CAD Continuous Integration and Delivery Questions and Answers Flashcards

What is the primary purpose of a build pipeline in continuous integration?

Answer: To automate the process of compiling, testing, and packaging code changes

A build pipeline automates compiling, running tests, and packaging code so that integration issues are detected quickly and consistently.

In a CI/CD workflow, what does 'trunk-based development' emphasize?

Answer: Developers committing to a single shared branch frequently

Trunk-based development encourages frequent commits to a single main branch to reduce merge conflicts and enable continuous integration.

Which practice helps ensure that a deployment can be safely rolled back in a continuous delivery pipeline?

Answer: Using blue-green or canary deployment strategies

Blue-green and canary deployments allow quick rollback by maintaining a previous stable environment alongside the new release.

What is a 'flaky test' in the context of continuous integration?

Answer: A test that produces inconsistent pass/fail results without code changes

A flaky test intermittently passes or fails on the same code, undermining confidence in CI results and slowing down development.

Why should database schema migrations be backward-compatible in a continuous delivery environment?

Answer: To allow the previous application version to function during a rolling deployment

Backward-compatible migrations ensure that both old and new application versions can run simultaneously during a rolling or staged deployment.

What role does a container registry play in a CI/CD pipeline?

Answer: It stores and versions built container images for consistent deployment across environments

A container registry stores versioned container images so that the exact same artifact built in CI can be deployed consistently to any environment.