DVA-C02 Exam Dumps - AWS Certified Developer - Associate

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Question # 9

A company is migrating its PostgreSQL database into the AWS Cloud. The company wants to use a database that will secure and regularly rotate database credentials. The company wants a solution that does not require additional programming overhead.

Which solution will meet these requirements?

Use Amazon Aurora PostgreSQL tor the database. Store the database credentials in AWS Systems Manager Parameter Store Turn on rotation.

Use Amazon Aurora PostgreSQL for the database. Store the database credentials in AWS Secrets Manager Turn on rotation.

Use Amazon DynamoDB for the database. Store the database credentials in AWS Systems Manager Parameter Store Turn on rotation.

Use Amazon DynamoDB for the database. Store the database credentials in AWS Secrets Manager Turn on rotation.

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Question # 10

A developer has observed an increase in bugs in the AWS Lambda functions that a development team has deployed in its Node.js application.

To minimize these bugs, the developer wants to implement 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 (CI/CD) pipeline before the AWS Cloud Development Kit (AWS CDK) deployment.

Which solution will meet these requirements?

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.

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 CI/CD pipeline to run the unit testing framework.

Install the AWS Serverless Application Model (AWS SAM) CLI tool. Use the sam local generate-event command to generate sample events for the 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 for the other developers on the team. Update the CI/CD pipeline to run the test scripts.

Create sample events based on the Lambda documentation. Create a Docker container from the Node.js base image to invoke the Lambda functions. Check the response. Document how to run the Docker container for the other developers on the team. Update the CllCD pipeline to run the Docker container.

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Question # 11

A developer is deploying an AWS Lambda function The developer wants the ability to return to older versions of the function quickly and seamlessly.

How can the developer achieve this goal with the LEAST operational overhead?

Use AWS OpsWorks to perform blue/green deployments.

Use a function alias with different versions.

Maintain deployment packages for older versions in Amazon S3.

Use AWS CodePipeline for deployments and rollbacks.

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Question # 12

A company wants to deploy and maintain static websites on AWS. Each website's source code is hosted in one of several version control systems, including AWS CodeCommit, Bitbucket, and GitHub.

The company wants to implement phased releases by using development, staging, user acceptance testing, and production environments in the AWS Cloud. Deployments to each environment must be started by code merges on the relevant Git branch. The company wants to use HTTPS for all data exchange. The company needs a solution that does not require servers to run continuously.

Which solution will meet these requirements with the LEAST operational overhead?

Host each website by using AWS Amplify with a serverless backend. Conned the repository branches that correspond to each of the desired environments. Start deployments by merging code changes to a desired branch.

Host each website in AWS Elastic Beanstalk with multiple environments. Use the EB CLI to link each repository branch. Integrate AWS CodePipeline to automate deployments from version control code merges.

Host each website in different Amazon S3 buckets for each environment. Configure AWS CodePipeline to pull source code from version control. Add an AWS CodeBuild stage to copy source code to Amazon S3.

Host each website on its own Amazon EC2 instance. Write a custom deployment script to bundle each website's static assets. Copy the assets to Amazon EC2. Set up a workflow to run the script when code is merged.

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Question # 13

A developer manages a website that distributes its content by using Amazon CloudFront. The website's static artifacts are stored in an Amazon S3 bucket.

The developer deploys some changes and can see the new artifacts in the S3 bucket. However, the changes do not appear on the webpage that the CloudFront distribution delivers.

How should the developer resolve this issue?

Configure S3 Object Lock to update to the latest version of the files every time an S3 object is updated.

Configure the S3 bucket to clear all old objects from the bucket before new artifacts are uploaded.

Set CloudFront to invalidate the cache after the artifacts have been deployed to Amazon S3.

Set CloudFront to modify the distribution origin after the artifacts have been deployed to Amazon S3.

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Question # 14

A developer designed an application on an Amazon EC2 instance The application makes API requests to objects in an Amazon S3 bucket

Which combination of steps will ensure that the application makes the API requests in the MOST secure manner? (Select TWO.)

Create an IAM user that has permissions to the S3 bucket. Add the user to an 1AM group

Create an IAM role that has permissions to the S3 bucket

Add the IAM role to an instance profile. Attach the instance profile to the EC2 instance.

Create an 1AM role that has permissions to the S3 bucket Assign the role to an 1AM group

Store the credentials of the IAM user in the environment variables on the EC2 instance

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Question # 15

A company is planning to deploy an application on AWS behind an Elastic Load Balancing (ELB) load balancer. The application uses an HTTP/HTTPS listener and must access the client IP addresses.

Which load-balancing solution meets these requirements?

Use an Application Load Balancer and the X-Forwarded-For headers.

Use a Network Load Balancer (NLB). Enable proxy protocol support on the NLB and the target application.

Use an Application Load Balancer. Register the targets by the instance ID.

Use a Network Load Balancer and the X-Forwarded-For headers.

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Question # 16

A developer is creating an AWS Lambda function that will connect to an Amazon RDS for MySQL instance. The developer wants to store the database credentials. The database credentials need to be encrypted and the database password needs to be automatically rotated.

Which solution will meet these requirements?

Store the database credentials as environment variables for the Lambda function. Set the environment variables to rotate automatically.

Store the database credentials in AWS Secrets Manager. Set up managed rotation on the database credentials.

Store the database credentials in AWS Systems Manager Parameter Store as secure string parameters. Set up managed rotation on the parameters.

Store the database credentials in the X-Amz-Security-Token parameter. Set up managed rotation on the parameter.

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