ITN 170 Final Study Guide

A limited user within Linux is represented by an ___________.

$

Which one of the following Linux wildcard characters will search for multiple characters in a string of text?

*

Which option of the kill command will shut-down the system?

-9

Which one of the following represents the Linux Root Directory?

/

Which script would the daemon execute for default run level 5?

/etc/rc.d.rc5.d script

Which run level shuts down the system?

0

Which of the following is the highest value that can be set for the nice value which would result in a greater chance of a lower priority?

19

Which Run Level is used in Multi User Mode with networking?

3

Which line of code will back up the home directory of a user named John on a monthly basis when entered into the Cron table?

@monthly /home/john tape-backup

Linux Unified Key Setup (LUKS): used to encrypt entire filesystems using ___________ encryption

AES

____________ is open source software that was designed to create web servers.

Apache

The default shell for Linux operating systems is _____________.

Bash

Which keystroke will pause a foreground process?

Ctrl+Z

Which of the following is a common DHCP daemon?

DHCP daemon (dhcpd)

What type of encryption is used on a Linux system to encrypt specific files?

GPG

Linux may use a Master Boot Record or a ____________.

Guid Partition Table

______________ servers obtain time information from multiple sources and use algorithm to determine most reliable time information

NTP

Which of the following is an example of a physical access attack?

Planting a Trojan Horse from a website?

What takes place first in the boot process?

Power On Self Test

Which of the following are best practices when securing a Linux system?

Reducing the number of network services Limiting system and client access Changing default ports

Which one of the following services is desirable when sharing files on a network containing Windows computers?

Samba

What are the two methods to restore permissions to a directory?

The Character and Number Method

Which of the following is not true of Linux?

The Unix OS was copied from Microsoft.

The Basic Input/Output system has been replaced by the _________________.

UEFI (Unified Extensible Firmware Interface)

A(n) _________________ path starts at the root directory.

absolute

The _______ file stores user commands.

bin

Which linux command is used to display the contents of a file?

cat

Which command would apply the read permission of the london file to the user only?

chmod u+r london

Which command is used to change the ownership of a file or directory?

chown

The Linux shell is defined as the ___________.

command interpreter

Which of the following commands will show the user cron jobs that have been created for the currently logged in user?

crontab -l

Which command compares the contents of 2 files?

diff

Which command is used to query records that exist on a specific DNS server?

dig

The _________ file is where configuration files and directories are located

etc

Unless otherwise specified, the init daemon enters the default runlevel indicated in the _________.

etc/inittab/file

The default filesystem for current Linux operating systems is ____________,

ext4

Which command moves a background process to the foreground?

fg

The ___________command: does not interpret any regular expressions and returns results much faster,

fgrep

Which command will show the available memory on the system?

free

Which file contains the file system table?

fstab

Which Linux command is used to search for a string of text?

grep

Which command will display the first ten lines of a file?

head

Which directory contains user profiles?

home

Which command changes the run level on a system?

init

Which of the following is currently the primary firewall for Linux?

iptables

Which of the following commands can be used to terminate a process by the process name?

killall, pskill

What is the correct syntax used to create a hard link between file1 and file2?

ln file1 file2

Which command will display hidden files?

ls -a

Which of the commands will display the long listing of files?

ls -l

Which of the following commands can be used to show the block devices, including their major and minor numbers, on a system which are located in the /sys/block directory?

lsblk

Which command will access the help files?

man

Which command displays output in a scrollable manner?

more

Which command makes a file system available?

mount

Which Linux command is used to move files and directories?

mv

The correct format for Linux commands is ____________.

names, options, arguments

What is an alternative to the vi editor which is built into Linux?

nano editor

Which command will display the processes running under the user currently logged into the system?

ps

Which command displays the entire list of processes across all terminals including daemons?

ps-e

Which command will display the working directory?

pwd

Which command is used to reassign a priority to a process?

renice

The __________ user within Linux is the equivalent of a Windows administrator.

root

Which Linux command will show the properties of a file?

stat

A______________ link is only a shortcut to a file.

symbolic

Which Unix/Linux command will display all processes that are running on the computer?

top

Which Linux command is used to create a file?

touch

Which Linux command will filter out duplicate lines?

uniq

What is the Linux default editor?

vi

Which Linux command can be utilized to display your current login?

whoami

Which command exits the default text editor and saves changes?

wq

Which command (symbol) takes the output of one command and channels it into the input of another?

| (Pipe)