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Study Guide: AWS Developer - Associate (DVA-C02) Exam Survival Guide
Source: https://www.fatskills.com/aws-101/chapter/aws-developer-associate-dva-c02-exam-survival-guide

AWS Developer - Associate (DVA-C02) Exam Survival Guide

By Fatskills Exam Guides Team — the exam nerds behind 28,500+ quizzes and 2.1M practice questions across 500+ global exams.

⏱️ ~1 min read

Pattern (official guide): 65 Q total (50 scored + 15 unscored), scaled 100–1000, pass 720. Item types: MCQ/MR. 

Must-do (80/20)

  • Serverless app dev: Lambda config, eventing, DLQs/destinations, API Gateway, Step Functions.
  • Storage/data: DynamoDB (PK/SK, GSIs, TTL, DAX), S3 classes/lifecycle/OAC, RDS/Aurora vs DynamoDB.
  • Messaging/async: SQS FIFO vs std, SNS fan-out, EventBridge patterns.
  • Auth & security: Cognito (OIDC/SAML), KMS, IAM policies/roles, SSM Param/Secrets.
  • Observability: CW logs/metrics/alarms/X-Ray; retries with backoff + idempotency.
  • CI/CD: SAM/CDK basics, CodeBuild/Deploy/Pipeline.

Top traps

  • Over-architecting multi-Region when multi-AZ fits.
  • DDB hot partitions; using query where scan needed (or vice versa).
  • S3 public access & OAI/OAC confusion.

Last-48h

  • Redo: Lambda-VPC access pattern, DDB design mini-cases, API-GW auth, S3 + CloudFront OAC, Step Functions error handling.
  • One-pager: service substitutions (SQS vs SNS vs EventBridge; Aurora vs DynamoDB).
  • Skim content outline & weights. 

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