Practice DVA-C02 exam questions across 4 domains. Detailed answer explanations. Start with 10 free questions — no signup required.
Loading practice session...
AWS Developer Associate is a AWS certification with approximately 65 questions in 130 minutes. The table below shows the exam weighting published for each domain, so you can decide where to spend your study time instead of working through the syllabus in order.
| Domain | Exam weight | What it covers |
|---|---|---|
| Development with AWS Services | 32% | Develop with AWS services |
| Security | 26% | Implement secure applications |
| Deployment | 24% | Deploy AWS applications |
| Troubleshooting and Optimization | 18% | Troubleshoot and optimize applications |
A passing study plan usually trails the weighting: spend the most sessions on Development with AWS Services (32%), then check the next domain down before moving on. If your accuracy on a high-weight domain stays under 80%, more practice there is worth more than another pass at a low-weight topic.
These questions come from the AWS Developer Associate practice bank. Read the rationale even when you answer correctly — the explanation is usually where the exam technique lives.
A web application lets users upload profile photos directly to Amazon S3. The team wants to avoid routing the bytes through its servers while still preventing a user from overwriting another user's photo. Which approach gives the safest direct upload?
Answer: A. Option A is correct because a presigned PUT URL scoped to the user's own object key with a short expiry lets the browser upload directly while the key constraint prevents overwriting another user's photo. Granting s3:PutObject on the whole bucket lets any authenticated user replace any object. Random names and anonymous writes give no authorization, and a proxy function abandons the direct-upload goal.
An orders table in DynamoDB uses a customer identifier as its partition key and an order timestamp as its sort key, and the service is fast for per-customer history. A new screen must list every order placed on a given day across all customers, and the team cannot accept a full table scan. Which table change should the team make?
Answer: A. Option A is correct because creating a global secondary index whose partition key is the order date gives the new screen a direct lookup path. Option B is incorrect because a local index must share the base table partition key and cannot group orders by day. Option C is incorrect because recovery restores historical state and does not answer the query. Option D is incorrect because more capacity makes a scan faster without removing the full-table read.
An order service writes each accepted order to a DynamoDB table. Clients retry when a call times out, and a retried request sometimes overwrites an order that the service already accepted and began processing. The service must reject a stale update without introducing a separate locking layer. Which DynamoDB feature should the developer use?
Answer: A. Option A is correct. A conditional write with a version attribute makes DynamoDB reject the update unless the current version matches the value the client read, so duplicate retries fail instead of overwriting a newer state. Option B is incorrect because a strongly consistent read does not stop two clients from later writing over each other. Option C is incorrect because DynamoDB Accelerator caches reads and does not prevent duplicate writes. Option D is incorrect because a global secondary index changes how items are queried and does not add write-side concurrency control.
You can answer 10 DVA-C02 practice questions free without creating an account. Each one is graded instantly with a written explanation. A free account keeps your progress, and the full bank (300+ questions) unlocks with a subscription.
The DVA-C02 exam is organised into 4 domains: Development with AWS Services (32%), Security (26%), Deployment (24%), Troubleshooting and Optimization (18%). The weighting above shows how much of the exam each domain represents, so budget study time in the same proportion.
The DVA-C02 exam has approximately 65 questions in 130 minutes, with a passing score of 720. Practice sets here are scored the same way as the real exam so you can see whether you are above or below the line before test day.
Start with Development with AWS Services, the highest-weighted domain, then work down the list. Answer a mixed set after each domain pass — mixing domains forces you to identify what a question is asking before recalling the content, which is what the real exam does.
No. These are original practice questions written against the published DVA-C02 exam objectives. They mirror the style, difficulty, and domain weighting of the real exam, but the actual exam content is confidential and is not reproduced here.
A practice set shows you where you are; the rest of the DVA-C02 cluster shows you what to do next. Work through the domain checklist, then return here for another mixed set.