaS vs SaaS: What's the Difference?
easyCloud Fundamentals 5 mins33. What is Amazon EC2?
easyCompute 5 mins34. What is Amazon S3?
easyStorage 5 mins35. What is a VPC (Virtual Private Cloud)?
easyNetworking 6 mins36. What is AWS IAM?
easySecurity & Identity 6 mins37. What is a Load Balancer in AWS?
easyNetworking 5 mins38. What is AWS Lambda?
mediumServerless 6 mins39. Regions vs Availability Zones in AWS
mediumGlobal Infrastructure 6 mins40. What is Amazon RDS?
mediumDatabases 6 mins41. What is Amazon CloudFront?
mediumNetworking 6 mins42. What Is the Difference Between a Public and Private Subnet?
mediumNetworking 6 mins43. What Is the Difference Between Elasticity and Scalability in the Cloud?
mediumCloud Concepts 6 mins44. What Is Serverless Computing on AWS?
mediumCompute 6 mins45. What Is a NAT Gateway and When Do You Need One?
mediumNetworking 6 mins46. What Is Amazon Route 53 and How Does It Work?
mediumNetworking 7 mins47. What Is the AWS Shared Responsibility Model?
hardSecurity 8 mins48. What Is Amazon DynamoDB and When Should You Use It?
hardDatabases 8 mins49. What Is Amazon CloudWatch and How Is It Used for Monitoring?
hardMonitoring 8 mins50. What Is an S3 Bucket Policy and How Does It Control Access?
hardStorage 8 mins51. What Is the Difference Between Horizontal and Vertical Scaling in the Cloud?
hardCloud Concepts 7 mins52. What Is a CDN and How Does Amazon CloudFront Use It?
hardNetworking 7 mins53. How Does IAM Evaluate a Request Across SCPs, Permission Boundaries, Identity and Resource Policies?
hardSecurity & Identity 9 mins54. How Do AssumeRole Chains Work, and What Problem Does ExternalId Solve?
hardSecurity & Identity 9 mins55. What Are the VPC Endpoint Types, and Why Does Private Access Still Fail With One Configured?
hardNetworking 9 mins56. How Do You Design VPC Egress to Control NAT Gateway and Data Transfer Costs?
mediumNetworking 8 mins57. How Do S3 Consistency, Prefixes and Request Patterns Affect Application Behaviour at Scale?
hardStorage 9 mins58. How Do KMS Key Policies, Grants and IAM Interact for Cross-Account Decryption?
hardSecurity & Identity 10 mins59. What Causes Lambda Cold Starts, and How Do Concurrency Limits and Throttling Behave Under Load?
hardServerless 10 mins60. What Are the Trade-Offs Between Multi-AZ and Multi-Region Failover?
hardArchitecture & Resilience 10 mins61. How Do You Diagnose an AWS Access Denied Error With No Obvious Cause?
hardTroubleshooting 10 mins