Git

Question 1

What is Git?

Answer 1

Git is a distributed version control system designed to handle projects of all sizes efficiently.

Question 2

How does Git differ from SVN?

Answer 2

Git is distributed, every dev’s copy is a full-fledged repository, unlike SVN’s single repository approach.

Question 3

What is a ‘commit’ in Git?

Answer 3

A commit in Git is a snapshot of your repository’s history at a specific point, containing changes and a message.

Question 4

Explain ‘branching’ in Git.

Answer 4

Branching lets developers diverge from the main code base for new features or fixes without affecting the main line.

Question 5

What is a ‘merge’ in Git?

Answer 5

Merging is integrating changes from one branch into another in Git.

Question 6

Define ‘rebase’ in Git.

Answer 6

Rebase is a method of moving a series of commits to a new base commit.

Question 7

What is a ‘pull request’?

Answer 7

A pull request is a method of submitting contributions to a project, requesting the maintainer to pull your changes.

Question 8

Describe ‘forking’ a repo.

Answer 8

Forking a repo involves making a personal copy of someone else’s project to work on it separately.

Question 9

What is a ‘conflict’ in Git?

Answer 9

A conflict arises in Git when two branches have edits in the same line or one branch deleted a file that another modified.

Question 10

How do you resolve a merge conflict in Git?

Answer 10

To resolve a merge conflict in Git, manually edit the files, then mark them as resolved and complete the merge.

Question 11

Explain the concept of ‘blame’ in Git.

Answer 11

git blame shows who last modified each line of a file.

Question 12

What is a ‘bare’ repository in Git?

Answer 12

A bare repository in Git is a repository that does not contain a working directory.

Question 13

How do you rename a local Git branch?

Answer 13

Use git branch -m to rename a branch.

Question 14

What does git push do?

Answer 14

git push uploads local repository content to a remote repository.

Question 15

Explain ‘fast-forward’ merge in Git.

Answer 15

A fast-forward merge is where the target branch’s tip is advanced to the source branch’s tip.

Question 16

How do you create a tag in Git?

Answer 16

Use git tag to create a new tag.

Question 17

What is a ‘detached HEAD’ in Git?

Answer 17

Detached HEAD means you are currently checking out a commit rather than a branch.

Question 18

Explain the use of git show.

Answer 18

git show is used to display various types of objects in Git.

Question 19

What is ‘origin’ in Git?

Answer 19

Origin is the default upstream repository in Git.

Question 20

How do you find a commit where a specific change was introduced?

Answer 20

Use git bisect to find the commit that introduced a bug.

Question 21

Explain the use of git submodule.

Answer 21

git submodule allows you to keep a Git repository as a subdirectory of another Git repository.

Question 22

What is git archive?

Answer 22

git archive is used to create an archive of the files from a named tree.

Question 23

How do you amend a commit in Git?

Answer 23

Use git commit --amend to amend the most recent commit.

Question 24

What is the use of git grep?

Answer 24

git grep is used to search for phrases and words in the Git repository.

Question 25

Explain the use of git blame -w.

Answer 25

git blame -w ignores whitespace when determining the author of a line.

Question 26

How do you list all the remote repositories configured?

Answer 26

Use git remote -v to list all configured remote repositories.

Question 27

What is git gc?

Answer 27

git gc is a housekeeping command that cleans up unnecessary files and optimizes the local repository.

Question 28

Explain the concept of ‘hooks’ in Git.

Answer 28

Hooks in Git are scripts that run automatically every time a particular event occurs in a Git repository.

Question 29

How do you list all tags in Git?

Answer 29

Use git tag to list all tags.

Question 30

What is git ls-tree?

Answer 30

git ls-tree lists the contents of a tree object, including blobs and subtrees.