DVA-C02 Deployment Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✓

  Review the buildspec.yml file for syntax errors

  Why this is correct

  When a CodePipeline build stage fails, the `buildspec.yml` file is the primary configuration for the AWS CodeBuild project responsible for compiling code, running tests, and packaging artifacts. Syntax errors within this YAML file, such as incorrect indentation, invalid commands, or missing required phases, will directly prevent CodeBuild from executing its defined steps successfully. Reviewing the CodeBuild project logs, which detail the execution of each command specified in `buildspec.yml`, is crucial for identifying the exact line or phase where the build process encountered an unrecoverable error.

• ✗

  Verify the CodeDeploy application revision

  Why it's wrong here

  Verifying the CodeDeploy application revision is incorrect because CodeDeploy operates during the deployment stage of a CodePipeline, not the build stage. CodeDeploy is responsible for deploying application revisions to target environments, such as EC2 instances or ECS services, after the build artifacts have been successfully produced by CodeBuild. A failure in the build stage, which occurs prior to deployment, indicates an issue with the source code compilation or packaging, not with how CodeDeploy would handle a revision that hasn't even been generated yet.

• ✗

  Examine the Elastic Beanstalk environment logs

  Why it's wrong here

  Examining Elastic Beanstalk environment logs is an inappropriate step for diagnosing a build failure because these logs primarily capture runtime issues within the deployed application or problems with the underlying infrastructure. Elastic Beanstalk logs, including application server logs (e.g., Apache, Nginx), system logs, and deployment logs, only become relevant once an application has been successfully built and deployed to the environment. A build failure in CodePipeline means the application package never reached the Elastic Beanstalk environment for deployment, thus its logs would not contain information about the build process itself.

• ✗

  Check AWS CloudTrail for API calls

  Why it's wrong here

  Checking AWS CloudTrail for API calls is generally not the correct diagnostic approach for a CodePipeline build failure. CloudTrail records API activity across your AWS account, showing who made what call, when, and from where. While it can indicate if a CodeBuild project was invoked or if there were permission issues preventing CodeBuild from accessing resources, it does not provide granular details about internal build process failures, such as syntax errors within the `buildspec.yml` or compilation errors in the source code. CodeBuild's own detailed build logs are the authoritative source for such diagnostic information.