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Amazon DVA-C01 Exam
AWS Certified Developer - Associate DVA-C02 (Page 19 )

Updated On: 26-Jan-2026
Page 19 of 113
PDF with 500 Questions

A developer created an AWS Lambda function that performs a series of operations that involve multiple AWS services. The function's duration time is higher than normal. To determine the cause of the issue, the developer must investigate traffic between the services without changing the function code.
Which solution will meet these requirements?

  1. Enable AWS X-Ray active tracing in the Lambda function. Review the logs in X-Ray.
  2. Configure AWS CloudTrail. View the trail logs that are associated with the Lambda function.
  3. Review the AWS Config logs in Amazon CloudWatch.
  4. Review the Amazon CloudWatch logs that are associated with the Lambda function.

Answer(s): A



A company has a social media application that receives large amounts of traffic. User posts and interactions are continuously updated in an Amazon RDS database. The data changes frequently, and the data types can be complex. The application must serve read requests with minimal latency.
The application's current architecture struggles to deliver these rapid data updates efficiently. The company needs a solution to improve the application's performance.
Which solution will meet these requirements?

  1. Use Amazon DynamoDB Accelerator (DAX) in front of the RDS database to provide a caching layer for the high volume of rapidly changing data.
  2. Set up Amazon S3 Transfer Acceleration on the RDS database to enhance the speed of data transfer from the databases to the application.
  3. Add an Amazon CloudFront distribution in front of the RDS database to provide a caching layer for the high volume of rapidly changing data.
  4. Create an Amazon ElastiCache for Redis cluster. Update the application code to use a write-through caching strategy and read the data from Redis.

Answer(s): D



A developer creates a static website for their department. The developer deploys the static assets for the website to an Amazon S3 bucket and serves the assets with Amazon CloudFront. The developer uses origin access control (OAC) on the CloudFront distribution to access the S3 bucket.
The developer notices users can access the root URL and specific pages but cannot access directories without specifying a file name. For example, /products/index.html works, but /products/ returns an error. The developer needs to enable accessing directories without specifying a file name without exposing the S3 bucket publicly.
Which solution will meet these requirements?

  1. Update the CloudFront distribution's settings to index.html as the default root object is set.
  2. Update the Amazon S3 bucket settings and enable static website hosting. Specify index.html as the Index document. Update the S3 bucket policy to enable access. Update the CloudFront distribution's origin to use the S3 website endpoint.
  3. Create a CloudFront function that examines the request URL and appends index.html when directories are being accessed. Add the function as a viewer request CloudFront function to the CloudFront distribution's behavior.
  4. Create a custom error response on the CloudFront distribution with the HTTP error code set to the HTTP 404 Not Found response code and the response page path to /index.html. Set the HTTP response code to the HTTP 200 OK response code.

Answer(s): C



A developer is testing a RESTful application that is deployed by using Amazon API Gateway and AWS Lambda. When the developer tests the user login by using credentials that are not valid, the developer receives an HTTP 405: METHOD_NOT_ALLOWED error. The developer has verified that the test is sending the correct request for the resource.
Which HTTP error should the application return in response to the request?

  1. HTTP 401
  2. HTTP 404
  3. HTTP 503
  4. HTTP 505

Answer(s): A



A developer must use multi-factor authentication (MFA) to access data in an Amazon S3 bucket that is in another AWS account.
Which AWS Security Token Service (AWS STS) API operation should the developer use with the MFA information to meet this requirement?

  1. AssumeRoleWithWebIdentity
  2. GetFederationToken
  3. AssumeRoleWithSAML
  4. AssumeRole

Answer(s): D



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