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GitHub Administrator
GH-100
GitHub Administration Questions and Answers

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Questions # 1:

You want to ensure a secret is automatically available to only workflows in internal and private repositories in the organization. Where do you configure the required access policy?

Options:

Actions policies

Runner groups

Rulesets

Organization secret

Answer

Explanation

You set the access policy on the Organization Secret itself - configuring its visibility so it’s scoped automatically to only internal and private repositories.

Questions # 2:

Which of the following is a key benefit of using GitHub Marketplace Apps in an enterprise?

Options:

They guarantee no downtime during enterprise GitHub maintenance windows

They often include integrations with external services, reducing the need for custom code

Apps eliminate the need for GitHub Actions entirely

All apps come pre-approved by GitHub's internal security team

Answer

Explanation

GitHub Marketplace Apps come with built‑in integrations to external services - so you can plug in things like CI servers, code-quality scanners, or deployment tools without writing and maintaining custom connectors.

Questions # 3:

What is the potential consequence of enabling multiple rulesets that apply to the same branch in a repository?

Options:

Only organization-level rulesets are enforced over repository-level ones

All applicable rulesets will be evaluated, and their combined rules enforced

Only the most recently created ruleset will be enforced

Rulesets will override each other, leading to unpredictable behavior

Answer

Explanation

If you enable multiple rulesets that target the same branch, GitHub will evaluate every matching ruleset and enforce the aggregate of their rules - so all constraints from all applicable rulesets apply.

Questions # 4:

A token was used to access an organization's resource via API. What fields in the audit log help determine who used it?

Options:

The token's permissions and the geographic region of access

The token expiration date

The GitHub Actions runner name

The token ID, requesting IP address, and associated user

Answer

Explanation

The audit log records the token’s identifier (the hashed_token value), the source IP address of the request, and the actor (the user or app) associated with that token, allowing you to trace exactly who used it.

Questions # 5:

You are an administrator and need to enforce a policy on forking private and internal repositories. Which options are available for configuring the policy at the enterprise level? (Each answer presents a complete solution. Choose three.)

Options:

Allow organization owners to administer the setting at the organization level.

Allow people who have access to private and internal repositories to fork these repositories.

Allow specific people or teams to fork private and internal repositories.

Disallow repository owners from administering the setting at the repository level.

Disallow forking of private and internal repositories.

Answer

A, B, E

Explanation

You can configure the enterprise policy to allow organization owners to administer the forking setting at the organization level, giving them control over how repos fork within their orgs.

You can choose to allow any user who already has access to a private or internal repo to fork it.

You can also set the policy to never allow forking of private or internal repositories across all organizations.

Questions # 6:

Which factor affects GitHub Actions pricing for GitHub-hosted runners on GitHub Enterprise Cloud?

Options:

Number of workflows defined in .github/workflows/

Number of contributors to the repository Explanation:Incorrect. Contributor count does not impact billing for Actions

Total number of repositories using Actions

Operating system used in the runner environment

Answer

Explanation

GitHub Actions billing for GitHub‑hosted runners is based on the number of minutes consumed and the operating system of the runner - Linux, Windows, and macOS each have different per‑minute rates.

Questions # 7:

How does GitHub handle secrets found via secret scanning in a public repository?

Options:

It alerts the service provider (e.g., AWS, Stripe).

It immediately blocks the commit to protect the secret.

It deletes the secret from the repository automatically.

It notifies the admin via webhook.

Answer

Explanation

When secret scanning detects a supported credential in a public repository, GitHub notifies the issuing service provider so they can revoke or rotate the exposed secret.

Questions # 8:

Which of the following is a key benefit of setting default read permissions across organizations?

Options:

Suits environments where all users need write access.

Improves collaboration by allowing users to modify content directly.

Increases efficiency in content creation and updates.

Enhances security by minimizing unintended modifications.

Answer

Explanation

Enforcing a default of Read for organization members ensures they can view content without the ability to push changes, reducing the risk of accidental or unauthorized modifications.

Questions # 9:

Which feature is unique to self-hosted runners?

Options:

Execute scripts before and after a job

Dynamic scaling

Automatic updates to the operating system

GPU support

Answer

Explanation

Self‑hosted runners support custom pre‑and post‑job scripts via runner hooks, letting you run arbitrary scripts before a job starts and after it finishes - capabilities not available on GitHub‑hosted runners.

Questions # 10:

What needs to be done to ensure that only specific repositories can access the runners in an organization runner group?

Options:

Use GitHub's meta API to configure access.

Add a label to the runner group.

Configure repository access in the runner group settings.

Configure the Actions Policies to "Only selected repositories".

Answer

Explanation

In the organization’s runner group settings, switch the access from “All repositories” to “Selected repositories” and then explicitly choose which repos may use those runners.

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