DVA-C02 Free Practice Test — AWS Developer Associate
4 real exam-style questions across all 4 official blueprint domains. Answer each question to reveal the full explanation — then see exactly where to focus.
A developer has an AWS Lambda function that processes messages from an Amazon SQS queue. The function is configured with a batch size of 10, reserved concurrency of 5, and a timeout of 5 minutes. The SQS queue has a large backlog, and CloudWatch metrics show high throttling (Throttles) for the Lambda function. The function is idempotent and can process up to 100 messages in a single invocation. What is the MOST effective way to increase throughput without increasing the reserved concurrency?
Select an answer to reveal the explanation and AI Tutor
A developer has an AWS Lambda function that needs to read objects from an S3 bucket in another account. The Lambda function's execution role includes an IAM policy that allows s3:GetObject on the bucket. The bucket owner has added a bucket policy that grants s3:GetObject to the Lambda execution role. However, the Lambda function receives Access Denied errors. The S3 bucket uses SSE-KMS for encryption. What is the most likely cause?
Select an answer to reveal the explanation and AI Tutor
A developer is using AWS CodeDeploy with a blue/green deployment strategy to update an application running on Amazon ECS with the Fargate launch type. After the new (green) task set is created and traffic is shifted to it, users immediately report errors when trying to write data. The developer discovers that the green task set is connecting to a different database than the blue task set. The database endpoints are configured in the ECS task definition. What is the simplest way to prevent this issue in future deployments?
Select an answer to reveal the explanation and AI Tutor
A developer deployed a new version of an AWS Lambda function that is part of a serverless application. The function uses an Amazon DynamoDB table as a data store. After deployment, the developer notices that the function's latency has increased significantly for some requests. CloudWatch traces show that the increase is due to DynamoDB throttle events. The function is configured with a reserved concurrency of 100 and the DynamoDB table has 5 read capacity units (RCUs) and 5 write capacity units (WCUs). What is the most effective way to reduce the throttling while maintaining application performance?
Select an answer to reveal the explanation and AI Tutor
Answer all 4 questions to see your domain score breakdown
Unlock all 65+ DVA-C02 questions
AI Tutor after every question, per-domain analytics, spaced repetition, daily challenges — and every other certification on the platform.
Cancel anytime · One plan covers every certification
DVA-C02 Practice Test — FAQ
Is this DVA-C02 practice test really free?
Yes — all 4 questions on this page are free with no account required. For the full 65-question bank, AI Tutor, domain analytics, and spaced repetition, a JT Exams subscription starts from £9.99/month with a 7-day free trial.
How realistic are these DVA-C02 practice questions?
Every question is written by Amazon Web Services-certified engineers against the official DVA-C02 exam blueprint. Questions follow the same wording style and scenario complexity as the actual exam. They are original questions — not brain dumps — so you learn the underlying concepts, not just memorised answers.
How many questions are on the actual DVA-C02 exam?
The DVA-C02 exam contains approximately 65 questions and must be completed within 130 minutes. The passing score is 720/1000.
What domains does the DVA-C02 cover?
The DVA-C02 covers 4 domains: Development with AWS Services (null%), Security (null%), Deployment (null%), Troubleshooting and Optimization (null%). This practice test includes questions from every domain.