Free AWS Certified Developer - Associate DVA-C02 Exam Questions and Answers

Last updated: September 7, 2026

Exam code

DVA-C02

Provider

Amazon

Questions in our bank

1000+

Free to read

First 10, with answers

Official page

Official Exam website

Our test mode duration & pass mark

130 mins · 70%

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1. Question #1

   A data visualization company wants to strengthen the security of its core applications The applications are deployed on AWS across its development staging, pre- production, and production environments. The company needs to encrypt all of its stored sensitive credentials The sensitive credentials need to be automatically rotated Aversion of the sensitive credentials need to be stored for each environment Which solution will meet these requirements in the MOST operationally efficient way?

   • A. Configure AWS Secrets Manager versions to store different copies of the same credentials across multiple environments
   • B. Create a new parameter version in AWS Systems Manager Parameter Store for each environment Store the environment-specific credentials in the parameter
   • C. Configure the environment variables in the application code Use different names for each environment type
   • D. Configure AWS Secrets Manager to create a new secret for each environment type.
   Reveal Answer

2. Question #2

   A developer is creating a mobile app that calls a backend service by using an Amazon API Gateway REST API. For integration testing during the development phase, the developer wants to simulate different backend responses without invoking the backend service. Which solution will meet these requirements with the LEAST operational overhead?

   • A. Create an AWS Lambda functio
   • B. Use API Gateway proxy integration to return constant HTTP responses.
   • C. Create an Amazon EC2 instance that serves the backend REST API by using an AWS CloudFormation template.
   • D. Customize the API Gateway stage to select a response type based on the request.
   Reveal Answer

3. Question #3

   A developer is deploying a new application to Amazon Elastic Container Service (Amazon ECS). The developer needs to securely store and retrieve different types of variables. These variables include authentication information for a remote API, the URL for the API, and credentials. The authentication information and API URL must be available to all current and future deployed versions of the application across development, testing, and production environments. How should the developer retrieve the variables with the FEWEST application changes?

   • A. Update the application to retrieve the variables from AWS Systems Manager Parameter Stor
   • B. Use unique paths in Parameter Store for each variable in each environmen
   • C. Store the credentials in AWS Secrets Manager in each environment.
   • D. Update the application to retrieve the variables from AWS Key Management Service (AWS KMS). Store the API URL and credentials as unique keys for each
   Reveal Answer

4. Question #4

   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?

   • A. HTTP 401
   • B. HTTP 404
   • C. HTTP 503
   • D. HTTP 505
   Reveal Answer

5. Question #5

   A developer at a company recently created a serverless application to process and show data from business reports. The application's user interface (UI) allows users to select and start processing the files. The Ul displays a message when the result is available to view. The application uses AWS Step Functions with AWS Lambda functions to process the files. The developer used Amazon API Gateway and Lambda functions to create an API to support the UI. The company's Ul team reports that the request to process a file is often returning timeout errors because of the see or complexity of the files. The Ul team wants the API to provide an immediate response so that the Ul can deploy a message while the files are being processed. The backend process that is invoked by the API needs to send an email message when the report processing is complete. What should the developer do to configure the API to meet these requirements?

   • A. Change the API Gateway route to add an X-Amz-Invocation-Type header win a sialic value of 'Event' in the integration request Deploy the API Gateway stage to
   • B. Change the configuration of the Lambda function that implements the request to process a fil
   • C. Configure the maximum age of the event so that the Lambda function will ion asynchronously.
   • D. Change the API Gateway timeout value to match the Lambda function ominous valu
   Reveal Answer

6. Question #6

   A developer needs to migrate an online retail application to AWS to handle an anticipated increase in traffic. The application currently runs on two servers: one server for the web application and another server for the database. The web server renders webpages and manages session state in memory. The database server hosts a MySQL database that contains order details. When traffic to the application is heavy, the memory usage for the web server approaches 100% and the application slows down considerably. The developer has found that most of the memory increase and performance decrease is related to the load of managing additional user sessions. For the web server migration, the developer will use Amazon EC2 instances with an Auto Scaling group behind an Application Load Balancer. Which additional set of changes should the developer make to the application to improve the application's performance?

   • A. Use an EC2 instance to host the MySQL databas
   • B. Store the session data and the application data in the MySQL database.
   • C. Use Amazon ElastiCache for Memcached to store and manage the session dat
   • D. Use an Amazon RDS for MySQL DB instance to store the application data.
   Reveal Answer

7. Question #7

   A developer has been asked to create an AWS Lambda function that is invoked any time updates are made to items in an Amazon DynamoDB table. The function has been created and appropriate permissions have been added to the Lambda execution role Amazon DynamoDB streams have been enabled for the table, but the function 15 still not being invoked. Which option would enable DynamoDB table updates to invoke the Lambda function?

   • A. Change the StreamViewType parameter value to NEW_AND_OLOJMAGES for the DynamoDB table.
   • B. Configure event source mapping for the Lambda function.
   • C. Map an Amazon Simple Notification Service (Amazon SNS) topic to the DynamoDB streams.
   • D. Increase the maximum runtime (timeout) setting of the Lambda function.
   Reveal Answer

8. Question #8

   A developer has observed an increase in bugs in the AWS Lambda functions that a development team has deployed in its Node is application. To minimize these bugs, the developer wants to impendent automated testing of Lambda functions in an environment that Closely simulates the Lambda environment. The developer needs to give other developers the ability to run the tests locally. The developer also needs to integrate the tests into the team's continuous integration and continuous delivery (Ct/CO) pipeline before the AWS Cloud Development Kit (AWS COK) deployment. Which solution will meet these requirements?

   • A. Create sample events based on the Lambda documentatio
   • B. Create automated test scripts that use the cdk local invoke command to invoke the Lambda function
   • C. Check the response Document the test scripts for the other developers on the team Update the CI/CD pipeline to run the test scripts.
   • D. Install a unit testing framework that reproduces the Lambda execution environmen
   Reveal Answer

9. Question #9

   A developer is creating a simple proof-of-concept demo by using AWS CloudFormation and AWS Lambda functions The demo will use a CloudFormation template to deploy an existing Lambda function The Lambda function uses deployment packages and dependencies stored in Amazon S3 The developer defined anAWS Lambda Function resource in a CloudFormation template. The developer needs to add the S3 bucket to the CloudFormation template. What should the developer do to meet these requirements with the LEAST development effort?

   • A. Add the function code in the CloudFormation template inline as the code property
   • B. Add the function code in the CloudFormation template as the ZipFile property.
   • C. Find the S3 key for the Lambda function Add the S3 key as the ZipFile property in the CloudFormation template.
   • D. Add the relevant key and bucket to the S3Bucket and S3Key properties in the CloudFormation template
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10. Question #10

    A company needs to harden its container images before the images are in a running state. The company's application uses Amazon Elastic Container Registry (Amazon ECR) as an image registry. Amazon Elastic Kubernetes Service (Amazon EKS) for compute, and an AWS CodePipeline pipeline that orchestrates a continuous integration and continuous delivery (CI/CD) workflow. Dynamic application security testing occurs in the final stage of the pipeline after a new image is deployed to a development namespace in the EKS cluster. A developer needs to place an analysis stage before this deployment to analyze the container image earlier in the CI/CD pipeline. Which solution will meet these requirements with the MOST operational efficiency?

    • A. Build the container image and run the docker scan command locall
    • B. Mitigate any findings before pushing changes to the source code repositor
    • C. Write a pre-commit hook that enforces the use of this workflow before commit.
    • D. Create a new CodePipeline stage that occurs after the container image is buil
    Reveal Answer