Microsoft GitHub Foundations GH-900 Exam Dumps: Updated Questions & Answers (July 2026)

In Git, a branch is a fundamental concept that represents an independent line of development within a project. Here ' s a more detailed explanation:

Branch in Git:

Option C is correct because a branch in Git is essentially a separate, isolated copy of the project ' s codebase where you can make changes without affecting the main codebase. Branches allow developers to work on features, fixes, or experiments in parallel to the main project.

Other Options:

Option A is incorrect because while a branch does point to a specific commit (which represents a snapshot of the project), the description lacks the emphasis on the isolated and parallel development aspect that is critical to the understanding of branches.

Option B is incorrect because a branch is not a physical copy stored on disk; it is a logical reference within the repository.

Option D is incorrect because that description better fits the concept of a fork, not a branch. A fork is a new repository that is a copy of another repository, usually used to contribute back to the original ( " upstream " ) repository.

On GitHub, certain actions automatically subscribe you to conversations so that you receive notifications about further activity in that thread.

Opening a Pull Request or Issue:

Option C is correct because when you open a pull request or issue, you are automatically subscribed to the conversation and will receive notifications for any updates.

Commenting on a Thread:

Option D is correct because commenting on an issue or pull request automatically subscribes you to that thread, ensuring you are notified of further comments or changes.

Being Assigned to an Issue or Pull Request:

Option E is correct because when you are assigned to an issue or pull request, you are automatically subscribed to notifications related to it.

Incorrect Options:

Option A is incorrect because pushing a commit to the default branch does not automatically subscribe you to conversations.

Option B is incorrect because being added as a repo admin does not automatically subscribe you to specific conversations unless you engage with them.

Milestones in GitHub help teams group related issues and pull requests around a shared goal, release, sprint, or deadline. They provide a progress-tracking mechanism by showing which linked items are open and which are complete. For example, a team may create a milestone for a product release and attach all required bugs, features, and documentation tasks to it. This gives maintainers a clear view of progress toward that larger objective. Custom fields are part of GitHub Projects, but they are not the main purpose of milestones. Charts belong to insights and reporting features, while automation is usually handled with GitHub Actions or project workflows. Milestones are mainly for organizing and tracking related work.

From a discussion post on GitHub, a user can Create an issue from the discussion. This feature allows users to turn a discussion into an actionable item by creating an issue directly from the discussion thread. This is particularly useful when a conversation identifies a bug, task, or enhancement that needs to be tracked in the repository.

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GitHub Desktop is a local desktop application that provides a graphical user interface for common Git operations. Instead of using the command line, users can clone repositories, create branches, commit changes, view diffs, and push or pull changes through a visual interface. It does not replace github.com because many collaboration features, such as repository settings, advanced pull request review, issues, discussions, organizations, and security administration, are still handled through GitHub.com. GitHub Desktop is also not a self-hosted GitHub server and is not limited only to Windows, because it is available for both Windows and macOS. Its main purpose is to simplify local Git repository management for users who prefer a GUI over command-line Git.

GitHub automatically subscribes users to conversations when their direct involvement indicates they may need future notifications. Being at-mentioned in a thread subscribes the mentioned user because GitHub treats the mention as a direct request for attention. Opening a pull request also subscribes the author because they own the proposed change and need updates about reviews, comments, checks, and merge activity. Commenting on an issue or pull request subscribes the commenter because they have participated in the conversation and may need follow-up notifications. Deleting a branch does not represent participation in a specific conversation, and changing repository visibility is an administrative repository action rather than a conversation-level activity. Automatic subscriptions help users stay informed about discussions relevant to them.

The feature you can use to merge proposed changes in a repository on GitHub is Pull requests. Pull requests are a core feature of GitHub, allowing developers to propose changes to a codebase, review code, discuss the changes, and eventually merge them into the main branch. This collaborative workflow ensures that code is reviewed and vetted before becoming part of the project.

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When using GitHub Codespaces, you can customize several aspects of the development environment:

Shell: You can choose the default shell to be used in the Codespace, such as Bash, Zsh, or PowerShell.

Name: Users can customize the name of their Codespace for easier identification.

Default editor: You can choose which editor to use within the Codespace, such as Visual Studio Code or others that may be supported.

Branch protections and the operating system are not customizable for an individual Codespace within GitHub, making the options Shell, Name, and Default editor the correct answers.

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