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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Author and maintain actions | 15–20% | - Test and validate custom actions - Choose action types: JavaScript, Docker, Composite - Define action metadata and inputs/outputs - Package, publish, and version actions |
| Topic 2: Consume and troubleshoot workflows | 15–20% | - Interpret workflow runs and logs - Diagnose and resolve common failures - Manage dependencies and versioning - Optimize performance and reliability |
| Topic 3: Author and manage workflows | 20–25% | - Use caching, artifacts, and storage - Implement reusable workflows and templates - Configure workflow triggers and events - Work with secrets, variables, and contexts - Manage runners and execution environments |
| Topic 4: Manage GitHub Actions for the enterprise | 20–25% | - Monitor usage and compliance - Configure organization and repository policies - Deploy and manage self-hosted runners - Control access and permissions at scale |
| Topic 5: Secure and optimize automation | 10–15% | - Implement environment protections and approvals - Apply security best practices - Verify and trust marketplace actions - Mitigate injection and privilege risks |
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71. Frage
As a developer, one of your workflows will require XCode version 11.2 hosted on macOS Catalina (i.e., v10.15). You've already created and configured a self-hosted runner to conform to those requirements and registered it with your organization. What else should you do to ensure that the workflow accesses the correct runner instance? (Each answer presents a complete solution. Choose three.)
Antwort: B,C,E
Begründung:
[C, F] Using custom labels to route jobs
You can create custom labels and assign them to your self-hosted runners at any time. Custom labels let you send jobs to particular types of self-hosted runners, based on how they're labeled.
[E] Using default labels to route jobs
A self-hosted runner automatically receives certain labels when it is added to GitHub Actions.
These are used to indicate its operating system and hardware platform:
self-hosted: Default label applied to self-hosted runners.
linux, windows, or macOS: Applied depending on operating system.
x64, ARM, or ARM64: Applied depending on hardware architecture.
You can use your workflow's YAML to send jobs to a combination of these labels. In this example, a self-hosted runner that matches all three labels will be eligible to run the job:
runs-on: [self-hosted, linux, ARM64]
self-hosted - Run this job on a self-hosted runner.
linux - Only use a Linux-based runner.
ARM64 - Only use a runner based on ARM64 hardware.
Reference:
https://docs.github.com/en/actions/how-tos/manage-runners/self-hosted-runners/use-in-a- workflow
72. Frage
Disabling a workflow allows you to stop a workflow from being triggered without having to delete the file from the repo. In which scenarios would temporarily disabling a workflow be most useful? (Choose two.)
Antwort: D,E
Begründung:
If a workflow depends on an external service that is down, disabling the workflow temporarily will prevent it from running and sending requests to the service, thus avoiding failed requests or unnecessary retries.
If a workflow is causing a negative impact on external services by generating too many requests or incorrect data due to a bug, temporarily disabling the workflow will stop this behavior while the issue is fixed.
73. Frage
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.
Antwort: C,D
Begründung:
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.
74. Frage
As a developer, you are using a Docker container action in your workflow. What is required for the action to run successfully?
Antwort: B
Begründung:
For a Docker container action to run in a GitHub Actions workflow, the runner must have Docker installed. The runs-on attribute of the job should specify an environment that supports Docker, typically a Linux environment (e.g., ubuntu-latest), since Docker is widely supported and commonly used in Linux-based environments.
75. Frage
As a DevOps engineer, you are developing workflows to build an application. You have a requirement to create the build targeting multiple node versions. Which code block should you use to define the workflow?
Antwort: A
Begründung:
Use keywords strategy and matrix in that order.
Last line should be node-version: ${{ matrix.node-ver}}
Reference:
https://docs.github.com/en/actions/how-tos/write-workflows/choose-what-workflows-do/run-job- variations
76. Frage
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