Linux Admin Final

Front 1

Open Source Software (OSS) is freely developed and continuously improved by a large community of software developers.

Back 1

True

Front 2

Commands indicate the name of a program to execute and are case sensitive.

Back 2

True

Front 3

Linux uses a logical directory tree to organize files into different folders.

Back 3

True

Front 4

It is acceptable to use shell metacharacters when naming files.

Back 4

False

Front 5

The rmdir command automatically removes a directory and all of its subdirectories and files.

Back 5

False

Front 6

There can be multiple device files per device.

Back 6

False

Front 7

You can use a small bootable Linux kernel to fix problems related to the following: the boot loader;filesystems and partitions; the configuration file; and drivers.

Back 7

True

Front 8

You are limited to using one pipe | metacharacter on the command line to pipe information from onecommand to another command.

Back 8

False

Front 9

Each process can start an unlimited number of other processes.

Back 9

True

Front 10

The ps command is the only command that can view process information.

Back 10

False

Front 11

The killall command uses the PID to kill a process.

Back 11

False

Front 12

After a process has been started, you can change its priority by using the renice command.

Back 12

True

Front 13

If you want to enable a printer, you must specify the printer name to the cupsenable command.

Back 13

True

Front 14

CUPS contains versions of the lpr, lpc, lpq, and lprm commands.

Back 14

True

Front 15

A user can only be a member of one group.

Back 15

False

Front 16

The tar utility cannot back up device files or files with filenames longer than 255 characters.

Back 16

True

Front 17

It is good form to read the Makefile after you run the configure script.

Back 17

True

Front 18

Home users can use a LAN, but not a WAN.

Back 18

False

Front 19

Class D addresses are used for multicasting.

Back 19

True

Front 20

A route table is a list of TCP/IP networks that is stored in system memory.

Back 20

True

Front 21

The use of NFS is less common than the use of FTP to transfer files on public networks.

Back 21

True

Front 22

Performing regular system backups and identifying potential problem areas are examples of reactive maintenance.

Back 22

False

Front 23

If the / filesystem becomes corrupted, the system is unstable and must be turned off.

Back 23

True

Front 24

Performance problems are caused by hardware, not software.

Back 24

False

Front 25

A(n) ____ is a piece of software that tells the operating system how to use a specific hardware device.

Back 25

device driver

Front 26

The ____ indicates the stability of a Linux kernel.

Back 26

major number

Front 27

The concept of ____ enables software developers to read other developers’ source code, modify that source code to make the software better, and redistribute that source code to other developers who might improve it further.

Back 27

Open Source Software

Front 28

The ____ stipulates that the source code of any software published under its license must be freely available.

Back 28

GNU General Public License

Front 29

The core component of the GUI in Linux is referred to as ____.

Back 29

X Windows

Front 30

Companies and institutions using computers to perform extraordinarily large calculations that would be unsuitable for most computers would employ a(n) ____.

Back 30

supercomputer

Front 31

____ is the most common method of installing Linux.

Back 31

Installation from a DVD

Front 32

The shell that is used by default in Linux is the ____ shell.

Back 32

BASH

Front 33

____ are specific letters that start with a dash (“-“).

Back 33

Options

Front 34

The command that displays the calendar for the current month is ____.

Back 34

cal

Front 35

The ____ metacharacter indicates background command execution.

Back 35

&

Front 36

____ is the metacharacter for command termination.

Back 36

;

Front 37

The ____ command will confirm the system directory that you are currently in.

Back 37

pwd

Front 38

To move from the /home/joe/test/data to the /home/joe directory, use the ____ command.

Back 38

cd ../..

Front 39

The ____ regular expression metacharacter matches 0 or more occurrences of the previous character.

Back 39

*

Front 40

In the FHS, the ____ directory contains most system commands and utilities.

Back 40

/usr

Front 41

Copying a file can be accomplished using the ____ command.

Back 41

cp

Front 42

The fastest method to search for files in the Linux directory tree is to use the ____ command.

Back 42

locate

Front 43

To create a hard link, you must use the ____ command.

Back 43

ln

Front 44

The section of an inode that stores permissions is called the ____ of the file.

Back 44

mode

Front 45

Devices that transfer data in a character-by-character fashion are referred to as ____ devices.

Back 45

character

Front 46

If you do not know the type, major, or minor number of a device, you can use the ____ command to re-create the device based on the common name.

Back 46

mknod

Front 47

The ____ filesystem is used by software programs that write to a CD-RW or DVD-RW drive.

Back 47

udf

Front 48

Data is read off of hard disks in concentric circles called ____.

Back 48

tracks

Front 49

To ensure that Linux has detected the correct amount of RAM in the system after installation, you can view the contents of the ____ file.

