Unix Final Study Guide

When using the mount command, you use the ____ option to specify a file system to mount. A) -f B) -d C) -t D) -m

C) -t

In a flowchart, a(n) ____ is an on-page connector to continue process flow. A) Diamond B) Rectangle C) Circle D) Arrow

C) Circle

61) ____ variables are used to store information about the setup of the operating system, and after they are set up, you typically do not change them. A) Global B) Environment C) Configuration D) Shell

C) Configuration

The line in the script for setting the Bash shell is: ____. A) #!/bin/bash B) !#/bin/bash C) #/bin/bash D) !/bin/bash

A) #!/bin/bash

To run a program in the background, append the ____ character to the end of the command used to start the program. A) & B) * C) $ D ) @

A) &

The ____ option of the diff command ignores blanks that repeat. A) -b B) -B C) -c D) -C

A) -b

The ____ directory contains the kernel (operating system) images. A) /boot B) /bin C) /dev D) /etc

A) /boot

69) When editing a text file with vi, if you want to save your changes and exit right away, you can use ____ or ZZ from command mode. A) :wq B) :q! C) :se D) :sq

A) :wq

84) The ____ Emacs command is used to move the cursor to the beginning of the file. A) Alt+< B) Ctrl+< C) Alt+b D) Ctrl+b

A) Alt+<

76) The ____ Emacs command is used to mark the cursor location. A) Ctrl+@ B) Ctrl+> C) Ctrl+< D) Ctrl+m

A) Cntrl+@

73) The clear command has no options or arguments. A) True B) False

A) True

78) Like the vi editor, Emacs lets you search for specific text. A) True B) False

A) True

88) A directory is a special kind of file that can contain other files and directories. A) True B) False

A) True

93) Most shells keep a list of your recently used commands and allow you to recall a command without retyping it. A) True B) False

A) True

94) The command cd source uses relative path addressing. A) True B) False

A) True

A high-level language is a computer language that uses English-like expressions. A) True B) False

A) True

As a general rule, the swap partition should be the same size as the amount of RAM in your computer. A) True B) False

A) True

One of the most effective utilities for auditing system performance is the top command. A) True B) False

A) True

The rm - r command can be used to delete a directory that is not empty. A) True B) False

A) True

Unlike top, the free utility runs and then automatically exits. A) True B) False

A) True

When you use restore, by default it copies back to your current working directory. A) True B) False

A) True

You can complete a project using awk that you cannot complete using a combination of paste, cut, sort, and join. A) True B) False

A) True

You can use the less command with a directory to view its contents one screen at a time, such as less/sbin. A) True B) False

A) True

You should omit spaces when you assign a variable without using single or double quotation marks around its value. A) True B) False

A) True

89) To append new lines in sed, you must use the ____ command A) a\ B) -a C) \a D) >a

A) a\

You can use the ____ utility to compare the contents of two files, and if there is a difference, the command A) cmp B) compare C) diff D) difference

A) cmp

You can access vi's ex mode by pressing Esc, and then typing a(n) ____ to enter extended commands at the bottom of the screen. A) colon (:) B) semicolon (;) C) tilde (~) D) exclamation sign (!)

A) colon (:)

77) The ____ reads the lines of code that the programmer wrote in the source file and converts them to the appropriate machine-language instructions. A) compiler B) linker C) assembler D) interpreter

A) compiler

63) In the Linux Bash shell, the ____ key combination moves the cursor to the previous letter. A) Ctrl+b B) Alt+d C) Alt+l D) Ctrl+a

A) ctrl+b

64) In a flowchart, a(n) ____ is used to represent a decision. A) diamond B) rectangle C) circle D) arrow

A) diamond

A ____ is a logic diagram that uses a set of standard symbols to visually explain the sequence of events from the start of a process to its end point. A) flowchart B) map C) block chart D) psuedocode

A) flowchart

The UNIX file system (ufs) supports ____, which automatically move data on damaged portions of disks to areas that are not damaged. A) hot fixes B) backups C) recovery fixes D) extents

A) hot fixes

The ____ utility manages a firewall and packet filtering. A) iptables B) netstat C) passwd D) wall

A) iptables

Character special files are used by input/output devices for communicating one character at a time, providing what is called ____ data. A) raw B) binary C) ASCII D) block

A) raw

74) ____ is a selection command. A) uniq B) awk C) sort D) sed

A) uniq

The ____ option of the diff command does not compare for blank lines. A) -b B) -B C) -c D) -C

B) -B

The ____ directory contains executables, which are the programs needed to start the system and perform other essential system tasks. A) /boot B) /bin C) /dev D) /etc

B) /bin

68) The df utility reports the number of ____-byte blocks that are allocated, used, and available; the percentage used; and the mount point—for mounted file systems. A) 512 B) 1024 C) 2048 D) 4096

B) 1024

79) Using ____ plus a command-line command enables you to start a new shell, run the command, and then go back into the vi editor. A) :q B) :! C) :c D) :$

B) :!

