38240106
Descripción
Test por Carlos Alberto Jara Alva, actualizado hace más de 1 año
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Creado por Carlos Alberto Jara Alva
hace casi 2 años
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Pregunta 1
Pregunta
How could one search for the file foo.txt under the directory /home?
Respuesta
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find /home -name foo.txt
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find /home foo.txt
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search /home -file foo.txt
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search /home foo.txt
Pregunta 2
Pregunta
Which function does a shell program server?
Respuesta
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It receives user commands and executes them
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It is responsible for logging a user into the system
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It is responsible for establishing a connection to another computer
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It provides a graphical environment
Pregunta 3
Pregunta
The output of the program date should be saved in the variable actdat. What is the correct statement?
Respuesta
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Actdat='date'
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Date | acdat
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Set actdat='date'
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Actdat=date
Pregunta 4
Pregunta
Which of the following statements may be used to access the second command line argument to a script?
Respuesta
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"$1"
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"$2"
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'$2'
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$1
Pregunta 5
Pregunta
Which command will display running process information in realtime?
Respuesta
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ps current
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top
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show current
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Process
Pregunta 6
Pregunta
Which of the following file systems is most commonly used for Linux distributions?
Respuesta
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NTFS
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FAT32
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ext4
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HFS+
Pregunta 7
Pregunta
Which one of the following statements concerning Linux passwords is true?
Respuesta
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Passwords are only stored in encrypted form
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Passwords may never start with a non-letter
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All passwords can be decrypted using the system administrator's master password
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Users cannot change their password once it has been set
Pregunta 8
Pregunta
Why is the file data.txt empty after executing sort data.txt > data.txt?
Respuesta
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Because the file gets truncated before the sort is executed
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Because, if data.txt is empty now, it must have been empty before
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Because sort cannot sort text files, only binary files
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Because sort detects that both files are the same
Pregunta 9
Pregunta
Where is the BIOS located?
Respuesta
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RAM
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LCD Monitor
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Hard drive
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Motherboard
Pregunta 10
Pregunta
You have a program called /user/bin/foo. You wish to create a symbolic link, /home/user/bin/foo, that points to it. Which command will do this task?
Respuesta
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ln -s /user/bin/foo /home/user/foo
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ln -sys /home/user/foo /user/bin/foo
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ln /user/bin/foo /home/user/foo
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ln /home/user/foo /user/bin/foo
Pregunta 11
Pregunta
What keyword is missing from the following segment of the shell script?
for i in*;----cat $idone
Respuesta
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Endo
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Do
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Then
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Fi
Pregunta 12
Pregunta
What is the command that will show system boot time messages?
Respuesta
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Display system boot
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Messages
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dmesg
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lspci
Pregunta 13
Pregunta
Which of the following is a Linux based operating system for use on mobile devices?
Respuesta
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CentOS
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Debian
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Android
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Fedora
Pregunta 14
Pregunta
Which network interface always exists in a Linux system?
Respuesta
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lo
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wlan0
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vlan0
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eth0
Pregunta 15
Pregunta
Which command shows if /usr/bin is in the current shell search path?
Respuesta
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cat $PATH
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echo %PATH
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echo $PATH
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echo %PATH%
Pregunta 16
Pregunta
What are the three sets of permission for a file?
Respuesta
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Administrator, standard user, others
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User, group, others
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Administrator, group, others
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User, standard user, others
Pregunta 17
Pregunta
Which of the following programs is not a graphical web browser?
Respuesta
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Chrome
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Konqueror
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Links
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Firefox
Pregunta 18
Pregunta
After installing a new package, in which directory are you most likely find its configuration file?
Respuesta
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/etc
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/conf
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/usr
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/lib
Pregunta 19
Pregunta
What are the three sets of permission for a file?
Respuesta
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Administrator, group, others
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User, group, others
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User, standard user, others
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Administrator, standard user, others
Pregunta 20
Pregunta
Which of the following is true about open source software?
Respuesta
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Open source software is available for commercial use
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Open source software is not for sale
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Open source software can not be copied for free
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The freedom to redistribute copies must include binary or executable forms of the software but not the source code.
Pregunta 21
Pregunta
What is the preferred source for the installation of new applications?
