Question 1

In 1973, the developers of UNIX revised it by writing it in assembly language.

Accepted Answer

In 1973, the developers of UNIX revised it by rewriting it in the C programming language, not assembly language, to increase its portability across different computer systems.

Question 2

Linux source code is available free of cost, and some Linux distributions (distros) are also free.

Accepted Answer

Linux is an open-source operating system, meaning its source code is freely available for anyone to view, modify, and distribute. Many Linux distributions, such as Ubuntu, Fedora, and Debian, are also available free of charge.

Question 3

A true command line interface (Terminal mode using tty1 through tty6) never goes into screen-saver mode.

Accepted Answer

A true command line interface (Terminal mode using tty1 through tty6) never goes into screen-saver mode because it is not a graphical user interface (GUI).

Question 4

UNIX and Linux systems use Trivial File Transfer Protocol, or TFTP, to start diskless computers.

Accepted Answer

TFTP is used in UNIX and Linux systems for bootstrapping diskless computers, allowing them to download the necessary boot files over a network.

Question 5

You cannot use the mutt package in conjunction with PGP.

Accepted Answer

Mutt, a text-based email client, can be configured to work with PGP (Pretty Good Privacy) for encrypting and signing emails, enhancing the security of email communication.

Question 6

Linux was derived from UNIX by an engineering student from Finland named ____ in 1991.
A)Ken Thompson
B)Steve Jobs
C)Linus Torvalds
D)Dennis Ritchie

Accepted Answer

Linus Torvalds, a Finnish student, created Linux in 1991 as a free operating system kernel derived from UNIX.

Question 7

The first version of UNIX was written in ____ language.
A)C
B)Fortran
C)Lisp
D)assembly

Accepted Answer

The first version of UNIX was written in assembly language. Assembly language is a low-level programming language that is closely related to machine code. It was used for the initial development of UNIX at Bell Labs in the late 1960s and early 1970s.

Question 8

To delete an account in Linux, use the following syntax:
A)eraseuser account_name
B)userdel account_name
C)del account_name
D)accountdel account_name

Accepted Answer

The correct command to delete a user account in Linux is "userdel account_name". This command is used by administrators to remove user accounts from the system.

Question 9

The ____ utility can be used for finding strings within files.
A)grep
B)locate
C)find
D)subexpr

Accepted Answer

The grep utility is specifically designed for searching plain-text data sets for lines that match a regular expression, making it the correct tool for finding strings within files.

Question 10

The r utilities use an insecure mechanism called ____.
A)rsh
B)rlogin
C)rallow
D)rhosts

Accepted Answer

rlogin and rsh are insecure remote login protocols that send passwords in clear text. rhosts is a file that allows hosts to log in without a password. rallow is a program that allows users to grant access to their accounts to other users.

Question 11

____________________ is the default and unchanging administrative user for UNIX/Linux systems.

Accepted Answer

The answer of ____________________ is the default and unchanging administrative...

Question 12

The ____________________ command helps users of a Linux operating system temporarily switch the current privileges available to those of the root account.

Accepted Answer

The answer of The ____________________ command helps users of a...

Question 13

Linux and UNIX-based operating systems use the sendmail daemon to send e-mail messages by employing ___________________________________.

Accepted Answer

The answer of Linux and UNIX-based operating systems use the...

Question 14

The ____________________ package allows system administrators to grant some or all root privileges to users listed in the sudoers text file.

Accepted Answer

The answer of The ____________________ package allows system administrators to...

Question 15

The wu-ftpd server allocates memory by using a function called ____________________.

Accepted Answer

The answer of The wu-ftpd server allocates memory by using...

Question 16

What are the basic exploits of a Linux system?

Accepted Answer

The answer of What are the basic exploits of a...

Question 17

What can go wrong if every user of a Linux system has unlimited access to resources?

Accepted Answer

The answer of What can go wrong if every user...

Question 18

What are some of the Telnet service vulnerabilities?

Accepted Answer

The answer of What are some of the Telnet service...

Quiz 17: Unix/Linux Vulnerabilities