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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Author and maintain actions | 15–20% | - Package, publish, and version actions - Define action metadata and inputs/outputs - Test and validate custom actions - Choose action types: JavaScript, Docker, Composite |
| Topic 2: Author and manage workflows | 20–25% | - Use caching, artifacts, and storage - Manage runners and execution environments - Implement reusable workflows and templates - Work with secrets, variables, and contexts - Configure workflow triggers and events |
| Topic 3: Manage GitHub Actions for the enterprise | 20–25% | - Control access and permissions at scale - Deploy and manage self-hosted runners - Configure organization and repository policies - Monitor usage and compliance |
| Topic 4: Secure and optimize automation | 10–15% | - Implement environment protections and approvals - Apply security best practices - Mitigate injection and privilege risks - Verify and trust marketplace actions |
| Topic 5: Consume and troubleshoot workflows | 15–20% | - Optimize performance and reliability - Manage dependencies and versioning - Interpret workflow runs and logs - Diagnose and resolve common failures |
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問題 #47
As a DevOps engineer, you are developing a composite action. You have a step that needs to be executed against a subdirectory. Which code snippet should you use within the composite action to specify the directory?
答案：B
解題說明：
For a composite action, commands are defined inside the runs.steps section of the action metadata file. When a specific command must execute from a particular folder, the correct key is working-directory, and it must be applied at the individual run step level. Option D is correct because it keeps using: " composite " at the runs level and applies working-directory: ${{ inputs.dir }} directly to the step that runs the script. Option A is incorrect because directory is not a valid GitHub Actions run-step key. Option B incorrectly places directory at the runs level. Option C uses the right keyword but places it at the wrong level. This tests composite action metadata syntax and correct step-level execution configuration.
問題 #48
What metadata file in a custom action defines the main entry point?
答案：D
解題說明：
The action.yml file is the metadata file in a custom GitHub Action that defines the main entry point, including information such as the inputs, outputs, description, and the runs key that specifies the main entry point (e.g., a script or a Docker container).
問題 #49
In GitHub Enterprise Cloud, where do you set the policy that allows only enterprise hosted actions and reusable workflows to run?
答案：A
解題說明：
The enterprise Actions policy is the centralized place where enterprise owners enforce which actions and reusable workflows are permitted across all organizations in GitHub Enterprise Cloud. From this scope you can require that only actions and reusable workflows hosted within the enterprise are allowed to run, and this policy flows down to organizations and repositories to ensure consistent enforcement.
問題 #50
In GitHub Actions, where should you declare custom environment variables so they are accessible across all jobs and steps in a single workflow run?
答案：C
解題說明：
The correct option is Set env in the workflow YAML because defining environment variables at the top level of a workflow makes them available to every job and step in that single run.
In a workflow file you can declare a top level mapping for environment variables with key value pairs. This top level scope propagates the values to all jobs and steps in the run and you can override them at job or step scope when necessary. This is the most direct way to share non secret configuration across the entire workflow execution.
問題 #51
What are the two most significant advantages of adding documentation while distributing custom actions?
Each correct answer presents a complete solution.
NOTE: Each correct answer is worth one point.
答案：B,D
解題說明：
Documentation is critical when distributing custom GitHub Actions because users need to understand what the action does and how to use it correctly. A good README or marketplace description explains the action's purpose, required inputs, outputs, permissions, and expected behavior. This directly supports option B.
Documentation should also include practical usage examples, such as a workflow snippet showing the uses:
syntax and required with: inputs, which supports option C. Option A is incorrect because documentation does not create a README inside the consuming workflow; the action author provides documentation in the action repository. Option D is also incorrect because documentation does not automatically generate workflow auto-completion. This topic tests custom action publishing and usability best practices.
問題 #52
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