You are going to succeed in your Git interview that is ahead of you. You will succeed because of having the right information to enable you achieve that. That information is nowhere but here in this article. It is in form of questions together with their answers and they are what you will face when you get to your interview. Listed below are top 20 Git interview questions with answers.
20 Git Interview Questions with Answers for Programmers
1. What is Git?
Answer: Git is a version control system for tracking changes in computer files and is used to help coordinate work among several people on a project while tracking progress over time. In other words, we can say it’s a tool that facilitates source code management in software development.
2. What is a Git repository?
Answer:
Git repository refers to a place where all the Git files are stored.
These files can either be stored on the local repository or on the
remote repository.
3. What are some of the few Git commands with their functions?
Answer:
- Git config - Configure the username and email address
- Git add - Add one or more files to the staging area
- Git diff - View the changes made to the file
- Git init - Initialize an empty Git repository
- Git commit - Commit changes to the head but not to the remote repository
Here is a big list of git commands:
4. What are the advantages of using Git?
Answer:
- Faster release cycles
- Easy team collaboration
- Widespread acceptance
- Maintains the integrity of source code
- Pull requests
5. How do you resolve conflicts in Git?
Answer: The following are the steps that will help you resolve conflicts in Git:
- Identify the files responsible for the conflicts.
- Implement the desired changes to the files
- Add the files using the git add command.
- The last step is to commit the changes in the file with the help of the git commit command.
6. How can you discover if a branch has already been merged or not?
Answer: There are two commands to determine these two different things.
- git branch --merged - Returns the list of branches that have been merged into the current branch.
- git branch --no-merged - Returns the list of branches that have not been merged.
7. What are the various Git repository hosting functions?
Answer:
- Github
- Gitlab
- Bitbucket
- SourceForge
- GitEnterprise
8. What is the difference between git pull and git fetch?
Answer:
Git pull command pulls new changes or commits from a particular branch
from your central repository and updates your target branch in your
local repository. On the other hand, git fetch is also used for the same
purpose but it works in a slightly different way.
When you perform a
git fetch, it pulls all new commits from the desired branch and stores
it in a new branch in your local repository. If you want to reflect
these changes in your target branch, git fetch must be followed with a
git merge. Your target branch will only be updated after merging the
target branch and fetched branch.
9. What does a commit object contain?
Answer: Commit object contains the following components:
- A set of files, representing the state of a project at a given point of time
- Reference to parent commit objects
- An SHA-1 name, a 40 character string that uniquely identifies the commit object
10. What is the difference between ‘git remote’ and ‘git clone’?
Answer:
‘git remote add’ creates an entry in your git config that specifies a
name for a particular URL whereas ‘git clone’ creates a new git
repository by copying an existing one located at the URL
11. What is SubGit?
Answer:
SubGit is a tool for SVN to Git migration. It can create a writable Git
mirror of a local or remote Subversion repository and use both
Subversion and Git as long as you like.
12. What language is used in Git?
Answer:
Git uses ‘C’ language. GIT is fast, and ‘C’ language makes this
possible by reducing the overhead of run times associated with
high-level languages.
13. What is the difference between reverting and resetting?
Answer:
- Git reset is a powerful command that is used to undo local changes to the state of a Git repository. Git reset operates on “The Three Trees of Git” which are, Commit History (HEAD), the Staging Index, and the Working Directory.
- Revert command in Git creates a new commit that undoes the changes from the previous commit. This command adds a new history to the project. It does not modify the existing history.
14. What are some of the most popular Git repository hosting functions?
Answer: Below is the list of Git repository hosting functions:
- Pikacode
- Assembla
- Visual Studio Online
- GitHub
- GitEnterprise
- Net
- Beanstalk
- CloudForge
- GitLab
- Planio
- Perforce
- Fog Creek Kiln
15. What are some of the best graphical GIT client for LINUX?
Answer: Some of the best GIT client for LINUX are:
- Git Cola
- Git-g
- Smart git
- Giggle
- Git GUI
16. What are some of the few Git repository hosting services?
Answer:
- Pikacode
- Visual Studio Online
- GitHub
- GitEnterprise
- SourceForge.net
17. What does ‘hooks’ comprise of in Git?
Answer:
This directory consists of shell scripts that are activated if you run
the corresponding Git commands. For example, git will try to execute
the post-commit script after you have run a commit.
18. What is the difference between Git and GitHub?
Answer:
Git is a version control system that is used in the management of the
source code history. GitHub, on the other hand, is a cloud-based hosting
service that is used in the management of Git repositories. GitHub is
designed to help in the better management of open-source projects.
19. What is the syntax for rebasing in Git?
Answer: The syntax for rebasing in Git is “git rebase [new-commit]”
20. What is the function of ‘git reset’?
Answer: The function of ‘Git Reset’ is to reset your index as well as the working directory to the state of your last commit.
That's all about the frequently asked Git interview questions and answers. Every programmer and software developer should know essential git concepts like remote repository, push, pull, fetch, squashing commits, rebase etc and those are the ones which are often asked during interviews.
In summary, the above-mentioned questions, are the most suitable ones because they are the ones that are frequently asked in Git interviews. You will find nothing strange when you enter the interview room and therefore you just have to relax and think about the questions with answers that you have gone through above. I wish you the best of luck in your forthcoming interview.
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