Saturday, 12 October 2019

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Git Interview Questions Answers 2020 | Latest Questions Answers

It is probably safe to assume that Git has become an essential part of any company that aims to maintain the DevOps philosophy. Even if you are not interested in software engineering, Git is probably the most useful tool when it comes to project management, it is a key component for teamwork and goal achievement. Most project-based companies require their employees to know how to use the various tools that Git provides. In this Git tutorial, we will show you the most frequently asked interview questions, these will help you get a job in a company that recognizes the incredible Git tools!

In this Git tutorial, we will talk about the most basic interview questions and after we are both in the same tune, we will move on to the more advanced versions of those questions. Although Git is an amazing tool, it has a fairly steep learning curve, so put on your thinking hat and let's get started!

Table of Contents

1. Git Introduction

  • 1.1 Question 1: What is Git?
  • 1.2 Question 2: What is the difference between a “simple repository” and a “working directory”?
  • 1.3 Question 3: What is the difference between a “fork” and a “branch”?
  • 1.4 Question 4: You have created a confirmation and sent it, it is now public. However, you have noticed that there are still things that must be changed. Can you do it at the confirmation stage? and if so, how?
  • 1.5 Question 5: What is cherry picking?
  • 1.6 Question 6: What is a stash?
  • 1.7 Question 7: How do you resolve “conflicts” in Git?
  • 1.8 Question 8: What is the language used in Git?
  • 1.9 Question 9: What is an “extraction request”?
  • 1.10 Question 10: What is the most efficient way to find a bad confirmation?

2. Advanced Git Interview Questions

  • 2.1 Question 1: What is a "header"?
  • 2.2 Question 2: What is the “Git CONFIG” command used for?
  • 2.3 Question 3: Can broken confirmations be fixed?
  • 2.4 Question 4: What is the difference between “get” and “extract”?

3. Conclusions

Introduction
To begin properly with this Git tutorial, we will cover some of the basic Git commands along with their respective interview questions. Many people tend not to give much importance to the basics when preparing for a job interview. However, during this tutorial Git This should not be the case! I guess this is really obvious when you start learning what Git is and how to use it. However, even if you are already an experienced Git user, you should not make the mistake of ignoring the basic information, why?

You see, when people study interview questions through a Git tutorial, they generally don't think at the time of the interview. Of course, you can imagine the situation and the type of questions you will have to answer, but a very important aspect that many do not recognize is that, (Most of the time) there will be a lot of stress involved. Stress leads to panic, which in turn can make you forget even the most basic information about Git, especially if you haven't practiced it before.

Therefore, now that in this Git tutorial we have established the importance of basic interview questions, let's turn to them.

Question 1: What is Git?
Let's face it, you probably imagined that this question would appear in this Git tutorial.

It's hard to imagine that your potential employers ask you a first question on a completely different topic. With this question, you will provide an overview of your level of knowledge, and your employers will know what to expect during the rest of the interview.

Therefore, what is Git?

Git is a piece of technology designed to track and record changes and alterations in any type of computer files, especially when it comes to those files that are used by more than one or two people (for example, a company ). In other words, companies use Git to manage the flow of their work and track the progress of several different projects. The technology is mainly used in software engineering, but many companies around the world, which have nothing to do with the software, have incorporated Git into their workflow. It is especially popular (and even important) for developers and programmers, in addition to being one of the most essential tools for companies that strive to achieve and maintain the DevOps philosophy .

Question 2: What is the difference between a "simple repository" and a "working directory"?
Very popular during Git interview questions, comparisons are something you are likely to find in your job interview. The best way to approach them is to keep your answers short and to the point, but at the same time try to show that you have a detailed knowledge of what you are talking about.

A simple repository , as the name implies, does not have any work files used in Git. There are no subdirectories or version control, just a simple template. On the other hand, a working directory contains all the previous files (including its history), subdirectories, etc. You could say that both areas are the opposite of each other.

Question 3: What is the difference between a “fork” and a “branch”?
One of the most common interview questions about Git, your potential employers will probably ask you to compare the two concepts or perhaps even describe one of them.

The concept of “ fork ” is not unique or exclusive to Git. You can find forks in many areas. A good example of this would be the cryptocurrency bifurcations . However, at Git, the forks are much less controversial, since the technology is used in stable, " indoor " scenarios .

In Git, a fork, is a copy of a repository that is completely separate from the original . However, a branch , it is something that is used to change some parts of a program , (from the perspective of development) and then merge the changes to the core.

A good way to see them would be that, although a fork is like manipulating the exterior of a car, a branch is like changing the tires.

