Git Advanced Quiz

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Expert Mode Activated! 🧠 Ready to dive into the internals? This quiz challenges your knowledge of bisecting, reflogs, and commit manipulation.

Instructions:

• These questions cover advanced Git concepts.
• Select the correct commands and concepts.
• Good luck!

#

Which command uses a binary search to find the commit that introduced a bug?

git bisect

git search

git debug

git find

git bisect uses a binary search algorithm to find which commit in your project's history introduced a bug.

#

Which command applies a specific commit from one branch to another?

git cherry-pick

git pick

git apply-commit

git transplant

git cherry-pick applies the changes introduced by some existing commits.

#

What does git reflog do?

Shows a log of all reference updates (HEAD changes)

Shows the remote log

Shows the commit history of a file

Shows the stash history only

Reflogs record when the tips of branches and HEAD were updated. It is essential for recovering lost commits.

#

Which command allows you to interactively squash, edit, or reorder commits?

git rebase -i

git commit --squash

git merge --interactive

git rewrite

git rebase -i (interactive) launches an editor to modify the commit history.

#

What happens generally in a 'detached HEAD' state?

HEAD points directly to a commit hash, not a branch reference.

The repository is corrupted.

You cannot make new commits.

You are on the master branch.

Authentication to check out a specific commit detach HEAD. New commits will not belong to any branch and can be easily lost if you switch away.

#

Which plumbing command displays the content of a Git object?

git cat-file -p

git show-object

git view-object

git object-cat

git cat-file -p pretty-prints the content of an object (blob, tree, commit, or tag).

#

What feature allows you to manage multiple working trees attached to the same repository?

git worktree

git submodule

git subtree

git multitree

git worktree allows you to have multiple branches checked out at different paths simultaneously.

#

What does git rerere stand for?

Reuse Requested Resolution

Replay Remote Repository

Rewrite Recursive Refs

Restore References Repeatedly

git rerere stands for "Reuse Recorded Resolution". It remembers how you resolved a conflict so it can resolve it automatically next time.

#

Which hook is triggered before a commit message is entered?

pre-commit

commit-msg

post-commit

prepare-commit-msg

The pre-commit hook is run first, before you even type a message. It's often used for linting.

#

Which command is used to permanently rewrite history to remove a sensitive file from all commits?

git filter-repo (or filter-branch)

git rebase

git clean -f

git rm --cached

git filter-repo (the modern successor to filter-branch) is used to rewrite history on a large scale.

#

What are the four main types of Git objects?

blob, tree, commit, tag

file, folder, change, tag

blob, directory, snapshot, ref

content, tree, head, tag

Git stores data as Blobs (files), Trees (directories), Commits (snapshots), and Tags.

#

Which command cleans up unnecessary files and optimizes the local repository?

git gc

git clean

git optimize

git prune

git gc (garbage collect) cleans up loose objects and packs them into packfiles.

#

How do you transplant a range of commits from one branch to another base, omitting the original base?

git rebase --onto

git rebase --move

git cherry-pick --range

git transplant

git rebase --onto newbase oldbase helps transplant a sub-branch to a new parent.

#

Which command finds the most recent tag reachable from a commit?

git describe

git tag --latest

git show-ref

git name-rev

git describe returns a human-readable name based on the nearest tag.

#

Where is the Git "Index" stored?

.git/index

.git/staging

.git/objects

.git/refs

The index is a binary file stored at .git/index.

#

What distinguishes a "Bare" repository?

It has no working directory.

It has no commits.

It has no branches.

It is read-only.

A bare repository contains only the .git contents (objects, refs) and no checkout of the files. Used for central servers.

#

Which command automates the bisect process using a script?

git bisect run

git bisect auto

git bisect script

git auto-debug

git bisect run <cmd> automatically runs the bisect process based on the exit code of cmd.

#

Which command creates a specific stash without adding it to the stash list (reflog)?

git stash create

git stash make

git stash new

git stash store

git stash create creates the stash commit object and returns the hash, but doesn't update refs.

#

What Git concept allows you to include another Git repository as a folder within your project?

Submodules

Subtrees

Subfolders

Nested Git

Submodules point to a specific commit in another repository. (Subtree is a strategy, but Submodule is the explicit reference feature).

#

Which low-level command resolves a reference to a SHA-1 hash?

git rev-parse

git resolve

git hash-object

git show-ref

git rev-parse is an ancillary plumbing command used to manipulate and validate parameters and refs.

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