A developer needs to use a code template to create an automated deployment of an application onto Amazon EC2 instances. The template must be configured to repeat deployment, installation, and updates of resources for the application. The template must be able to create identical environments and roll back to previous versions.
Which solution will meet these requirements?

• A.Use AWS Amplify for automatic deployment templates. Use a traffic-splitting deployment to copy any deployments. Modify any resources created by Amplify, if necessary.
• B.Use AWS CodeBuild for automatic deployment. Upload the required AppSpec file template. Save the appspec.yml file in the root directory folder of the revision. Specify the deployment group that includes the EC2 instances for the deployment.
• C.Use AWS CloudFormation to create an infrastructure template in JSON format to deploy the EC2 instances. Use Cloud Formation helper scripts to install the necessary software and to start the application. Call the scripts directly from the template.
• D.Use AWS AppSync to deploy the application. Upload the template as a GraphQL schema. Specify the EC2 instances for deployment of the application. Use resolvers as a version control mechanism and to make any updates to the deployments.

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A company wants to automate part of its deployment process. A developer needs to automate the process of checking for and deleting unused resources that supported previously deployed stacks but that are no longer used.
The company has a central application that uses the AWS Cloud Development Kit (AWS CDK) to manage all deployment stacks. The stacks are spread out across multiple accounts. The developer's solution must integrate as seamlessly as possible within the current deployment process.
Which solution will meet these requirements with the LEAST amount of configuration?

• A.In the central AWS CDK application, write a handler function in the code that uses AWS SDK calls to check for and delete unused resources. Create an AWS CloudPormation template from a JSON file. Use the template to attach the function code to an AWS Lambda function and lo invoke the Lambda function when the deployment slack runs.
• B.In the central AWS CDK application. write a handler function in the code that uses AWS SDK calls to check for and delete unused resources. Create an AWS CDK custom resource Use the custom resource to attach the function code to an AWS Lambda function and to invoke the Lambda function when the deployment stack runs.
• C.In the central AWS CDK, write a handler function m the code that uses AWS SDK calls to check for and delete unused resources. Create an API in AWS Amplify Use the API to attach the function code to an AWS Lambda function and to invoke the Lambda function when the deployment stack runs.
• D.In the AWS Lambda console write a handler function in the code that uses AWS SDK calls to check for and delete unused resources. Create an AWS CDK custom resource. Use the custom resource to import the Lambda function into the stack and to Invoke the Lambda function when the deployment stack runs.

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A company has implemented a pipeline in AWS CodePipeline. The company Is using a single AWS account and does not use AWS Organizations. The company needs to test its AWS CloudFormation templates in its primary AWS Region and a disaster recovery Region.
Which solution will meet these requirements with the MOST operational efficiency?

• A.Use the Snyk action in CodePipeline to deploy and test the CloudFormation templates in each Region.
• B.Configure CodePipeline to invoke AWS CodeBuild to deploy and test the CloudFormation templates in each Region. Update CodeBuild and CloudFormation with appropriate permissions.
• C.In the CodePipeline pipeline, implement an AWS CodeDeploy action for each Region to deploy and test the Cloud Formation templates. Update CodePipeline and AWS CodeBuild with appropriate permissions.
• D.Configure CodePipeline to deploy and test the Cloud Formation templates. Use CloudFormation StackSets to start deployment across both Regions.

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A developer is investigating an issue in part of a company's application. In the application messages are sent to an Amazon Simple Queue Service (Amazon SQS) queue The AWS Lambda function polls messages from the SQS queue and sends email messages by using Amazon Simple Email Service (Amazon SES) Users have been receiving duplicate email messages during periods of high traffic.
Which reasons could explain the duplicate email messages? (Select TWO.)

• A.Standard SQS queues support at-least-once message delivery
• B.Standard SQS queues support exactly-once processing, so the duplicate email messages are because of user error.
• C.Amazon SES has the DomainKeys Identified Mail (DKIM) authentication incorrectly configured
• D.The SQS queue's visibility timeout is lower than or the same as the Lambda function's timeout.
• E.The Amazon SES bounce rate metric is too high.

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A company is planning to use AWS CodeDeploy to deploy an application to Amazon Elastic Container Service (Amazon ECS) During the deployment of a new version of the application, the company initially must expose only 10% of live traffic to the new version of the deployed application. Then, after 15 minutes elapse, the company must route all the remaining live traffic to the new version of the deployed application.
Which CodeDeploy predefined configuration will meet these requirements?

• A.CodeDeployDefault ECSCanary10Percent15Minutes
• B.CodeDeployDefault LambdaCanary10Percent5Minutes
• C.CodeDeployDefault LambdaCanary10Percent15Minutes
• D.CodeDeployDefault ECSLinear10PercentEvery1 Minutes

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