PASS GUARANTEED QUIZ 2025 THE BEST DVA-C02: NEW AWS CERTIFIED DEVELOPER - ASSOCIATE EXAM PAPERS

Pass Guaranteed Quiz 2025 The Best DVA-C02: New AWS Certified Developer - Associate Exam Papers

Pass Guaranteed Quiz 2025 The Best DVA-C02: New AWS Certified Developer - Associate Exam Papers

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Achieving the Amazon DVA-C02 Certification demonstrates a developer's ability to design, develop, and deploy cloud-based applications on the AWS platform. It can help developers enhance their career opportunities and increase their earning potential. Additionally, it enables organizations to identify and hire developers who possess the skills and knowledge needed to design and deploy high-quality applications on the AWS platform.

Amazon AWS Certified Developer - Associate Sample Questions (Q277-Q282):

NEW QUESTION # 277
In a move toward using microservices, a company's management team has asked all development teams to build their services so that API requests depend only on that service's data store. One team is building a Payments service which has its own database; the service needs data that originates in the Accounts database. Both are using Amazon DynamoDB.
What approach will result in the simplest, decoupled, and reliable method to get near-real time updates from the Accounts database?

  • A. Use Amazon DynamoDB Streams to deliver all changes from the Accounts database to the Payments database.
  • B. Use Amazon ElastiCache in Payments, with the cache updated by triggers in the Accounts database.
  • C. Use AWS Glue to perform frequent ETL updates from the Accounts database to the Payments database.
  • D. Use Amazon Data Firehose to deliver all changes from the Accounts database to the Payments database.

Answer: A


NEW QUESTION # 278
A company runs a web application on Amazon EC2 instances behind an Application Load Balancer. The application uses Amazon DynamoDB as its database. The company wants to ensure high performance for reads and writes.
Which solution will meet these requirements MOST cost-effectively?

  • A. Use DynamoDB provisioned throughput mode for the table. Create an Amazon CloudWatch alarm on the ThrottledRequests metric. Invoke an AWS Lambda function to increase provisioned capacity.
  • B. Configure auto-scaling for the DynamoDB table with a target utilization of 70%. Set the minimum and maximum capacity units based on the expected workload.
  • C. Use DynamoDB on-demand capacity mode for the table. Specify a maximum throughput higher than the expected peak read and write capacity units.
  • D. Create an Amazon DynamoDB Accelerator (DAX) cluster. Configure the application to use the DAX endpoint.

Answer: B

Explanation:
Comprehensive Detailed Explanation with all AWS Reference
Why Option A is Correct:
Auto-scaling with a target utilization ensures the DynamoDB table dynamically adjusts capacity based on workload, maintaining high performance while optimizing cost. Setting a reasonable target utilization minimizes overprovisioning and throttling risks.
Why Other Options are Incorrect:
Option B: On-demand capacity is costlier than provisioned throughput for predictable workloads.
Option C: Using manual CloudWatch alarms and Lambda for scaling is less efficient and adds operational overhead.
Option D: DAX accelerates read performance but does not improve write performance.
AWS Documentation Reference:
DynamoDB Auto Scaling


NEW QUESTION # 279
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 documentation. Create a Docker container from the Node is base image to invoke the Lambda functions. Check the response Document how to run the Docker container for the more developers on the team update the CI/CD pipeline to run the Docker container.
  • B. Install the AWS Serverless Application Model (AWS SAW) CLI tool Use the Sam local generate-event command to generate sample events for me automated tests. Create automated test scripts that use the Sam local invoke command to invoke the Lambda functions. Check the response Document the test scripts tor the other developers on the team Update the CI/CD pipeline to run the test scripts.
  • C. Install a unit testing framework that reproduces the Lambda execution environment. Create sample events based on the Lambda Documentation Invoke the handler function by using a unit testing framework. Check the response Document how to run the unit testing framework for the other developers on the team. Update the OCD pipeline to run the unit testing framework.
  • D. Create sample events based on the Lambda documentation. Create automated test scripts that use the cdk local invoke command to invoke the Lambda functions. Check the response Document the test scripts for the other developers on the team Update the CI/CD pipeline to run the test scripts.

