Free DVA-C02 mock test – Exam 1

AWS Certified Developer – Associate (DVA-C02)

Free AWS Developer Associate practice exam for DVA-C02 preparation.

Use this free AWS Certified Developer Associate practice exam to review serverless development, API Gateway, Lambda, DynamoDB, SQS, SNS, Step Functions, CloudFormation, security, and deployment scenarios.

10 exam-style questions Free DVA-C02 mock test Detailed option explanations No signup required

Start Practice Exam 1 below. Answer each question first, then use the explanations to understand why the correct AWS service or configuration is the best fit.

AWS Certified Developer - Associate (DVA-C02) Practice Exam 1

Free AWS Certified Developer Associate DVA-C02 practice exam 1 with detailed explanations for every option.

1 / 10

Question

A developer maintains an Amazon API Gateway REST API that is used by production customers through an application frontend. A new version of the API introduces several breaking changes. The developer must let internal developers test the new version without affecting current customers and with the least operational overhead. What should the developer do?

Which option meets the requirement?

A. Create a separate development stage for the API and give testers the invoke URL for that stage.

B. Create a new AWS account only for the beta API and duplicate all resources.

C. Add a query string parameter that switches production traffic between old and new application code.

D. Replace the existing production stage with the beta deployment during low-traffic hours.

2 / 10

Question

A media application stores video files in Amazon S3 and serves users around the world. Traffic spikes quickly and users report buffering when they stream popular videos. Which change will provide the largest performance improvement?

Which option meets the requirement?

A. Configure S3 Intelligent-Tiering on the bucket.

B. Use Amazon CloudFront with the S3 bucket as the origin.

C. Use Route 53 weighted routing for the existing S3 website endpoint.

D. Enable S3 Cross-Region Replication and ask users to choose a Region manually.

3 / 10

Question

A developer is adding AWS X-Ray to an application that handles personally identifiable information on Amazon EC2. The application currently writes trace messages that might contain sensitive values. The company requires that sensitive values never leave the instance in trace data. What should the developer do?

Which option meets the requirement?

A. Manually instrument the application and control exactly which metadata, annotations, and subsegments are sent to X-Ray.

B. Enable automatic instrumentation and rely on X-Ray to redact all sensitive values.

C. Send the traces to Amazon Macie before they reach X-Ray.

D. Encrypt the sensitive values in CloudWatch Logs and send the same values to X-Ray.

4 / 10

Question

A Python microservice uses AWS X-Ray. A developer wants to filter the X-Ray service map and traces by customer tier and request outcome during testing. Which X-Ray feature should the developer add to the trace data?

Which option meets the requirement?

A. Annotations for the customer tier and outcome fields.

B. Metadata only, because metadata is indexed for search.

C. CloudWatch metric filters on the X-Ray daemon logs.

D. Segment names that concatenate every customer tier and outcome.

5 / 10

Question

A team uses one AWS CloudFormation template to deploy a web application to development, test, and production. The RDS instance class and the number of web servers must be different in each environment. What is the best way to support this requirement?

Which option meets the requirement?

A. Create template parameters for environment-specific values and pass different parameter values for each stack.

B. Hard-code the production values in the template and edit the template before each deployment.

C. Create a separate AWS account for every parameter value.

D. Store the values in the Outputs section and import them during stack creation.

6 / 10

Question

An application running on Amazon EC2 cannot read objects from an S3 bucket. The instance is in a private subnet and has an IAM role attached. Which combination of checks is the most appropriate first troubleshooting step? (Choose TWO.)

Which option meets the requirement?

A. Verify that the instance profile role allows the required s3:GetObject action on the bucket objects.

B. Verify that the private subnet has a route through a NAT gateway or an S3 VPC endpoint for S3 access.

C. Add the AWS account root user access keys to the instance environment variables.

D. Disable S3 bucket encryption so that the instance can read the objects.

E. Increase the EC2 instance size to add more network bandwidth.

7 / 10

Question

A Lambda function connects to an Amazon RDS for MySQL database. The developer finds the database username and password stored as plaintext in the function code. Which solution follows security best practices?

Which option meets the requirement?

A. Move the credentials to AWS Secrets Manager and grant the Lambda execution role permission to read the secret.

B. Store the credentials in the Lambda function description.

C. Commit the credentials to a private Git repository and load them during deployment.

D. Place the credentials in an S3 object with public read access disabled.

8 / 10

Question

A team needs to test a new REST API contract in API Gateway before the backend services are implemented. The API should return sample responses immediately for integration testing. What should the developer configure?

Which option meets the requirement?

A. A mock integration with method and integration responses.

B. A VPC link to a private Network Load Balancer.

C. An HTTP proxy integration to the production endpoint.

D. A Lambda authorizer that returns the sample response.

9 / 10

Question

A developer creates an S3 bucket for hourly status files and a Lambda function to process each new file. What should the developer configure to invoke the function automatically when new objects are uploaded?

Which option meets the requirement?

A. An S3 event notification for ObjectCreated events that targets the Lambda function.

B. A CloudFront function on viewer request.

C. An EventBridge scheduled rule that runs once per month.

D. An S3 lifecycle rule that transitions the object to S3 Glacier Instant Retrieval.

10 / 10

Question

An API Gateway REST API in us-east-2 must use a custom domain name with CloudFront edge optimization. The developer has an ACM public certificate. Where must the certificate be created or imported for the edge-optimized custom domain?

Which option meets the requirement?

A. In us-east-1.

B. In us-east-2 only.

C. In every Region where users access the API.

D. In the same VPC as the API Gateway API.

Your score is

The average score is 60%

What Practice Exam 1 covers

API Gateway stages, mock integrations, and custom domains
CloudFront with Amazon S3 for high-throughput global delivery
AWS X-Ray instrumentation and safe tracing practices
CloudFormation parameters and cross-resource references
Lambda access to RDS, S3 event processing, and Secrets Manager

Who should take this free mock test

Use this DVA-C02 practice exam if you are preparing for AWS Certified Developer – Associate and want focused, free practice with detailed explanations.

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FAQ

Is this DVA-C02 practice exam free?

Yes. This AWS Certified Developer Associate mock test is free to open and retake.

Does this replace hands-on AWS practice?

No. Use it with hands-on practice for Lambda, API Gateway, DynamoDB, SQS, SNS, Step Functions, CloudFormation, IAM, and AWS developer tools.

How should I review missed questions?

Read every option explanation, identify the AWS developer pattern being tested, and review the relevant service behavior before retaking the free practice exam.

Free AWS Developer Associate Practice Exam 1 | DVA-C02 Mock Test

Free AWS Developer Associate practice exam for DVA-C02 preparation.

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Correct Answer: A, B

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What Practice Exam 1 covers

Who should take this free mock test

FAQ

Is this DVA-C02 practice exam free?

Does this replace hands-on AWS practice?

How should I review missed questions?

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