65) Stephen Bourne at AT&T Bell Labs developed the ____ shell as the first UNIX command processor. A) Bash B) Bourne C) C D) Korn

B) Bourne

67) Shell scripts can automatically access variables created and assigned on the command line. A) True B) False

B) False

72) For some languages, such as Chinese, the ASCII character set is preferred instead of the Unicode character set. A) True B) False

B) False

81) The less command scrolls only down, whereas more enables you to scroll down and up. A) True B) False

B) False

86) When using wc, you cannot specify all three options (-l, -w and -c) in the command line at the same time. A) True B) False

B) False

A disadvantage of ufs is that it does not support journaling. A) True B) False

B) False

In UNIX/Linux, all shells support the same commands and programming statements. A) True B) False

B) False

Shell scripts run more quickly than compiled programs. A) True B) False

B) False

When you use the paste command, by default, the pasted results appear in columns separated by commas. A) True B) False

B) False

You can use the < operator to redirect a command's output from the screen to a file. A) True B) False

B) False

87) The two most popular hard disk interfaces are IDE and ____. A) ATA B) SCSI C) EIDE D) RAID

B) SCSI

59) The ____ utility schedules a command to run at a preset time. A) batch B) crontab C) call D) at

B) crontab

A byte consists of ____ binary digits. A) four B) eight C) ten D) twelve

B) eight

Compiled and interpreted files that can be run are called ____ program files. A) binary B) executable C) assembly D) dynamic

B) executable

91) In Linux, the native file system is the ____, which is installed by default. A) ufs B) ext fs C) ReiserFS D) jfs

B) ext fs

75) The UNIX/Linux shell acts as a(n) ____ when reading script files. A) compiler B) interpreter C) assembler D) linker

B) interpreter

97) The ____ utility gathers statistics and information about IP communications on a computer. A) ping B) netstat C) traceroute D) ifconfig

B) netstat

85) In a flowchart, a(n) ____ is used to represent a process. A) diamond B) rectangle C) circle D) arrow

B) rectangle

98) ____ are programs that perform operations such as copying files, listing directories, and communicating with other users. A) Extents B) Utilities C) Applications D) Services

B) utilities

83) The ____ statement continues to loop and execute commands or statements as long as a given condition or set of conditions is true. A) for B) while C) esac D) case

B) while

58) The .bashrc file is a hidden file contained in ____ directory. A) the root B) your home C) the /usr D) the /home

B) your home

The ____ option of the diff command shows lines surrounding the line that differs. A) -d B) -D C) -c D) -C

C) -c

60) ____ are typically not compiled into machine code prior to running, but are executed through an interpreter. A) Programs B) Executable programs C) Scripts D) Libraries

C) Scripts

____ is an Internet terminal emulation program. A) IP B) Emulab C) Telnet D) Terminal

C) Telnet

95) ____ is the default file name for the output of program compilation procedures. A) out.a B) obj.a C) a.out D) a.obj

C) a.out

92) You can use the ____ command to show the system calendar. A) clndr B) syscal C) cal D) calendar

C) cal

Logic structures are also called ____ structures. A) decision B) sequential C) control D) programming

C) control

Possessing a rich set of options that allow it to handle copies when other methods are inappropriate, the ____ command can handle conversions to and from legacy EBCDIC to ASCII. A) tee B) convert C) dd D) df

C) dd

100) The root of a file system is denoted by the ____. A) dot (.) B) dot dot (..) C) forward slash (/) D) backward slash (\)

C) forward slash (/)

The term ____ refers to a "black hole"; any data sent to this device is gone forever. A) void B) root C) null D) console

C) null

The ____ redirects the output of one command to the input of another command. A) output redirection operator (>) B) input redirection operator (<) C) pipe operator(|) D) tilde (~)

