Free Amazon DVA-C02 Exam Questions

Become Amazon Certified with updated DVA-C02 exam questions and correct answers

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Total 550 Questions | Updated On: Apr 01, 2026

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Question 1

A developer is building a three-tier web application that should be able to handle a minimum of 5000 requestsper minute. Requirements state that the web tier should be completely stateless while the applicationmaintains session state for the users.How can session data be externalized, keeping latency at the LOWEST possible value?

A : Create an Amazon RDS instance, then implement session handling at the application level to leverage adatabase inside the RDS database instance for session data storage.

B : Implement a shared file system solution across the underlying Amazon EC2 instances, then implementsession handling at the application level to leverage the shared file system for session data storage.

C : Create an Amazon ElastiCache (Memcached) cluster, then implement session handling at theapplication level to leverage the cluster for session data storage.

D : Create an Amazon DynamoDB table, then implement session handling at the application level toleverage the table for session data storage.

Answer: C

Question 2

A company has an AWS Step Functions state machine named myStateMachine. The company configured aservice role for Step Functions. The developer must ensure that only the myStateMachine state machine canassume the service role.

A : " Condition " : { " ArnLike " : { " aws " : " arn:aws:states:ap-south-1:111111111111:stateMachine " } }

B : " Condition " : { " ArnLike " : { " aws " : " arn:aws:states:ap-south-1:*:stateMachine " } }

Answer: A

Question 3

A healthcare company is developing a multi-tier web application to manage patient records that are in anAmazon Aurora PostgreSQL database cluster. The company stores the application code in a Git repositoryand deploys the code to Amazon EC2 instances.The application must comply with security policies and follow the principle of least privilege. The companymust securely manage database credentials and API keys within the application code. The company must havethe ability to rotate encryption keys on demand.Which solution will meet these requirements?

A : Store database credentials and API keys in AWS Secrets Manager. Use AWS managed AWS KMSkeys. Set up automatic key rotation. Use the AWS SDK to retrieve secrets.

B : Store the database credentials and API keys in AWS Secrets Manager. Use customer managed AWSKMS keys. Set up automatic key rotation. Create a key policy in the application to retrieve secrets byusing the AWS SDK.

C : Store the database credentials in the application code. Separate credentials by using environmentspecific branches that have restricted access to the code repositories.

D : Store the database credentials and API keys as parameters in AWS Systems Manager Parameter Store.Encrypt the credentials and API keys with AWS managed AWS KMS keys. Use the AWS SDK toretrieve secrets.

Answer: A

Question 4

A developer is configuring an AWS Lambda function to consume messages from an Amazon SQS queue byusing an event source mapping. The function consumes up to 10 messages for each invocation. The functionsends data from each message to a third-party API.The developer must configure at-least-once delivery of data to the API. The developer needs a solution thatminimizes unnecessary API calls.Which solution will meet these requirements?

A : Set up the SQS queue as a FIFO queue. Enable content-based deduplication for messages in the queue.

B : Configure reserved concurrency for the function. Set the reserved concurrency value to 1.

C : Enable reporting for batch item failures in the function event source mapping. Configure the function toreport batch item failures.

D : Create a second SQS queue. Configure the original SQS queue to use the second queue as a dead-letterqueue.

Answer: C

Question 5

A developer is receiving HTTP 400: ThrottlingException errors intermittently when calling the AmazonCloudWatch API. When a call fails, no data is retrieved.What best practice should first be applied to address this issue?

A : Contact AWS Support for a limit increase.

B : Use the AWS CLI to get the metrics.

C : Analyze the applications and remove the API call.

D : Retry the call with exponential backoff.

Answer: D

Page: 1 / 110

Total 550 Questions | Updated On: Apr 01, 2026

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