Answer: B

Explanation:
Explanation
This solution will meet the requirements by using AWS SAM CLI tool, which is a command line tool that lets developers locally build, test, debug, and deploy serverless applications defined by AWS SAM templates. The developer can use sam local generate-event command to generate sample events for different event sources such as API Gateway or S3. The developer can create automated test scripts that use sam local invoke command to invoke Lambda functions locally in an environment that closely simulates Lambda environment.
The developer can check the response from Lambda functions and document how to run the test scripts for other developers on the team. The developer can also update CI/CD pipeline to run these test scripts before deploying with AWS CDK. Option A is not optimal because it will use cdk local invoke command, which does not exist in AWS CDK CLI tool. Option B is not optimal because it will use a unit testing framework that reproduces Lambda execution environment, which may not be accurate or consistent with Lambda environment. Option D is not optimal because it will create a Docker container from Node.js base image to invoke Lambda functions, which may introduce additional overhead and complexity for creating and running Docker containers.
References: [AWS Serverless Application Model (AWS SAM)], [AWS Cloud Development Kit (AWS CDK)]


NEW QUESTION # 280
A development team wants to build a continuous integration/continuous delivery (CI/CD) pipeline. The team is using AWS CodePipeline to automate the code build and deployment. The team wants to store the program code to prepare for the CI/CD pipeline.
Which AWS service should the team use to store the program code?

  • A. AWS CodeArtifact
  • B. AWS CodeCommit
  • C. Amazon CodeGuru
  • D. AWS CodeDeploy

Answer: B

Explanation:
Explanation
AWS CodeCommit is a service that provides fully managed source control for hosting secure and scalable private Git repositories. The development team can use CodeCommit to store the program code and prepare for the CI/CD pipeline. CodeCommit integrates with other AWS services such as CodePipeline, CodeBuild, and CodeDeploy to automate the code build and deployment process.
References:
[What Is AWS CodeCommit? - AWS CodeCommit]
[AWS CodePipeline - AWS CodeCommit]


NEW QUESTION # 281
A company uses a custom root certificate authority certificate chain (Root CA Cert) that is 10 KB in size to generate SSL certificates for its on-premises HTTPS endpoints. One of the company's cloud-based applications has hundreds of AWS Lambda functions that pull data from these endpoints. A developer updated the trust store of the Lambda execution environment to use the Root CA Cert when the Lambda execution environment is initialized. The developer bundled the Root CA Cert as a text file in the Lambda deployment bundle.
After 3 months of development, the Root CA Cert is no longer valid and must be updated. The developer needs a more efficient solution to update the Root CA Cert for all deployed Lambda functions. The solution must not include rebuilding or updating all Lambda functions that use the Root CA Cert. The solution must also work for all development, testing, and production environments. Each environment is managed in a separate AWS account.
Which combination of steps should the developer take to meet these requirements MOST cost- effectively? (Choose two.)

  • A. Refactor the Lambda code to load the Root CA Cert from the Root CA Cert's location. Modify the runtime trust store inside the Lambda function handler.
  • B. Store the Root CA Cert in an Amazon S3 bucket. Create a resource-based policy to allow access to the bucket.
  • C. Store the Root CA Cert as a SecureString parameter in AWS Systems Manager Parameter Store.
    Create a resource-based policy. Add IAM users to allow access to the policy.
  • D. Store the Root CA Cert as a secret in AWS Secrets Manager. Create a resource-based policy.
    Add IAM users to allow access to the secret.
  • E. Refactor the Lambda code to load the Root CA Cert from the Root CA Cert's location. Modify the runtime trust store outside the Lambda function handler.

Answer: D,E

Explanation:
The max size of storage in Secrets Manager is 10kb. For SSM Parameter store, it's 8Kb.


NEW QUESTION # 282
......

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