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Amazon DVA-C01 Exam
AWS Certified Developer - Associate DVA-C02 (Page 3 )

Updated On: 26-Jan-2026
Page 3 of 113
PDF with 500 Questions

A company used AWS to develop an application for customers. The application includes an Amazon API Gateway API that invokes AWS Lambda functions. The Lambda functions process data and store the data in Amazon DynamoDB tables.
The company must monitor the entire application to identify potential bottlenecks in the architecture that can negatively affect customers.
Which solution will meet this requirement with the LEAST development effort?

  1. Instrument the application with AWS X-Ray. Inspect the service map to identify errors and issues.
  2. Configure Lambda exceptions and additional logging to Amazon CloudWatch. Use CloudWatch Logs Insights to query the logs.
  3. Configure API Gateway to log responses to Amazon CloudWatch. Create a metric filter for the TooManyRequestsException error message.
  4. Use Amazon CloudWatch metrics for the DynamoDB tables to identify all the ProvisionedThroughputExceededException error messages.

Answer(s): A



A company is developing an application that will be accessed through the Amazon API Gateway REST API. Registered users should be the only ones who can access certain resources of this API. The token being used should expire automatically and needs to be refreshed periodically.
How can a developer meet these requirements?

  1. Create an Amazon Cognito identity pool, configure the Amazon Cognito Authorizer in API Gateway, and use the temporary credentials generated by the identity pool.
  2. Create and maintain a database record for each user with a corresponding token and use an AWS Lambda authorizer in API Gateway.
  3. Create an Amazon Cognito user pool, configure the Cognito Authorizer in API Gateway, and use the identity or access token.
  4. Create an IAM user for each API user, attach an invoke permissions policy to the API, and use an IAM authorizer in API Gateway.

Answer(s): C



A developer creates an AWS Lambda function that is written in Java. During testing, the Lambda function does not work how the developer expected. The developer wants to use tracing capabilities to troubleshoot the problem.
Which AWS service should the developer use to accomplish this goal?

  1. AWS Trusted Advisor
  2. Amazon CloudWatch
  3. AWS X-Ray
  4. AWS CloudTrail

Answer(s): C



A company has a serverless application that uses Amazon API Gateway backed by AWS Lambda proxy integration. The company is developing several backend APIs. The company needs a landing page to provide an overview of navigation to the APIs.
A developer creates a new/LandingPage resource and a new GET method that uses mock integration.
What should the developer do next to meet these requirements?

  1. Configure the integration request mapping template with Content-Type of text/html and statusCode of 200. Configure the integration response mapping template with Content-Type of application/json. In the integration response mapping template, include the LandingPage HTML code that references the APIs.
  2. Configure the integration request mapping template with Content-Type of application/json. In the integration request mapping template, include the LandingPage HMTL code that references the APIs. Configure the integration response mapping template with Content-Type of text/html and statusCode of 200.
  3. Configure the integration request mapping template with Content-Type of application/json and statusCode of 200. Configure the integration response mapping template with Content-Type of text/html. In the integration response mapping template, include the LandingPage HTML code that references the APIs.
  4. Configure the integration request mapping template with Content-Type of text/html. In the integration request mapping template, include the LandingPage HTML code that references the APIs. Configure the integration response mapping template with Content-Type of application/json and statusCode of 200.

Answer(s): C



A company runs an ecommerce application on AWS. The application stores data in an Amazon Aurora database.
A developer is adding a caching layer to the application. The caching strategy must ensure that the application always uses the most recent value for each data item.
Which caching strategy will meet these requirements?

  1. Implement a TTL strategy for every item that is saved in the cache.
  2. Implement a write-through strategy for every item that is created and updated.
  3. Implement a lazy loading strategy for every item that is loaded.
  4. Implement a read-through strategy for every item that is loaded.

Answer(s): B



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