Back 49

/proc/meminfo

Front 50

The ____ file in the /proc directory contains a list of memory address ranges reserved for device use.

Back 50

ioports

Front 51

The file descriptor stderr is represented by the number ____.

Back 51

2

Front 52

You can use the BASH shell to redirect standard output and standard error from the terminal screen to a file on the filesystem using the ____ shell metacharacter followed by the absolute or relative pathname of the file.

Back 52

>

Front 53

You can redirect a file to the standard input of a command using the ____ metacharacter.

Back 53

<

Front 54

You can send the standard output of one command to another command as standard input using the ____ shell metacharacter.

Back 54

|

Front 55

The ____ command counts the number of lines, words, and characters in a file.

Back 55

wc

Front 56

The ____ command can be used to extract, manipulate, and format text using pattern-action statements.

Back 56

awk

Front 57

To see a list of the environment variables and their current values on a system, you can use the ____command.

Back 57

set

Front 58

In the /etc/lilo.conf file, the ____ keyword specifies the absolute pathname to the Linux kernel.

Back 58

image=

Front 59

In the /etc/lilo.conf file, the ____ keyword specifies the file that contains the physical layout of the disk drive.

Back 59

install=

Front 60

In Linux, runlevel ____ is also known as multiuser mode.

Back 60

2

Front 61

After configuring X Windows, you can fine-tune the vsync and hsync of the video card using the ____ utility within the desktop environment.

Back 61

xvidtune

Front 62

In the output of the ps -l command, the ____ column is the most valuable to systems administrators because it indicates what the process is currently doing.

Back 62

process state

Front 63

The ____ option to the ps command displays all processes that do not run on terminals.

Back 63

x

Front 64

After a background process has been started, it can be moved to the foreground by using the ____ command.

Back 64

fg

Front 65

Processes are started with a nice value of ____ by default.

Back 65

0

Front 66

To send a print job to a printer, you must first use the ____ command and specify what to print.

Back 66

lp

Front 67

To see a list of all printers on the system and their status, you can use the -t option to the ____ command.

Back 67

lpstat

Front 68

You can restrict who can print to certain printers by using the ____ command.

Back 68

lpadmin

Front 69

The ____ log file contains information and error messages regarding network access generated by daemons such as sshd and xinetd.

Back 69

secure

Front 70

The ____ priority used by the System Log Daemon indicates an error that should be rectified immediately, such as a corrupt system database.

Back 70

alert

Front 71

You can create user accounts on the Linux system by using the ____ command.

Back 71

useradd

Front 72

The compression algorithm used by the compress utility has an average compression ratio of ____%.

Back 72

40-50

Front 73

When using the compress utility, each file is renamed with a(n) ____ filename extension to indicate that it is compressed.

Back 73

.Z

Front 74

When using the cpio utility, the ____ option causes a new archive to be created.

Back 74

-o

Front 75

The ____ command looks for a Makefile and uses the information within to compile the source code into binary programs using the appropriate compiler program for the local hardware architecture.

Back 75

make

Front 76

The subnet mask for a Class B IP address is ____.

Back 76

255.255.0.0

Front 77

The ____ command can be used to assign a TCP/IP configuration to a NIC as well as view the configuration of all network interfaces in the computer.

Back 77

ifconfig

Front 78

The /etc/resolv.conf file can contain up to ____ DNS servers.

Back 78

three

Front 79

A common utility used to troubleshoot routing is the ____ command.

Back 79

traceroute

Front 80

The ____ utility can be used to obtain a shell from a remote computer on the network without specifying a password.

Back 80

rlogin

Front 81

____ is a remote administration tool that encrypts information that passes across the network.

Back 81

Secure Shell (SSH)

Front 82

The ____ zone configuration file contains a PTR record used to identify the loopback adapter.

Back 82

/var/named/named.local

Front 83

In NTP, stratum ____ consists of atomic devices or GPS clocks.

Back 83

0

Front 84

To identify any missing files in a package or package dependency, you can use the ____ option to the rpm command, followed by the name of the package.

Back 84

-V

Front 85

The shell restricts the number of file handles that programs can open to ____ by default.

Back 85

1024

Front 86

The ____ option to the iptables command can be used to specify the default policy for a certain chaintype.

Back 86

-P

Front 87

The ____ option to the iptables command can be used to specify the destination address of packets for a rule.

Back 87

-d

Front 88

____________________ consists of the physical components inside a computer that are electrical in nature.

Back 88

Hardware

Front 89

The ____________________ is the core component of the Linux operating system.

Back 89

Linux Kernel

Front 90

A(n) ____________________ is a computer or special hardware device that provides interconnection between company networks, home networks, and institutional networks.

Back 90

router

Front 91

The ability for a computer to increase workload as the number of processors increases is known as ____________________.

