INSTALLATION Q & A - 1

INSTALLATION  INTERVIEW QUESTIONS AND ANSWERS

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1..What is Linux

Linux is, in simplest terms, an operating system. It is the software on a computer that enables applications and the computer operator to access the devices on the computer to perform desired functions. The operating system (OS) relays instructions from an application to, for instance, the computer's processor. The processor performs the instructed task, then sends the results back to the application via the operating system.

2..What is the difference between  unix and linux?

Unix originally began as a propriety operating system from Bell Laboratories, which later on spawned into different commercial versions. On the other hand, Linux is free, open source and intended as a non-propriety operating system for the masses.

3..What you mean by  the system administration?

The Linux system administrator is the person who has “root”      access, which is to say the one who is the system’s “super user.”

4..What is bash?

Bash (Bourne Again Shell ) is the free version of the Bourne shell distributed with Linux and GNU operating systems. Bash is similar to the original, but has added features such as command line editing.

5..What is LILO?

LILO stands for Linux Loader. LILO is Linux's boot loader which is used to boot up Linux. It can also be used to dual-boot or multi-boot different operating systems.

8..What is the difference between  BASH and DOS?

A..BASH commands are case sensitive while DOS commands are not;

B..under BASH, / character is a directory separator and \ acts as an escape character. Under DOS, / serves as a command argument delimiter and \ is the directory separator

C..DOS follows a convention in naming files, which is 8 character file name followed by a dot and 3 character for the extension. BASH follows no such convention.

7..What is the use of root user account?

The superuser is a special user account used for system administration. Depending on the operating system (OS), the actual name of this account might   be  root,administrator, admin or supervisor. In some cases the actual name is not significant but is an attribute of the user, and on Unix-like systems the user with an UID of zero is the superuser, regardless of the name of that account

8..What is CLI?

Command line interface (CLI) is a text-based interface that is used to operate software and operating systems while allowing the user to respond to visual prompts by typing single commands into the interface and receiving a reply in the same way.

CLI is quite different from the graphical user interface (GUI) that is presently being used in the latest operating systems.

9..How  can you switch to command  line  from GUI?

Ctrl+Alt+F1 switch combination

10..How  can you switch from  command  line to  GUI?

Ctrl+Alt+F7 switch combination