AWS Certified Developer Associate: Cheat Sheet and Exam Breakdown
If you are asking how do I pass DVA-C02, the honest answer starts with knowing exactly what sits in front of you on exam day. The AWS Certified Developer - Associate exam (code DVA-C02) rewards people who have actually built and debugged things on AWS, not people who memorised service names. This breakdown lays out the format, the domain weights, and where your study hours will pay off most.
The DVA-C02 format at a glance
The exam is 65 questions in 130 minutes. That works out to roughly 120 seconds per question, which is more generous than it sounds once you hit the scenario questions that take a paragraph to read. Delivery is linear, so you move forward through the questions; plan to flag anything slow and come back rather than stalling. Scoring runs on a scaled range from 100 to 1000, and the pass mark is 720. Because it is a scaled score, you do not need to get 720 out of 1000 raw questions right; the scaling accounts for question difficulty, so treat 720 as a comfortable-margin target rather than a knife edge.
Where the marks live: domain weights
The four domains are not equal, and the weighting tells you where to invest. These figures come straight from Amazon Web Services' published exam guide (verified 24 August 2026).
| Domain | Weight |
|---|---|
| Development with AWS Services | 32% |
| Security | 26% |
| Deployment | 24% |
| Troubleshooting and Optimization | 18% |
Development with AWS Services is the largest slice at nearly a third of the paper, so this is where under-preparing hurts most. But notice that Security at 26% is close behind. Many candidates treat security as a bolt-on and lose easy marks on IAM policy evaluation, encryption choices, and least-privilege patterns. Deployment at 24% and Troubleshooting and Optimization at 18% round out the rest, and the last domain in particular rewards hands-on time reading logs and reasoning about failures rather than reading documentation.
A working cheat sheet by domain
Development with AWS Services. Know how to write and wire Lambda functions, work with API Gateway, and use the SDK against DynamoDB and S3. Understand event-driven patterns with SQS, SNS, and EventBridge, and be fluent in idempotency, retries, and pagination.
Security. Be able to read an IAM policy and predict the outcome. Know the difference between resource-based and identity-based policies, when to use temporary credentials from STS, how KMS envelope encryption works, and where Secrets Manager fits versus environment variables.
Deployment. Cover CodePipeline, CodeBuild, and CodeDeploy, plus deployment strategies like blue/green and canary. Understand how CloudFormation and SAM define and update stacks, and what a change set actually does.
Troubleshooting and Optimization. Live in CloudWatch Logs, metrics, and X-Ray traces. Practise diagnosing throttling, cold starts, and permission errors from symptoms, because that is how the questions are framed.
How to study without wasting hours
Reading alone plateaus fast on this exam. The fastest way to find the gaps in your knowledge is to sit realistic questions under time pressure, review every wrong answer, and go back to the console to reproduce the scenario. A focused mock test pack lets you rehearse the 65-question, 130-minute rhythm so exam day feels familiar rather than novel. Treat each DVA-C02 practice exam as a diagnostic: your score matters less than the pattern of which domains keep tripping you.
Our AWS Certified Developer - Associate mock test mirrors the real domain mix, so an AWS Developer Associate mock test session pushes you hardest exactly where the real paper carries the most weight. When you are consistently clearing the 720 threshold across full-length attempts with time to spare, you are ready to book.
Final word
The DVA-C02 is a fair exam for developers who build on AWS regularly. Anchor your revision to the domain weights, spend real time in the console for the troubleshooting domain, and use a practise exam to convert knowledge into exam-day speed. When you want structured, timed reps, get a mock test pack and work through it until 720 stops feeling like a stretch.