Module 3: Working In Linux

Question 1

What do system administrators do?

Answer 1

Manager servers, assist users with configuration issues, recommend new software and update documentation

Question 2

What is CLI?

Answer 2

Command line interface
Simple text input system for entering anything from single word commands to complicated scripts

Question 3

What are the two ways of accessing the command line?

Answer 3

GUI BASED TERMINAL
Virtual terminal

Question 4

What is a GUI terminal?

Answer 4

A program with the GUI environment that emulates a terminal window. Can be accessed via the menu systems or searching with the search bar

Question 5

What is a virtual terminal?

Answer 5

Can be run at same time as GUI but requires user to log in via the virtual terminal before they can execute commands

Question 6

What does the kernel do?

Answer 6

It’s like an air traffic controller
Decides which program gets which block of memory, starts and kills applications and handles the display of text or graphics

Question 7

What do applications do?

Answer 7

Planes under control of kernel
Make request to the kernel and receive resources such as memory, CPU and disk

Question 8

What is a Linux server applications?

Answer 8

Software that has no direct interaction with the monitor and keyboard of the machine it runs on

Question 9

What are Linux desktop applications

Answer 9

Web browser, text editor, music player and more

Question 10

What are Linux tools?

Answer 10

Loose category of software that makes it easier to manager computer system

Question 11

What is a web server?

Answer 11

Host content for web pages which are viewed by the browser using the HTTP OR HTTPS

Question 12

What is Apache?

Answer 12

The dominant web server used today

Question 13

What is Apache HTTPD?

Answer 13

The server application program that serves web pages which requests

Question 14

What is the ONCLOUD project?

Answer 14

Launched in 2010 to provide software to store, sync and share data from private cloud servers
Open source file hosting service

Question 15

What is the NEXTCLOUD project?

Answer 15

Forked from OWNCLOUD in 2016

Question 17

What is MariaDB?

Answer 17

Community developed forked of the mySQL relational database management system. One of many database servers used for web development

Question 18

What does a database do?

Answer 18

Stores information and allows for easy retrieval and querying

Question 19

Two examples of popular databases?

Answer 19

Firebird and postgresql

Question 20

What language is used for querying

Answer 20

SQL

Question 21

What is an MTA?

Answer 21

Mail transfer agent
Software that is used to send electronic messages to other systems

Question 22

What are the two most well known MTA?

Answer 22

Send mail
Postfix

Question 23

What is a MDA?

Answer 23

Mail delivery agent
Takes care of storing the email in the user’s mailbox

Question 24

What is POP/IMAP server

Answer 24

Post office protocol and internet message access protocol
Two communication protocols that let an email client running on your computer talk to a remote server to pick up the email

Question 25

What are two examples of POP/IMAP servers?

Answer 25

Dovecot CYRUS IMAP

Question 27

What is the best windows centric file sharing winner?

Answer 27

Samba

Question 28

What does Samba do?

Answer 28

It allows Linux to look and behaves like a windows machine so that It can share files and participate in a windows domain

Question 29

What is NETATALK

Answer 29

A project that lets a LINUX machine perform as as Apple McIntosh file server

Question 30

What is NFS

Answer 30

Network file system Native file sharing protocol of UNIX/LINUX

Question 31

What is the oldest network directory system?

Answer 31

DNS- domain name system

Question 32

What does DNS do?

Answer 32

It converts urls to an up address- unique identifier of a computer on the internet

Question 33

How do Linux users interact with a Linux system

Answer 33

Via shell. Shell accepts commands and pass those on to the Linux kernel for execution

Question 34

Most used shell?

Answer 34

Bash Bourne C shell

Question 35

What is thunder bird

Answer 35

A full featured open source desktop email client developed by the Mozilla

Question 36

What is GIMP?

Answer 36

An open source application which handles 2D image manipulation GNU Image manipulation program

Question 37

What is LibreOffice?

Answer 37

Open source office suite forked from Open Office. Includes tools that strive for compatibility with Microsoft Office in both features and file formats

Question 38

What are the two types of text editors

Answer 38

VIM and EMACS

Question 39

What does a package manager takes care of?

Answer 39

Takes care of keeping track of which files belongs to which package and even downloading updates from repositories

Question 40

What is dpkg?

Answer 40

The package management system used on Debian derived Linux distribution.

Question 41

What is apt-get?

Answer 41

A front end program for Debian packages management

Question 42

What is the Linux standard base?

Answer 42

A Linux foundation project that is designed to specify a set of standards that increase the compatibility between conforming Linux systems

Question 43

What is the standard package management system based on the Linux standard base?

Answer 43

RPM

Question 44

What does RPM do?

Answer 44

It makes sure that when a package ins installed that the system also installs any packages needed by that package to function correctly

Question 45

What does the RPM do?

Answer 45

Ensure that when a package is installed the system also installs any packages needed by that package to function correctly

Question 46

What back end tools is most commonly used for RPM package management?

Answer 46

Rpm command

Question 47

How to protect yourself?

Answer 47

Use a good unique password- 10 characters long Limit info you give to sites Check for updates Protect your computer from accepting incoming connections

Question 48

What is a firewall?

Answer 48

A device that filters network traffic, and Linux has one built in-

Question 49

What is HTTPS

Answer 49

Hypertext transfer protocol secure Used on web servers to ensure that data transmitted between user and online resources cannot be intercepted as it travels on the open internet

Question 50

What is VPN

Answer 50

Virtual private network Connect their remote servers and employees for many years Creates an encrypted channel of communication between the two systems so the data transmitted between them is scrambled by the algorithm only the systems know

Question 51

What is a cloud?

Answer 51

Computing resources from one or many data centers that can be accessed over the internet

Question 52

What are the three types of cloud

Answer 52

Public- general public Private- particular organizations Community- group of organizations with common goals or requirements Hybrid clouds- composed of two or more individual clouds each of which can be private community or public