SL_Part1

Question 1

What is a repository

Answer 1

It is part of the VCS (Version Control System)

• Store your files and the different versions of the projects that you are working on.
• Serves as a means to track the history of the versions and files that you put on the repo.

Question 2

What is the difference between a client and a server

Answer 2

Client is a program that makes requests to the server. A server is a program that fulfils those requests

Question 3

What is a Git server

Answer 3

A server that is set up to host and manage repos

Question 4

What is the difference between Git and GitHub

Answer 4

-Git is a version control tool. Its a software that can be downloaded locally on the system and can be used offline.
-GitHub is used to store, manage and share Git repos on the cloud

Question 5

Can you only use Git via GitHub

Answer 5

No, you can use other online services (BitTorrent, AWS), with an in-house server, or on your local computer without any server at all

Question 6

What is a Git client

Answer 6

A software application, such as GitHub desktop, that allows you to interact with a Git repo

Question 7

what is the difference between a program and software

Answer 7

-Program: A piece of code or a set of instructions used to perform a task
-software: A collection(set) of programs and the task which it has to perform is more complex than that of a program.

Question 7

What are some of the Git commands and what are they used for

Answer 7

Create repo: git init (initialise)

Make changes: add, commit, status

Sync repos: push, pull, add origin

Parallel development: branch, merge, rebase.

Question 8

git config –global user.username

Answer 8

Links Git to GitHub

This is not used to change or set your global Git username. It is used to display the current username you are using, which is set in your Git configuration.

Question 9

git remote add origin

Answer 9

This command is used to set up a connection (or “remote”) between your local repo to your remote repo like GitHub. (The remote repo is on a server)

Question 10

git push origin master

Answer 10

This command pushes local file to the remote repo. (This will push it to the master branch)

Question 11

What is the difference between Git and GitHub when it comes to the command line

Answer 11

Git is operated using the command line whereas GitHub uses Git for version control. And uses a GUI which makes it easier to interact with repos, especially for those who prefer not to use the command line.

Question 12

What is the relationship between GitHub and HTTPS

Answer 12

Remember HTTPS is a protocol used for communication over the internet.
- So GitHub uses HTTPS for user authentication in order to interact with GitHub repos

Question 13

Why is HTTPS used instead of HTTP

Answer 13

HTTPS is a more secure version of HTTP because it uses SSL to encrypt information sent between the client and the server.

Question 14

What is SSL

Answer 14

Secure Sockets Layer

• A security protocol that encrypts the data sent between the client and the server.

Question 15

How is SSH used for communication

Answer 15

SSH (Secure Shell)

• Generates a pair of keys on your server, a private key and a public key
• You add your public key is shared with the party you want to communicate with securely, ensuring that your machine can be trusted.
• Private key is kept locally (only you can access it). When you want to interact with a remote server (e.g. pushing or pulling) your local Git uses the private key to authenticate (prove identity) of your machine.