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Microsoft GH-200 Exam Overview:

Certification Vendor:	Microsoft / GitHub
Exam Name:	GitHub Actions Exam
Exam Number:	GH-200
Available Languages:	English
Exam Duration:	120 minutes
Related Certifications:	GitHub Foundations GitHub Advanced Security GitHub Copilot
Exam Format:	Scenario-based questions, Multiple choice, Multiple response
Recommended Training:	Microsoft Learn: GitHub Actions learning paths GitHub Skills - Actions courses
Exam Registration:	Microsoft Learn Certification Page GH-200 Study Guide
Sample Questions:	Microsoft GH-200 Sample Questions
Exam Way:	Online proctored (Pearson VUE / Microsoft Learn credentialing system)
Pre Condition:	Recommended: intermediate experience with GitHub, CI/CD, and GitHub Actions workflows; familiarity with YAML and DevOps concepts
Official Syllabus URL:	https://learn.microsoft.com/en-us/credentials/certifications/resources/study-guides/gh-200

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Microsoft GH-200 Exam Syllabus Topics:

Topic	Details
Topic 1	Author and Maintain Workflows: This section of the exam measures skills of DevOps Engineers and Automation Specialists and covers building and managing workflows triggered by events such as pushes, scheduled times, manual triggers, and webhooks. It includes understanding workflow components like jobs, steps, actions, and runners, syntax correctness, environment variables, secrets management, and dependencies between jobs. Candidates will also demonstrate practical abilities to create workflows for various purposes, including publishing packages, using service containers, routing jobs, and deploying releases to cloud providers.
Topic 2	Author and Maintain Actions: This domain evaluates the abilities of Action Developers and Automation Engineers to select and create suitable types of GitHub Actions, such as JavaScript, Docker containers, or run steps. It emphasizes troubleshooting action code, understanding the components and file structures of actions, and using workflow commands within actions to communicate with runners, including exit code management.
Topic 3	Manage GitHub Actions in the Enterprise: This section measures the expertise of Enterprise Administrators and Platform Engineers in distributing and managing GitHub Actions and workflows at the organizational level. It includes reuse and sharing of templates, strategies for managing reusable components via repositories and naming conventions, controlling access to actions, setting organization-wide usage policies, and planning maintenance to ensure efficient enterprise-wide deployment of GitHub Actions.
Topic 4	Consume Workflows: This domain targets Software Developers and Quality Assurance Engineers and focuses on interpreting workflow runs and their outcomes. It covers identifying triggering events, reading workflow configurations, troubleshooting failures by analyzing logs, enabling debug logging, managing environment variables, caching dependencies, and passing data between jobs. Candidates also manage workflow runs, artifacts, approvals, and status badges, as well as locating workflows within repositories and leveraging organizational templated workflows.

Microsoft GitHub Actions Sample Questions (Q44-Q49):

NEW QUESTION # 44
You are a DevOps engineer working on a custom action. You want to conditionally run a script at the start of the action, before the main entrypoint. Which code block should be used to define the metadata file for your custom action?

A. runs:
using: ' node16 '
pre: ' start.js '
pre-if: github.event_name == ' push '
main: ' index.js '
B. runs:
using: ' node16 '
before: ' start.js '
before-if: github.event_name == ' push '
main: ' index.js '
C. runs:
using: ' node16 '
pre-if: github.event_name == ' push ' then ' start.js '
main: ' index.js '
D. runs:
using: ' node16 '
start: ' start.js '
start-if: github.event_name == ' push '
main: ' index.js '

Answer: A

Explanation:
For JavaScript custom actions, the metadata file supports lifecycle scripts through the runs section. The correct key for a script that runs before the main action entrypoint is pre, and the correct conditional key for controlling whether that pre-script runs is pre-if. Therefore, option B is the only valid metadata structure.
GitHub Actions does not use start, start-if, before, or before-if as action metadata keys. Option C is also invalid because pre-if only defines a condition; it cannot contain both a condition and a script reference in one line. In GitHub Actions exam terms, this tests custom action metadata, JavaScript action lifecycle hooks, and conditional execution before the main action logic.

