AWS Certified DevOps Engineer – Professional (DOP-C02) — Question 126

A development team manually builds an artifact locally and then places it in an Amazon S3 bucket. The application has a local cache that must be cleared when a deployment occurs. The team runs a command to do this, downloads the artifact from Amazon S3, and unzips the artifact to complete the deployment.

A DevOps team wants to migrate to a CI/CD process and build in checks to stop and roll back the deployment when a failure occurs. This requires the team to track the progression of the deployment.

Which combination of actions will accomplish this? (Choose three.)

Answer options

• A. Allow developers to check the code into a code repository. Using Amazon EventBridge, on every pull into the main branch, invoke an AWS Lambda function to build the artifact and store it in Amazon S3.
• B. Create a custom script to clear the cache. Specify the script in the BeforeInstall lifecycle hook in the AppSpec file.
• C. Create user data for each Amazon EC2 instance that contains the clear cache script. Once deployed, test the application. If it is not successful, deploy it again.
• D. Set up AWS CodePipeline to deploy the application. Allow developers to check the code into a code repository as a source for the pipeline.
• E. Use AWS CodeBuild to build the artifact and place it in Amazon S3. Use AWS CodeDeploy to deploy the artifact to Amazon EC2 instances.
• F. Use AWS Systems Manager to fetch the artifact from Amazon S3 and deploy it to all the instances.

Correct answer: B, D, E

Explanation

The correct options B, D, and E create a robust CI/CD pipeline. Option B ensures the cache is cleared before the installation process, while options D and E facilitate the automation of the build and deployment process via AWS services. Options A, C, and F are not aligned with the requirements of tracking deployment progression or integrating into a CI/CD workflow effectively.