Back 91

scalability

Front 92

A(n) ____________________ specifies the parameters that tailor a command to your particular needs.

Back 92

argument

Front 93

When a user logs into their Linux system, he is placed in the ____________________ directory.

Back 93

home

Front 94

Text wildcards used to ease the searching of specific text information are called ____________________.

Back 94

regular expressions

Front 95

An alternative to the vi editor that offers an equal set of functionality is the GNU ____________________.

Back 95

Emacs editor

Front 96

To copy a directory full of files in Linux, you must tell the cp command that the copy will be ____________________ (involve files and subdirectories too) by using the -R option.

Back 96

recursive

Front 97

The ____________________ command only searches directories that are listed in a special variable called the PATH variable in the current BASH shell.

Back 97

which

Front 98

To create a(n) ____________________ link, you use the -s option to the ln command.

Back 98

symbolic

Front 99

When a user creates a file or directory, that user’s name and ____________________ becomes the owner and group owner of the file, respectively.

Back 99

primary group

Front 100

If you find a corrupted device file, or accidentally delete a device file, the ____________________ command can be used to re-create the device file if you know the type, major, and minor numbers.

Back 100

mknod

Front 101

Creating a filesystem on a device is commonly referred to as ____________________.

Back 101

formatting

Front 102

An extended partition can contain many subpartitions called ____________________.

Back 102

logical drives

Front 103

Fault tolerant hard disk configurations are typically implemented by a(n) _____________________________________________.

Back 103

RAID

Front 104

If you have an installed Linux system, you can use the ____________________ command to write an ISO image to a USB flash memory drive.

Back 104

dd

Front 105

Most commands that are run by the shell are run in a separate ____________________, which is created by the current shell.

Back 105

subshell

Front 106

The ____________________ command takes user input from stdin and places it in a variable specified by an argument.

Back 106

read

Front 107

When a computer first initializes, the system BIOS performs a(n) _________________________.

Back 107

Power On Self Test

Front 108

The first daemon process on a system is called the ____________________ daemon.

Back 108

initialize (init)

Front 109

The init daemon uses its configuration file, ____________________, determine the number of daemons that need to be loaded on the system to provide system services.

Back 109

/etc/inittab

Front 110

A(n) ____________________ defines the number and type of daemons that are loaded into memory and executed by the kernel on a particular system.

Back 110

runlevel

Front 111

You can see whether a daemon script was executed successfully at boot time by checking the contents of the____________________ file after the system has fully initialized.

Back 111

/var/log/messages

Front 112

A(n) ____________________ refers to a program that is running in memory and on the CPU.

Back 112

process

Front 113

The ____________________ can be used to affect the process priority indirectly.

Back 113

nice value

Front 114

Processes that have encountered an error during execution and continuously uses up system resources are referred to as ____________________ processes.

Back 114

rogue

Front 115

In a process referred to as ____________________, when executing compiled programs or shell scripts, the BASH shell that interprets the command you typed creates a new BASH shell.

Back 115

forking

Front 116

A set of information that is sent to a printer at the same time is called a(n) ____________________.

Back 116

print job

Front 117

On a CUPS printing system, to remove a print job that is in the print queue, you can use the ____________________ command followed by the print job IDs of the jobs to remove.

Back 117

cancel

Front 118

The ____________________ facility used by the System Log Daemon specifies messages from the Linux kernel.

Back 118

kern

Front 119

The ____________________ utility uses the Burrows-Wheeler Block Sorting Huffman Coding algorithm when compressing files.

Back 119

bzip2

Front 120

A(n) ____________________ backup backs up only the data that has been changed since the last backup.

Back 120

incremental

Front 121

Two or more computers that are connected with media that can exchange information are called a(n) ____________________.

Back 121

network

Front 122

A network ____________________ breaks information down into packets that can be recognized by workstations, routers, and other devices on a network.

Back 122

protocol

Front 123

The IP address of the network interface on the router to which you send packets is called the____________________.

Back 123

default gateway

Front 124

____________________ is the process in which a single large network is subdivided into several smaller networks to control traffic flow and improve manageability.

Back 124

Subnetting

Front 125

You can view or set the host name for a Linux computer using the ____________________ command.

Back 125

hostname

Front 126

The first DNS server in a zone is called the ____________________ DNS server.

Back 126

master or primary

Front 127

To share information to Windows client computers, you can use the ____________________ daemon, which emulates the SMB protocol.

Back 127

Samba

Front 128

Processes can initiate numerous connections, called ____________________, to files on the filesystem in addition to standard input, standard output, and standard error.

Back 128

file handles

Front 129

When performance issues arise, you can compare the output of performance utilities to the ____________________ values found in the system log book.

Back 129

baseline

Front 130

The ____________________ command is used to view the current SELinux status.

Back 130

sestatus