Respuesta
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The distribution's package repository
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A CD-ROM disk
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A retail store
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The vendor's website
Pregunta 22
Pregunta
Which of the following is a combined audio/video interface for transmission of digital data?
Respuesta
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HDMI
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DVD
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VGA
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ATI
Pregunta 23
Pregunta
Which of the following commands moves the directory ~/summer-vacation and it content to ~/vacation/2011?
Respuesta
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mv ~/summer-vacation ~/vacation/2011
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mv -R ~/summer-vacation ~/vacation/2011
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move -R ~/summer-vacation ~/vacation/2011
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mv /home/summer-vacation /home/vacation/2011
Pregunta 24
Pregunta
Which command line can be used to search help files that mention the word "copy"?
Respuesta
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copy help
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whatis copy
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man l-k copy
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copy -help
Pregunta 25
Pregunta
Which of the following software packages is an email server?
Respuesta
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Postfix
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Apache
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MySQL
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GIMP
Pregunta 26
Pregunta
Which of the following can be used to access the command line?
Respuesta
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Terminal
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Firefox
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BIOS
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XWindow
Pregunta 27
Pregunta
After installing a new package, in which directory are you most likely find its configuration file?
Respuesta
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/usr
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/conf
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/etc
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/lib
Pregunta 28
Pregunta
Why is the file data.txt empty after executing sort data.txt > data.txt?
Respuesta
-
Because the file gets truncated before the sort is executed
-
Because sort cannot sort text files, only binary files
-
Because sort detects that both files are the same
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Because, if data.txt is empty now, it must have been empty before
Pregunta 29
Pregunta
Which option will cause the echo command NOT to output a trailing newline?
Respuesta
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-p
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-e
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-n
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-s
Pregunta 30
Pregunta
Which of the following statements concerning the General Public License (GPL) is true?
Respuesta
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If you changed a program you received under the GPL, you must send your changes to the original author for approval
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GPL software may never be sold for money
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The GPL is identical to the BSD license
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The GPL is designed to ensure that the source code of a software remains freely available
Pregunta 31
Pregunta
Identify the proper device for the third partition, on the second hard disk, on the first IDE controller on a PC system.
Respuesta
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/dev/hdb3
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/dev/hd1b3
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/dev/hdc1d2p3
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Dev/hdc1a3
Pregunta 32
Pregunta
Which command lists all files in the current directory that starts with a capital letter?
Respuesta
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ls A-Z*
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ls [A-Z]*
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ls A-Z
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ls -uppercase-files
Pregunta 33
Pregunta
How can the normal output of a command be written to a file while discarding the error output?
Respuesta
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Command> file2>/dev/null
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Command /dev/null
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Command>2>file &1>/dev/null
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Command>2>discard-error>file
Pregunta 34
Pregunta
Which of the following Ubuntu releases is considered most stable and fit to use for business purposes?
Respuesta
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Ubuntu Vanilla
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LTS
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Xubuntu
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Kubuntu
Pregunta 35
Pregunta
The following file is found in which system file?
root:x:0:0::/root:/bin/bash
Respuesta
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/usr/bin/shadow
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/etc/passwd
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/etc/shadow
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/etc/password
Pregunta 36
Pregunta
Which is a suitable command to find the next appearance of the word hidden in a man page being viewed from the command line?
Respuesta
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/hidden
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/? hidden
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CTRL-F hidden
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Find hidden
Pregunta 37
Pregunta
While deleting all files beginning with the letter a there was still the file Access.txt left. Assuming that it had the correct ownership, why was it not deleted?
Respuesta
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Linux file names are case sensitive
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Rm had to be called with the option -R to delete all files
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Files with extensions need a different treatment
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The file Access.txt was hidden
Pregunta 38
Pregunta
What is the output of the following command?tail -n 20 test.txt
Respuesta
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The last 20 lines of test.txt including the black lines
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The last 20 lines of test.txt omitting the black lines
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The last 20 lines of test.txt with line numbers
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The first 20 lines of test.txt
Pregunta 39
Pregunta
Which of the following commands will display a list of all files in the current directory, including those that may be hidden?
Respuesta
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ls -a
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ls --hidden
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ls -h
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ls --a
Pregunta 40
Pregunta
Which command will display the last line of the file foo.txt?
Respuesta
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tail -n 1 foo.txt
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last -n 1 foo.txt
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head -n foo.txt
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tail foo.txt
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