GH-900 Practice Test

Sample GH-900 Practice Questions

10 real questions from the free GH-900bank. Pick an answer in your head, then open “Show answer” for the explanation.

1. 1. GitHub offers three repository notification subscription levels. What are they?

   • A. Watching (all activity), Participating and @mentions (only when directly involved), and Ignoring (no notifications)
   • B. Active (real-time push), Digest (daily email summary), and Muted (weekly digest)
   • C. Full (commits and activity), Partial (issues and PRs), and Minimal (security alerts)
   • D. Owner (broad activity), Contributor (activity you participate in), and Visitor (no notifications)
   Show answer

   Correct answer: A

   GitHub repository notification subscriptions have three levels: Watching (receive notifications for all activity in the repository), Participating and @mentions (receive notifications only when you comment, are assigned, or are @mentioned - the default), and Ignoring (receive no notifications at all for the repository, even if @mentioned).

2. 2. What is rebasing in Git?

   • A. The process of creating a copy of a repository under a different organizational namespace
   • B. A process that moves or replays a sequence of commits from one branch onto another, resulting in a linear history
   • C. A method to recover deleted branches by replaying their commits from the reflog
   • D. The act of resetting the default branch pointer to an older commit in the repository history
   Show answer

   Correct answer: B

   Git rebase moves or "replays" a sequence of commits from one branch onto another, resulting in a clean, linear commit history. Unlike merge (which creates a merge commit), rebase rewrites commit history. It is commonly used to integrate the latest main branch changes into a feature branch, but should be avoided on shared public branches as it rewrites history.

3. 3. What is GitHub Enterprise?

   • A. A set of GitHub plans (Enterprise Cloud and Enterprise Server) designed for large organizations needing advanced security, compliance, and administrative controls
   • B. A premium subscription for individual developers that provides unlimited private repositories and Actions minutes
   • C. A specialized GitHub account type exclusively for open-source project maintainers
   • D. An API tier that provides higher rate limits for automated workflows and large-scale integrations
   Show answer

   Correct answer: A

   GitHub Enterprise provides advanced features for large organizations, available as GitHub Enterprise Cloud (hosted by GitHub) and GitHub Enterprise Server (self-hosted on-premises). It includes SAML SSO, audit logs, enterprise managed users, advanced security, and organization-wide policy management.

4. 4. What is GitHub?

   • A. A cloud-based platform for hosting Git repositories and enabling team collaboration
   • B. A command-line tool for creating and managing Git commits locally
   • C. A programming language used to automate Git operations and scripts
   • D. A local backup tool for saving copies of source code files
   Show answer

   Correct answer: A

   GitHub is a web-based platform that provides hosting for Git repositories. It adds collaboration features such as pull requests, issues, GitHub Actions, GitHub Projects, and Discussions on top of Git's core version control capabilities.

5. 5. What is the primary purpose of version control?

   • A. To track changes to files over time and enable collaboration
   • B. To compress and archive large software projects for distribution
   • C. To automatically test code for bugs before deployment
   • D. To deploy applications to cloud infrastructure
   Show answer

   Correct answer: A

   Version control systems track changes to files over time, allowing teams to collaborate, view history, and revert to previous states. This makes it easier to manage complex projects and recover from mistakes.