Question 4: You have created a confirmation and sent it, it is now public. However, you have noticed that there are still things that must be changed. Can you do it at the confirmation stage? and if so, how?
Probably one of the most popular interview questions, are those that require you to imagine a certain situation or scenario and then ask the interviewers how you would deal with it. Employers really like these types of interview questions, since they are generally based on situations that they themselves have experienced.

To answer that question, yes , changes can still be made, even after confirmation. The way to do it is by issuing one of the git commands called revert . Actually, it is one of the most common git commands and many developers use it daily.

The command will act as a "patch" for the confirmation to be changed. In this way, even if you have forgotten to change something before implementing the confirmation in the live version, you can still alter and fix things later.

Question 5: What is cherry picking?
This could be one of the most difficult interview questions, since not many people really investigate it. As a term, cherry-picking is all that is commonly used among developers (at least compared to other basic terms such as "branch" or "confirmation").

Cherry-picking , occurs when you decide to choose some type of confirmation from a branch based on Git and then apply its characteristics to another branch. Now, you may ask, why is this called cherry picking? Simple, most other Git commands that rely on confirmation transfers are designed to simultaneously copy multiple confirmations. With cherry-picking, you can choose a confirmation and apply it on another branch.

Question 6: What is a stash?
In Git, stashes are some of the most loved features by both developers and managers. The way they work is that you can basically store everything you are working on in a stash and quickly jump to another part of the project, without fear of losing any files. The stash acts as a storage unit, save your project and all its features, this allows you to return after a while and continue working from where you left off.

Question 7: How do you resolve “conflicts” in Git?
This is a particularly interesting interview question, because it acts as a double question . In order to respond appropriately, you must first know that it is a conflict.

If you are working on a confirmation and finally decide to merge it, Git will verify if there are duplicate changes in the confirmation that is being carried out. In case such duplicates are found, Git will issue a conflict; This occurs, because Git cannot determine which changes are correct and which must be discarded. If it is overlooked, this could affect your project in a negative way, this makes Git's decision to issue a conflict particularly good.

There are Git commands that are used to resolve a conflict ( such as git add and git commit ). Once issued, Git will organize the confirmations and finish the work.

Question 8: What is the language used in Git?
This is one of those interview questions that you will probably have to answer, so it is a good idea to prepare with this Git tutorial.

Simply put, Git uses the " C " language . Therefore, you could add the "Why?" Actually, it's quite simple, the "C" language allows Git to be exceptionally fast, something that would be very difficult to achieve with some of the most advanced programming languages.

Question 9: What is an “extraction request”?
You can be sure that this will be a term that you will listen to and use daily.

While a branch is a different version of the code, an extraction request is when you take a repository and then create your own branch. After this, we made some changes and merged that branch into the main project. For obvious reasons, extraction requests must be approved by other members related to the project.

Question 10: What is the most efficient way to find a bad confirmation?
Although you could check each of the confirmations and try to find the one that is causing problems, nobody really does. This is because there is a command that allows you to sort confirmations quickly and easily, which makes the search process much faster and more fluid.


Git Interview Questions - Advanced
Now that in this Git tutorial we have covered some of the basic interview questions, we can move on to the more advanced concepts. I will give you some examples of advanced interview questions. However, keep in mind that there is a wide variety of questions you might encounter. Although it would be almost impossible to cover in this tutorial Git, all possible versions of these questions. However, the ones you'll find below will give you a pretty clear idea of ​​what to expect during a job interview.

Question 1: What is a "header"?
Although it is not used as commonly as some of the other terms mentioned in this tutorial Git. A header is used to refer to the object of a confirmation. The headings are in repositories and each one of them has a predetermined heading called “Master”. In addition to the default header, a repository can have multiple different headers.

Question 2: What is the “Git CONFIG” command used for?
The command git config can be used to configure most of the options you will need when using Git. Whether it's user information or the way the repository works, this command becomes a very convenient configuration method.

Question 3: Can broken confirmations be fixed?
Yes, in fact, you can do it. The way to do it is by issuing the command git commit - amend. This command will find the broken confirmation and restore its functionality, eliminating the error message in the process.

Question 4: What is the difference between “get” and “extract”?
When you " extract " data, it is downloaded and then immediately combined with your current work files. Instead, " getting " data is the way to go if you want to download it, but without merging the files.

Conclusions
Therefore, we have reached the end of this "Tutorial Git on interview questions" . At this point, we have covered a large part of the possible basic questions, as well as some of the most popular advanced interview questions.
Try not to stress yourself and devote all your attention to studying Git. During the interview, relax and try to answer the vast majority of the questions clearly and directly. Try to expand your answers whenever you think necessary, your potential employers will value it.

I hope you found this tutorial Git useful and I wish you the best of luck during your job interview!

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