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AWS

EC2, S3, Lambda, IAM, VPC and the well-architected pillars.

22 questions
EC2S3LambdaIAMVPCDynamoDB

Sample Questions (22 live)

S3Easy

What is the difference between S3 and EBS?

AmazonAccentureRead →
LambdaMedium

What is AWS Lambda and when would you use it?

AmazonDeloitteRead →
VPCEasy

Region vs Availability Zone — what's the difference and why does it matter for uptime?

AmazonInfosysTCSRead →
IAMEasy

IAM users vs roles vs policies — how do you grant an app access to AWS without hardcoding keys?

AmazonTCSCognizantRead →
S3Easy

What are the S3 storage classes, and how do you use them to cut storage cost?

AmazonInfosysDeloitteRead →
VPCEasy

Security Groups vs Network ACLs — how do they differ, and when do you use each?

AmazonCognizantAccentureRead →
VPCMedium

How do you design a VPC with public and private subnets?

AmazonMicrosoftDeloitteRead →
LambdaMedium

How do Auto Scaling and load balancing work together for elastic, resilient apps?

AmazonMicrosoftDeloitteRead →
DynamoDBMedium

RDS vs DynamoDB — how do you choose between them?

AmazonMicrosoftDeloitteRead →
DynamoDBMedium

How does the DynamoDB partition key affect performance, and what is a hot partition?

AmazonGoogleMicrosoftRead →
LambdaMedium

SQS vs SNS vs EventBridge — which messaging service for which job?

AmazonMicrosoftDeloitteRead →
LambdaMedium

How does Lambda concurrency work, and how do you handle throttling and downstream limits?

AmazonMicrosoftGoogleRead →
S3Medium

How do you secure an S3 bucket and prevent accidental public exposure?

AmazonMicrosoftDeloitteRead →
S3Medium

How does CloudFront (CDN) improve performance, and what do you cache vs not?

AmazonGoogleMicrosoftRead →
IAMMedium

Secrets Manager vs Parameter Store vs KMS — how do you handle secrets and encryption?

AmazonMicrosoftDeloitteRead →
S3Medium

What are the main levers for optimizing AWS cost without hurting reliability?

AmazonDeloitteMicrosoftRead →
DynamoDBHard

Multi-AZ vs read replicas in RDS — what does each solve?

AmazonMicrosoftDeloitteRead →
VPCHard

How do you architect a highly available, fault-tolerant application on AWS?

AmazonMicrosoftGoogleRead →
DynamoDBHard

What is DynamoDB single-table design, and why do experts use it?

AmazonGoogleMicrosoftRead →
VPCHard

What are the AWS Well-Architected Framework pillars, and how do you use them?

AmazonDeloitteMicrosoftRead →
LambdaHard

How do you build a reliable event-driven serverless pipeline (and handle poison messages)?

AmazonMicrosoftGoogleRead →
VPCHard

How do you connect VPCs and on-prem networks — peering, Transit Gateway, PrivateLink?

AmazonMicrosoftDeloitteRead →

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