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AWS Certified Developer - Associate (DVA-C02): DVA-C02

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AWS Certified Developer - Associate (DVA-C02): DVA-C02

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  • Vendor: Amazon
  • Exam Code: DVA-C02
  • Exam Name: AWS Certified Developer - Associate (DVA-C02)
  • Certifications: Amazon Certifications
  • Total Questions: 574 Q&As( View Details)
  • Updated on: May 31, 2026
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Free DVA-C02 Exam Questions in PDF Format

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DVA-C02 Online Practice Questions and Answers

Questions 1

An application is using Amazon Cognito user pools and identity pools for secure access. A developer wants to integrate the user-specific file upload and download features in the application with Amazon S3. The developer must ensure that the files are saved and retrieved in a secure manner and that users can access only their own files. The file sizes range from 3 KB to 300 MB.

Which option will meet these requirements with the HIGHEST level of security?

A. Use S3 Event Notifications to validate the file upload and download requests and update the user interface (UI).

B. Save the details of the uploaded files in a separate Amazon DynamoDB table. Filter the list of files in the user interface (UI) by comparing the current user ID with the user ID associated with the file in the table.

C. Use Amazon API Gateway and an AWS Lambda function to upload and download files. Validate each request in the Lambda function before performing the requested operation.

D. Use an IAM policy within the Amazon Cognito identity prefix to restrict users to use their own folders in Amazon S3.

Show Answer

Questions 2

A developer is implementing an AWS Cloud Development Kit (AWS CDK) serverless application. The developer will provision several AWS Lambda functions and Amazon API Gateway APIs during AWS CloudFormation stack creation. The developer's workstation has the AWS Serverless Application Model (AWS SAM) and the AWS CDK installed locally.

How can the developer test a specific Lambda function locally?

A. Run the sam package and sam deploy commands. Create a Lambda test event from the AWS Management Console. Test the Lambda function.

B. Run the cdk synth and cdk deploy commands. Create a Lambda test event from the AWS Management Console. Test the Lambda function.

C. Run the cdk synth and sam local invoke commands with the function construct identifier and the path to the synthesized CloudFormation template.

D. Run the cdk synth and sam local start-lambda commands with the function construct identifier and the path to the synthesized CloudFormation template.

Show Answer

Questions 3

A company has a three-tier application that is deployed in Amazon Elastic Container Service (Amazon ECS). The application is using an Amazon RDS for MySQL DB instance. The application performs more database reads than writes.

During times of peak usage, the application's performance degrades. When this performance degradation occurs, the DB instance's ReadLatency metric in Amazon CloudWatch increases suddenly.

How should a developer modify the application to improve performance?

A. Use Amazon ElastiCache to cache query results.

B. Scale the ECS cluster to contain more ECS instances.

C. Add read capacity units (RCUs) to the DB instance.

D. Modify the ECS task definition to increase the task memory.

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