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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Author and manage workflows | 20–25% | - Work with secrets, variables, and contexts - Configure workflow triggers and events - Manage runners and execution environments - Use caching, artifacts, and storage - Implement reusable workflows and templates |
| Topic 2: Consume and troubleshoot workflows | 15–20% | - Interpret workflow runs and logs - Optimize performance and reliability - Manage dependencies and versioning - Diagnose and resolve common failures |
| Topic 3: Secure and optimize automation | 10–15% | - Apply security best practices - Mitigate injection and privilege risks - Implement environment protections and approvals - Verify and trust marketplace actions |
| Topic 4: Manage GitHub Actions for the enterprise | 20–25% | - Control access and permissions at scale - Configure organization and repository policies - Monitor usage and compliance - Deploy and manage self-hosted runners |
| Topic 5: Author and maintain actions | 15–20% | - Choose action types: JavaScript, Docker, Composite - Test and validate custom actions - Define action metadata and inputs/outputs - Package, publish, and version actions |
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NEW QUESTION # 76
You are developing a GitHub Actions workflow that will build a .NET app.
You need to provide the workflow with access to a sensitive enterprise license. The solution must ensure that the license is NOT exposed publicly or hardcoded.
What should you do?
Answer: C
Explanation:
To build a .NET application while securely handling a sensitive enterprise license on a GitHub- hosted Ubuntu runner, you should store the Base64-encoded license as a GitHub Repository Secret.
Key Security Considerations
Ephemeral Runners: GitHub-hosted runners are wiped after every job, meaning the decoded license file is automatically deleted.
Log Redaction: GitHub attempts to redact any output that matches your secret value, but manual transformations (like decoding) should still be handled carefully.
No Artifacts: Avoid using upload-artifact for any directories containing the decoded license, as artifacts can be downloaded by anyone with repository access
1. Store the License as a Secret
First, encode your license file to Base64 locally to ensure it is stored as a single string without formatting issues:
# On your local machine (Linux/macOS)
cat license.lic | base64 -w 0 > license_base64.txt
Then, add this string to your repository by navigating to Settings > Secrets and variables > Actions > New repository secret. Name it ENTERPRISE_LICENSE_BASE64.
2. Configure the GitHub Actions Workflow
Create a .yml file in .github/workflows/ that decodes the secret into a temporary file on the Ubuntu runner. GitHub automatically masks the secret value in logs, ensuring it remains private.
name: Build .NET App with License
on:
push:
branches: [ "main" ]
jobs:
build:
runs-on: ubuntu-latest # Use GitHub-hosted Ubuntu runner
steps:
- name: Checkout code
uses: actions/checkout@v4
- name: Setup .NET
uses: actions/setup-dotnet@v4
with:
dotnet-version: '8.0.x' # Specify your version
- name: Decode License
shell: bash
run: |
# Decode the secret into a file for the build process
echo "${{ secrets.ENTERPRISE_LICENSE_BASE64 }}" | base64 --
decode > ./license.lic
# The runner is ephemeral; the file is destroyed when the job ends.
- name: Restore dependencies
run: dotnet restore
- name: Build Application
# Pass the license path if your build process requires it
run: dotnet build --configuration Release --no-restore /p:LicensePath=./license.lic
- name: Secure Cleanup (Optional)
if: always()
run: rm -f ./license.lic
Reference:
https://docs.github.com/actions/security-guides/using-secrets-in-github-actions
NEW QUESTION # 77
Which run: command will set a step's output?
Answer: C
Explanation:
The $GITHUB_OUTPUT file is used to pass data from one step to another in GitHub Actions. The echo command appends the key-value pair to this file, which sets the output variable (MY_OUTPUT) for the current step.
NEW QUESTION # 78
You are a developer, and your container jobs are failing on a self-hosted runner. Which requirements must you check to ensure that the self-hosted runner is properly configured? (Choose two.)
Answer: A,C
Explanation:
While Docker can run on various operating systems, Linux is often the most common and preferred OS for containerized workloads. Docker works well on Linux and is a widely-used platform for running containers.
For container jobs to run on a self-hosted runner, Docker must be installed and properly configured on the runner. Docker is required to build and run containerized workloads in a GitHub Actions workflow.
NEW QUESTION # 79
You create a self-hosted runner labeled as runner1.
You need to ensure that a GitHub Actions workflow job runs only on runner1.
Which YAML statement should you use?
Answer: D
Explanation:
To target a specific self-hosted runner, the job must use runs-on with labels that match that runner. A self-hosted runner normally has the self-hosted label plus default labels and any custom labels you assign. Since the runner is labeled runner1, the workflow should specify both self-hosted and runner1:
runs-on: [self-hosted, runner1]. GitHub Actions will then route the job only to a self-hosted runner matching all specified labels. Option A targets a different custom label. Option B is malformed and also mixes a self-hosted label with a GitHub-hosted runner label. Option D targets any self-hosted runner, not specifically runner1. GitHub documents that an array of runs-on labels requires a runner matching all listed labels.
NEW QUESTION # 80
As a DevOps engineer, you are developing a container action. You need to execute a cleanup script after completing the main script execution. Which code block should be used to define the cleanup script?
Answer: D
Explanation:
The correct syntax for specifying a cleanup script to be run after the main entry point is executed in a Docker-based GitHub Action is to use the post key. This ensures that cleanup.sh runs after the main script (main.sh) has completed.
NEW QUESTION # 81
......
Before starting the Microsoft GH-200 preparation, plan the amount of time you will allot to each topic, determine the topics that demand more effort and prioritize the components that possess more weightage in the Microsoft GH-200 Exam. This kind of polished approach is beneficial for a commendable grade in the Microsoft GH-200 Exam.
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