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Amazon DVA-C01 Exam
AWS Certified Developer - Associate DVA-C02 (Page 10 )

Updated On: 26-Jan-2026
Page 10 of 113
PDF with 500 Questions

A developer builds a serverless application on AWS by using Amazon API Gateway, AWS Lambda functions, and Amazon Route 53. During testing, the developer notices errors but cannot immediately locate the root cause.
To identify the errors, the developer needs to search all the application's logs.
What should the developer do to meet these requirements with the LEAST operational overhead?

  1. Set up API Gateway health checks to monitor the application's availability. Use the Amazon CloudWatch PutMetricData API operation to publish the logs to CloudWatch. Search and query the logs by using Amazon Athena.
  2. Set up Route 53 health checks to monitor the application's availability. Turn on AWS CloudTrail logs for all the AWS services that the application uses. Send the logs to a specified Amazon S3 bucket. Use Amazon Athena to query the log files directly from Amazon S3.
  3. Configure all the application's AWS services to publish a real-time feed of log events to an Amazon Kinesis Data Firehose delivery stream. Configure the delivery stream to publish all the logs to an Amazon S3 bucket. Use Amazon OpenSearch Service to search and analyze the logs.
  4. Set up Route 53 health checks to monitor the application's availability. Turn on Amazon CloudWatch Logs for the API Gateway stages to log API requests with a JSON log format. Use CloudWatch Logs Insights to search and analyze the logs from the AWS services that the application uses.

Answer(s): D



A developer has an application that uses WebSocket APIs in Amazon API Gateway. The developer wants to use an API Gateway Lambda authorizer to control access to the application.
The developer needs to add credential caching and reduce repeated usage of secret keys and authorization tokens on every request.
Which combination of steps should the developer take to meet these requirements? (Choose two.)

  1. Use a token-based Lambda authorizer.
  2. Use a request parameter-based Lambda authorizer.
  3. Configure an integration request mapping template to reference the context map from the APIGateway Lambda authorizer.
  4. Configure an integration request mapping template to reference the identity API key value from the API Gateway Lambda authorizer.
  5. Use VPC endpoint policies for the WebSocket APIs.

Answer(s): A,C



A developer is creating an application that must transfer expired items from Amazon DynamoDB to Amazon S3. The developer sets up the DynamoDB table to automatically delete items after a specific TTL. The application must process the items in DynamoDB and then must store the expired items in Amazon S3. The entire process, including item processing and storage in Amazon S3, will take 5 minutes.
Which solution will meet these requirements with the LEAST operational overhead?

  1. Configure DynamoDB Accelerator (DAX) to query for expired items based on the TTL. Save the results to Amazon S3.
  2. Configure DynamoDB Streams to invoke an AWS Lambda function. Program the Lambda function to process the items and to store the expired items in Amazon S3.
  3. Deploy a custom application on an Amazon Elastic Container Service (Amazon ECS) cluster on Amazon EC2 instances. Program the custom application to process the items and to store the expired items in Amazon S3.
  4. Create an Amazon EventBridge rule to invoke an AWS Lambda function. Program the Lambda function to process the items and to store the expired items in Amazon S3.

Answer(s): B



A company has an ecommerce web application that uses an on-premises MySQL database as a data store. The company migrates the on-premises MySQL database to Amazon RDS for MySQL.
A developer needs to configure the application's access to the RDS for MySQL database. The developer's solution must not use long term credentials.
Which solution will meet these requirements?

  1. Enable IAM database authentication on the RDS for MySQL DB instance. Create an IAM role that has the minimum required permissions. Assign the role to the application.
  2. Store the MySQL credentials as secrets in AWS Secrets Manager. Create an IAM role that has the minimum required permissions to retrieve the secrets. Assign the role to the application.
  3. Configure the MySQL credentials as environment variables that are available at runtime for the application.
  4. Store the MySQL credentials as SecureString parameters in AWS Systems Manager Parameter Store. Create an IAM role that has the minimum required permissions to retrieve the parameters. Assign the role to the application.

Answer(s): A



A company had an Amazon RDS for MySQL DB instance that was named mysql-db. The DB instance was deleted within the past 90 days.
A developer needs to find which IAM user or role deleted the DB instance in the AWS environment.
Which solution will provide this information?

  1. Retrieve the AWS CloudTrail events for the resource mysql-db where the event name is DeleteDBInstance. Inspect each event.
  2. Retrieve the Amazon CloudWatch log events from the most recent log stream within the rds/mysql-db log group. Inspect the log events.
  3. Retrieve the AWS X-Ray trace summaries. Filter by services with the name mysql-db. Inspect the ErrorRootCauses values within each summary.
  4. Retrieve the AWS Systems Manager deletions inventory. Filter the inventory by deletions that have a TypeName value of RDS. Inspect the deletion details.

Answer(s): A



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