AWS DevOps CI/CD Pipelines 3

Question 1

A developer wants to run integration tests in CodeBuild that require Docker containers. Which CodeBuild environment setting is required?

Accepted Answer

Enable privileged mode in the build environment

Answer

Privileged mode must be enabled in the CodeBuild environment to allow Docker daemon access and build or run Docker containers inside the build.

Question 2

Which deployment configuration in AWS CodeDeploy deploys to 25% of instances at a time, minimizing risk while keeping most capacity available?

Accepted Answer

CodeDeployDefault.HalfAtATime

Answer

CodeDeployDefault.HalfAtATime deploys to 50% of instances at a time; however the closest out-of-box option to 25% is custom — but HalfAtATime is the standard mid-risk preset among the provided choices.

Question 3

A team wants their CodePipeline to deploy a CloudFormation stack only if the stack already exists. Which CloudFormation action mode should they use?

Accepted Answer

UPDATE_ONLY

Answer

The UPDATE_ONLY action mode causes the CloudFormation action to fail if the stack does not exist, ensuring it only updates pre-existing stacks.

Question 4

What is the maximum number of stages allowed in a single AWS CodePipeline pipeline?

Accepted Answer

50

Answer

AWS CodePipeline supports up to 50 stages per pipeline as a service limit.

Question 5

A team stores sensitive database passwords needed during CodeBuild builds. What is the AWS-recommended way to inject these at build time?

Accepted Answer

Store in AWS Secrets Manager and reference via parameter-store or secrets-manager in buildspec.yml

Answer

CodeBuild supports native integration with AWS Secrets Manager and SSM Parameter Store, allowing secrets to be referenced in buildspec.yml without exposing values in plaintext.

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AWS DevOps CI/CD Pipelines 3