NEW QUESTION # 45
What metadata file in a custom action defines the main entry point?

A. main.yml
B. index.js
C. action.js
D. action.yml

Answer: D

Explanation:
The metadata file that defines the main entry point for a custom GitHub Action is action.yml (or action.yaml).
This file, located in the root directory of your action's repository, uses YAML syntax and includes a runs key that specifies how the action is executed and which script is the main entry point.
Key fields in the action.yml file
name: The name of your action displayed in the GitHub Actions UI.
description: A short description of the action.
runs: This required key specifies the execution environment and the main entry point.
For a JavaScript action, the runs field includes using (e.g., node20) and main (e.g., index.js) to define the runtime and the primary script file.
For a Docker container action, the runs field includes using: 'docker' and image (e.g., 'Dockerfile') to point to the Docker build file or image.
inputs: Optional parameters that allow users to pass data to your action.
outputs: Optional output parameters that the action can produce for use by subsequent steps in a workflow.
Reference:
https://docs.github.com/en/actions/reference/workflows-and-actions/metadata-syntax

NEW QUESTION # 46
When should you use the GITHUB_TOKEN in a workflow?

A. When you want to make authenticated calls to the GitHub API.
B. When you want to call an action from GitHub Marketplace.
C. When you want to access repository-level secrets.
D. When you want to connect to the runner via SSH.

Answer: A

Explanation:
GitHub automatically creates a GITHUB_TOKEN for workflow jobs so the workflow can authenticate to GitHub without requiring a separately maintained personal access token for many repository-scoped operations. A common use is making authenticated REST API, GraphQL API, or GitHub CLI requests against resources that the token has permission to access. The token ' s capabilities are governed by the workflow ' s permissions configuration and the repository or organization policy. It is not an SSH credential for connecting to a runner, and it is not required merely to read encrypted repository secrets that GitHub makes available through the secrets context. Likewise, simply invoking a public Marketplace action does not inherently require explicitly passing GITHUB_TOKEN. Therefore, making authenticated GitHub API calls is the correct use described by option A.

NEW QUESTION # 47
As a developer, how can you identify a JavaScript action on GitHub?

A. The action.yml metadata file has the runs.using value set to node16.
B. The action.yml metadata file references a package.json file.
C. The action's repository name includes the keyword "JavaScript."
D. The action ' s repository includes a js.yml file in the .github/workflows directory.

Answer: A

Explanation:
A JavaScript action is identified in its action metadata file by the runs.using runtime value. In older exam-style content, this is commonly shown as node16; in current GitHub documentation, supported JavaScript runtimes have moved forward, but the principle remains the same: JavaScript actions declare a Node.js runtime under runs.using and specify the main JavaScript file under runs.main.
Option A is not reliable because a repository can contain package.json without being a JavaScript action. Option B is unrelated because workflow files do not define the action type. Option C is naming- based and has no technical meaning. GitHub metadata syntax defines runs.using as the runtime for JavaScript actions.

NEW QUESTION # 48
Which scopes are available to define custom environment variables within a workflow file? (Choose three.)

A. a specific step within a job, by using jobs.<job_id>.steps[*].env
B. all jobs being run on a single Actions runner, by using runner.env at the top of the workflow file
C. the entire stage, by using env at the top of the defined build stage
D. the contents of a job within a workflow, by using jobs.<job_id>.env
E. within the run attribute of a job step
F. the entire workflow, by using env at the top level of the workflow file

Answer: A,E,F

Explanation:
You can define environment variables for the entire workflow by using the env key at the top level of the workflow file. These environment variables will be available to all jobs and steps within the workflow.
Environment variables can also be set within the run attribute of a job step, and these variables will be scoped only to that specific step.
You can set environment variables for specific steps within a job by using jobs.<job_id>.steps[*].env, which allows you to define variables that will only be available to that step.

NEW QUESTION # 49
......

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