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Amazon AWS Certified Developer - Associate 認定 DVA-C02 試験問題 (Q221-Q226):

質問 # 221
A developer is migrating an application to Amazon Elastic Kubernetes Service (Amazon EKS). The developer migrates the application to Amazon Elastic Container Registry (Amazon ECR) with an EKS cluster.
As part of the application migration to a new backend, the developer creates a new AWS account. The developer makes configuration changes to the application to point the application to the new AWS account and to use new backend resources. The developer successfully tests the changes within the application by deploying the pipeline.
The Docker image build and the pipeline deployment are successful, but the application is still connecting to the old backend. The developer finds that the application's configuration is still referencing the original EKS cluster and not referencing the new backend resources.
Which reason can explain why the application is not connecting to the new resources?

A. The developer did not update the Docker image tag to a new version.
B. The developer pushed the changes to a new Docker image tag.
C. The developer added a new tag to the Docker image.
D. The developer did not successfully create the new AWS account.

正解：A

解説：
The correct answer is C. The developer did not update the Docker image tag to a new version.
C: The developer did not update the Docker image tag to a new version. This is correct. When deploying an application to Amazon EKS, the developer needs to specify the Docker image tag that contains the application code and configuration. If the developer does not update the Docker image tag to a new version after making changes to the application, the EKS cluster will continue to use the old Docker image tag that references the original backend resources. To fix this issue, the developer should update the Docker image tag to a new version and redeploy the application to the EKS cluster.
A: The developer did not successfully create the new AWS account. This is incorrect. The creation of a new AWS account is not related to the application's connection to the backend resources. The developer can use any AWS account to host the EKS cluster and the backend resources, as long as they have the proper permissions and configurations.
B: The developer added a new tag to the Docker image. This is incorrect. Adding a new tag to the Docker image is not enough to deploy the changes to the application. The developer also needs to update the Docker image tag in the EKS cluster configuration, so that the EKS cluster can pull and run the new Docker image.
D: The developer pushed the changes to a new Docker image tag. This is incorrect. Pushing the changes to a new Docker image tag is not enough to deploy the changes to the application. The developer also needs to update the Docker image tag in the EKS cluster configuration, so that the EKS cluster can pull and run the new Docker image.

質問 # 222
A developer hosts a static website on Amazon S3 and connects the website to an Amazon CloudFront distribution. The website uses a custom domain name that points to the CloudFront URL.
The developer has set up a continuous integration and continuous delivery (CI/CD) pipeline. The pipeline automatically runs when changes occur in an AWS CodeCommit repository. The pipeline has a source stage and then a build stage. The build stage invokes an AWS CodeBuild project that references a buildspec.yml file. The buildspec.yml file builds the code and deploys the static files to the S3 bucket.
The pipeline runs successfully, and the latest website files are visible in the S3 bucket and at the S3 website URL. However, when the developer accesses the website through the CloudFront domain, the updates are not reflected on the website.
What should the developer configure the buildspec.yml file to do to resolve this issue?

A. Properly synchronize the objects in the S3 bucket with new files from the source stage.
B. Modify the cross-origin resource sharing (CORS) policy of the S3 bucket and redeploy the website files.
C. Delete the previous website files in the S3 bucket and redeploy the website files.
D. Invalidate the file caches for the primary CloudFront distribution.

正解：D

質問 # 223
A developer is building a serverless application by using AWS Serverless Application Model (AWS SAM) on multiple AWS Lambda functions.
When the application is deployed, the developer wants to shift 10% of the traffic to the new deployment of the application for the first 10 minutes after deployment. If there are no issues, all traffic must switch over to the new version.
Which change to the AWS SAM template will meet these requirements?

A. Set the Deployment Preference Type to LinearlOPercentEveryIOMinutes. Set PreTraffic and Post Traffic properties to the Lambda alias.
B. Set the Deployment Preference Type to CanaryIOPercentIOMinutes. Set the PreTraffic and PostTraffic properties to the Lambda alias.
C. Set the Deployment Preference Type to LinearlOPercentEvery10Minutes. Set AutoPubIishAIias property to the Lambda alias.
D. Set the Deployment Preference Type to Canary10Percent10Minutes. Set the AutoPublishAlias property to the Lambda alias.

正解：D

解説：
Explanation
The AWS Serverless Application Model (AWS SAM) comes built-in with CodeDeploy to provide gradual AWS Lambda deployments1. The DeploymentPreference property in AWS SAM allows you to specify the type of deployment that you want. The Canary10Percent10Minutes option means that 10 percent of your customer traffic is immediately shifted to your new version. After 10 minutes, all traffic is shifted to the new version1. The AutoPublishAlias property in AWS SAM allows AWS SAM to automatically create an alias that points to the updated version of the Lambda function1. Therefore, option A is correct.

質問 # 224
A development team maintains a web application by using a single AWS CloudFormation template. The template defines web servers and an Amazon RDS database. The team uses the Cloud Formation template to deploy the Cloud Formation stack to different environments.
During a recent application deployment, a developer caused the primary development database to be dropped and recreated. The result of this incident was a loss of data. The team needs to avoid accidental database deletion in the future.
Which solutions will meet these requirements? (Choose two.)

A. Add a CloudFormation Deletion Policy attribute with the Retain value to the database resource.
B. Update the CloudFormation stack policy to prevent updates to the database.
C. Create a CloudFormation stack set for the web application and database deployments.
D. Add a Cloud Formation DeletionPolicy attribute with the Retain value to the stack.
E. Modify the database to use a Multi-AZ deployment.

正解：A、B

解説：
AWS CloudFormation is a service that enables developers to model and provision AWS resources using templates. The developer can add a CloudFormation Deletion Policy attribute with the Retain value to the database resource. This will prevent the database from being deleted when the stack is deleted or updated. The developer can also update the CloudFormation stack policy to prevent updates to the database. This will prevent accidental changes to the database configuration or properties.

質問 # 225
A developer is building an application that includes an AWS Lambda function that is written in .NET Core. The Lambda function's code needs to interact with Amazon DynamoDB tables and Amazon S3 buckets. The developer must minimize the Lambda function's deployment time and invocation duration.
Which solution will meet these requirements?

A. Include the entire AWS SDK for .NET in the Lambda function's deployment package.
B. Increase the Lambda function's memory.
C. Include only the AWS SDK for .NET modules for DynamoDB and Amazon S3 in the Lambda function's deployment package.
D. Configure the Lambda function to download the AWS SDK for .NET from an S3 bucket at runtime.

正解：C

質問 # 226
......

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早速ダウンロードDVA-C02対応内容 &正しいAmazon認定トレーニング -素晴らしいAmazon AWS Certified Developer - Associate

Amazon DVA-C02受験対策 & DVA-C02基礎訓練

Amazon AWS Certified Developer - Associate 認定 DVA-C02 試験問題 (Q221-Q226):

Amazon DVA-C02対応内容: AWS Certified Developer - Associate - Japancert 私達を選ぶなら簡単に試験に合格

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