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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Author and Maintain Actions | 15-20% | - Create custom actions
|
| Topic 2: Secure and Optimize Automation | 10-15% | - Optimization
|
| Topic 3: Manage GitHub Actions for the Enterprise | 20-25% | - Runner management
|
| Topic 4: Author and Manage Workflows | 20-25% | - Configure workflow triggers and events
|
| Topic 5: Consume and Troubleshoot Workflows | 15-20% | - Analyze workflow runs
|
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NEW QUESTION # 126
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: B
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 # 127
What will the output be for the following event trigger block in a workflow?
Answer: A
Explanation:
Based on your configuration, the workflow will trigger in these three specific scenarios:
Issue Opened: When a brand-new issue is created.
Issue Edited: When the title or body of an existing issue is changed.
Comment Created: When someone adds a new comment to an issue or pull request.
Reference:
https://forgejo.org/docs/next/user/actions/reference
NEW QUESTION # 128
You need to store an API key in a GitHub repository. The solution must ensure that the key remains secure and can be used in a GitHub Actions workflow. What should you do?
Answer: C
Explanation:
To use a specific API key in your GitHub Actions workflow, you can store it as a Repository Secret and reference it using the secrets context in your YAML file. This ensures the key is encrypted and masked in your workflow logs.
1. Store the API Key as a Secret
Navigate to your repository on GitHub.com.
Click Settings > Secrets and variables > Actions.
Select the Secrets tab and click New repository secret.
In the Name field, enter a descriptive identifier (e.g., MY_API_KEY).
Rules: Use only alphanumeric characters or underscores; cannot start with a number or GITHUB_.
In the Secret field, paste your API key value and click Add secret.
2. Reference the Secret in your YAML File
In your .github/workflows/your-workflow.yml file, access the secret using the syntax
${{ secrets.NAME_OF_SECRET }}. It is a best practice to map it to an environment variable within a specific step rather than echoing it directly.
Example Workflow in yaml:
name: Use API Key Example
on: [push]
jobs:
my-job:
runs-on: ubuntu-latest
steps:
- name: Run script with API Key
# Map the secret to an environment variable for the runner
env:
API_KEY: ${{ secrets.MY_API_KEY }}
run: |
# Use the environment variable in your commands
curl -H "Authorization: Bearer $API_KEY" https://api.example.com
Reference:
https://docs.github.com/actions/security-guides/using-secrets-in-github-actions
NEW QUESTION # 129
When reviewing an action for use, what file defines its available inputs and outputs?
Answer: E
Explanation:
A custom GitHub Action's inputs, outputs, and other configurations are defined in its metadata file, which must be named action.yml or action.yaml and placed at the root of the action's repository. This YAML file specifies how the action runs (e.g., using Docker or JavaScript) and provides the metadata for its inputs and outputs, which are then used by workflows that call the action.
Key aspects of the action.yml or action.yaml file
Format: It uses YAML syntax.
Location: It must be in the root directory of your action's repository.
Contents: It defines the action's name, description, inputs, outputs, and the runs configuration to specify the execution environment (like a Docker image or JavaScript file) and entrypoint.
Inputs and Outputs: The file includes inputs and outputs sections to declare the data the action accepts and produces, respectively.
Reference:
https://docs.github.com/en/actions/reference/workflows-and-actions/metadata-syntax
NEW QUESTION # 130
As a developer, your Actions workflow often reuses the same outputs or downloaded dependencies from one run to another. To cache dependencies for a job, you are using the GitHub cache action. Which input parameters are required for this action? (Each correct answer presents part of the solution. Choose two.)
Answer: B,C
Explanation:
Input parameters for the cache action
[C] key: Required The key created when saving a cache and the key used to search for a cache.
It can be any combination of variables, context values, static strings, and functions. Keys have a maximum length of 512 characters, and keys longer than the maximum length will cause the action to fail.
[A] path: Required The path(s) on the runner to cache or restore.
Reference:
https://docs.github.com/en/actions/reference/workflows-and-actions/dependency-caching
NEW QUESTION # 131
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