C) pipe operator (|)

In shell scripts, comment lines begin with a(n) ____. A) tilde (~) character B) dollar ($) sign C) pound (#) symbol D) exclamation (!) sign

C) pound (#) symbol

62) In UNIX/Linux, text files and binary files are considered to be ____ files. A) executable B) document C) regular D) dynamic

C) regular

System administrators and programmers refer to standard output as ____. A) sout B) stout C) stdout D) standardout

C) stdout

66) The second step in the program development cycle is ____. A) creating program specifications B) coding the program C) the design process D) debugging

C) the design process

When you create a script, you should include the command that sets the particular shell to use on ____. A) the configuration file B) your login script C) the first line of the script D) the last line of the script

C) the first line of the script

56) In the vi editor, lines containing a(n) ____ are not part of the file; they indicate lines on the screen only. A) colon (:) B) semicolon (;) C) tilde (~) D) exclamation sign (!)

C) tilde (~)

The ____ command displays a listing of the most CPU-intensive tasks, such as the processor state, in real time (the display is updated every five seconds by default). A) stat B) netstat c) top d) ds

C) top

71) The ____ command removes duplicate lines from a file. A) grep B) dup C) uniq D) diff

C) uniq

In the Linux Bash shell, the ____ key combination deletes the content of the command line from the current cursor position to the end of the command line. A) Ctrl+b B) Alt+d C) Ctrl+k D) Ctrl+a

Ctrl+k

The ____ option of the ping command displays only a summary of the results. A) -s B) -r C) -c D) -q

D) -q

The ____option of the uniq command instructs it to generate as output only the lines of the source file that are not duplicated successively. A) -d B) -s C) -o D) -u

D) -u

The ____ directory contains configuration files that the system uses when the computer starts. A) /boot B) /bin C) /dev D) /etc

D) /etc

90) If you plan to have multiple users access a system, you can create a ____ partition, which is the home directory for all users' directories. A) /root B) /etc C) /usr D) /home

D) /home

In a flowchart, a(n) ____ is used to indicate process flow. A) diamond B) rectangle C) circle D) arrow

D) arrow

82) ____ gives the owner read, write, and execute permissions. A) chmod 155 B) chmod 551 C) chmod 577 D) chmod 755

D) chmod 755

Each record in the /etc/passwd file is simply a record with variable-length fields separated by ____. A) dashes (-) B) commas (,) C) semicolons (;) D) colons (:)

D) colons (:)

The ____ command locates identical lines within two identically sorted files. A) diff B) sed C) uniq D) comm

D) comm

96) The vi editor's ____ mode is started by pressing Esc. A) edit B) insert C) ex D) command

D) command

The vi editor works in three modes: insert mode, ____ mode, and extended mode. A) edit B) line C) screen D) command

D) command

41) The command > accountsfile ____. A) Deletes de file accountsfile B) is not valid in UNIX/Linux systems C) displays the contents of the file accountsfile on the screen D) creates an empty file called accountsfile

D) creates an empty file called accountsfile

The ____ utility manages concurrent access to files in a hierarchy. A) tree B) rlog C) rcs D) cvs

D) cvs

The UNIX/Linux ____ command displays the system date, which the system administrator maintains. A) Today B) Sysdate C) System D) Date

D) date

You can start Emacs by entering the ____ command in the terminal window or at a command line in UNIX/Linux. A) e B) em C) emcs D) emacs

D) emacs

80) A(n) ____ is used to reduce file fragmentation, because a block of contiguous disk storage can be reserved for a file. A) partition B) node C) journal D) extent

D) extent

57) The ____ command displays the amount of free and used memory in the system. A) mem B) stat C) memstat D) free

D) free

99) To view a list of the files in a directory, including the hidden files, you should enter ____. A) ls -l B) ls -r C) ls -h D) ls -a

D) ls -a

The exclusive use of 0s and 1s as a way to communicate with the computer is known as ____ language. A) mathematical B) logical C) binary D) machine

D) machine

The ____ utility offers a simple way to test connections. A) ifconfig B) test C) netstat D) ping

D) ping

____ is NOT a selection command. A) comm B) diff C) grep D) sed

D) sed

The ____ partition acts like an extension of memory, so that UNIX/Linux have more room to run large programs. A) backup B) primary C) virtual D) swap

D) swap