DevOps / Github Interview questions

What is GitHub Actions?

GitHub Actions is GitHub's built-in automation and CI/CD system. It runs workflows, defined as YAML files inside a repository's .github/workflows/ directory, in response to events like a push, a pull request, a schedule, or a manual trigger.

A workflow is made up of one or more jobs, each running on a runner (GitHub-hosted or self-hosted), and each job is made up of ordered steps that either run shell commands or invoke a reusable "action" pulled from GitHub's Marketplace or another repository. This action-based reuse model, where a step can be as simple as uses: actions/checkout@v4, is what distinguishes Actions' architecture from writing every pipeline step by hand.

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GitHub Actions workflow files live in which directory? .github/workflows/

✓ Correct! Well done.

ci/pipelines/

✗ Try again if not.

.actions/config/

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A GitHub Actions step can reuse pre-built functionality via: The run keyword only

✗ Try again if not.

The uses keyword, referencing a reusable action

✓ Correct! Well done.

Editing the runner's operating system directly

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