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Amazon DVA-C01 Exam
AWS Certified Developer - Associate DVA-C02 (Page 11 )

Updated On: 26-Jan-2026
Page 11 of 113
PDF with 500 Questions

A developer uses an AWS Lambda function in an application to edit users' uploaded photos. The developer needs to update the Lambda function code and needs to test the updates.
For testing, the developer must divide the user traffic between the original version of the Lambda function and the new version of the Lambda function.
Which combination of steps will meet these requirements? (Choose two.)

  1. Publish a version of the original Lambda function. Make the necessary changes to the Lambda code. Publish a new version of the Lambda function.
  2. Use AWS CodeBuild to detect updates to the Lambda function. Configure CodeBuild to incrementally shift traffic from the original version of the Lambda function to the new version of the Lambda function.
  3. Update the original version of the Lambda function to add a function URL. Make the necessary changes to the Lambda code. Publish another function URL for the updated Lambda code.
  4. Create an alias that points to the original version of the Lambda function. Configure the alias to be a weighted alias that also includes the new version of the Lambda function. Divide traffic between the two versions.
  5. Create an alias that points to the original function URL. Configure the alias to be a weighted alias that also includes the additional function URL. Divide traffic between the two function URLs.

Answer(s): A,D



A company uses AWS X-Ray to monitor a serverless application. The components of the application have different request rates. The user interactions and transactions are important to trace, but they are low in volume. The background processes such as application health checks, polling, and connection maintenance generate high volumes of read-only requests.
Currently, the default X-Ray sampling rules are universal for all requests. Only the first request per second and some additional requests are recorded. This setup is not helping the company review the requests based on service or request type.
A developer must configure rules to trace requests based on service or request properties. The developer must trace the user interactions and transactions without wasting effort recording minor background tasks.
Which solution will meet these requirements?

  1. Disable sampling for high-volume read-only requests. Sample at a lower rate for all requests that handle user interactions or transactions.
  2. Disable sampling and trace all requests for requests that handle user interactions or transactions. Sample high-volume read-only requests at a higher rate.
  3. Disable sampling and trace all requests for requests that handle user interactions or transactions. Sample high-volume read-only requests at a lower rate.
  4. Disable sampling for high-volume read-only requests. Sample at a higher rate for all requests that handle user interactions or transactions.

Answer(s): C



A developer needs to store files in an Amazon S3 bucket for a company's application. Each S3 object can have multiple versions. The objects must be permanently removed 1 year after object creation.
The developer creates an S3 bucket that has versioning enabled.
What should the developer do next to meet the data retention requirements?

  1. Create an S3 Lifecycle rule on the S3 bucket. Configure the rule to expire current versions of objects and permanently delete noncurrent versions 1 year after object creation.
  2. Create an event notification for all object creation events in the S3 bucket. Configure the event notification to invoke an AWS Lambda function. Program the Lambda function to check the object creation date and to delete the object if the object is older than 1 year.
  3. Create an event notification for all object removal events in the S3 bucket. Configure the event notification to invoke an AWS Lambda function. Program the Lambda function to check the object creation date and to delete the object if the object is older than 1 year.
  4. Create an S3 Lifecycle rule on the S3 bucket. Configure the rule to delete expired object delete markers and permanently delete noncurrent versions 1 year after object creation.

Answer(s): A



A company uses AWS CloudFormation templates to manage infrastructure for a public-facing application in its development, pre-production, and production environments. The company needs to scale for increasing customer demand. A developer must upgrade the Amazon RDS DB instance type to a larger instance.
The developer deploys an update to the CloudFormation stack with the instance size change in the pre-production environment. The developer notices that the stack is in an UPDATE_ROLLBACK_FAILED slate in CloudFormation.
Which option is the cause of this issue?

  1. The new instance type specified in the CloudFormation template is invalid
  2. The database was deleted or modified manually outside of the CloudFormation stack
  3. There is a syntax error in the CloudFormation template
  4. The developer has insufficient IAM permissions to provision an instance of the specified type

Answer(s): B



A company has a monolithic desktop-based application that processes images. A developer is converting the application into an AWS Lambda function by using Python. Currently, the desktop application runs every 5 minutes to process the latest image from an Amazon S3 bucket. The desktop application completes the image processing task within 1 minute.
During testing on AWS, the developer notices that the Lambda function runs at the specified 5-minute interval. However, the Lambda function takes more than 2 minutes to complete the image processing task. The developer needs a solution that will improve the Lambda function's performance.
Which solution will meet this requirement?

  1. Update the instance type of the Lambda function to a compute optimized instance with at least eight virtual CPU (vCPU).
  2. Update the configuration of the Lambda function to use the latest Python runtime.
  3. Increase the memory that is allocated to the Lambda function.
  4. Configure a reserved concurrency on the Lambda function.

Answer(s): C



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