37837255
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
Which of the following commands can be used to determine the time of the last login of a given user?
Respuesta
-
Showlog
-
Recent
-
history
-
last
Pregunta 2
Pregunta
Which of the following commands is used to lookup the current IP address of a system?
Respuesta
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Ifconfig
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Sysinfo | grep ipaddress
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Ipconfig
-
Showip
Pregunta 3
Pregunta
Where is the BIOS located?
Respuesta
-
Motherboard
-
Hard drive
-
LCD Monitor
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RAM
Pregunta 4
Pregunta
Which permissions should be given to a file that needs to be opened and edited by the file's owner and opened read-only by the file's group?
Respuesta
-
0640
-
0444
-
0466
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0540
Pregunta 5
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
-
Ln -sys /home/user/foo /user/bin/foo
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Ln -s /user/bin/foo /home/user/foo
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Ln /user/bin/foo /home/user/foo
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Ln /home/user/foo /user/bin/foo
Pregunta 6
Pregunta
What keyword is missing from the following segment of the shell script?for i in*;----cat $idone
Respuesta
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Do
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Endo
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Then
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Fi
Pregunta 7
Pregunta
What is the command that will show system boot time messages?
Respuesta
-
Display system boot
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Messages
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dmesg
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lspci
Pregunta 8
Pregunta
Which of the following is a Linux based operating system for use on mobile devices?
Respuesta
-
Android
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CentOS
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Debian
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Fedora
Pregunta 9
Pregunta
Which network interface always exists in a Linux system?
Respuesta
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wlan0
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lo
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vlan0
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eth0
Pregunta 10
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 11
Pregunta
What is the number called that is used to identify a process?
Respuesta
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Process Entry
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PIN
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PID
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Proc Num
Pregunta 12
Pregunta
Which one of the following statements concerning Linux passwords is true?
Respuesta
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Passwords are only stored in encrypted form
-
Passwords may never start with a non-letter
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Passwords may be at most six characters long
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Users cannot change their password once it has been set
Pregunta 13
Pregunta
What are the three sets of permission for a file?
Respuesta
-
Administrator, standard user, others
-
Administrator, group, others
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User, group, others
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User, standard user, others
Pregunta 14
Pregunta
Which of the following will change the group that is associated with a file?
Respuesta
-
chmod
-
chmod -w
-
chown
-
ls -g
Pregunta 15
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
-
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 16
Pregunta
Which of the following programs is not a graphical web browser?
Respuesta
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Chrome
-
Links
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Konqueror
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Firefox
Pregunta 17
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 18
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 19
Pregunta
Which command will display the last line of the file foo.txt?
Respuesta
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last -n 1 foo.txt
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head -n foo.txt
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tail -n 1 foo.txt
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tail foo.txt
Pregunta 20
Pregunta
Which Linux distribution is used as a basis for the creation of Ubuntu Linux?
Respuesta
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Debian Linux
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Red Hat Linux
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SUSE Linux
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Gentoo Linux
Pregunta 21
Pregunta
Which command is used to make a shell variable known to subsequently executed programs?
Respuesta
-
export
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Announce
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env
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mv
Pregunta 22
Pregunta
Which command displays the list of groups to which a user belongs?
Respuesta
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Id
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Whoami
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Isgroup
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Who
Pregunta 23
Pregunta
Which of the following hardware devices links a number of computers together to form an Ethernet LAN?
Respuesta
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Switch
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Access point
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Terminal
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Server
Pregunta 24
Pregunta
Which of the following commands can be used to extract files from an archive?
Respuesta
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tar -evf
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tar -vf
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tar -v
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tar -xvf
Pregunta 25
Pregunta
Which of the following commands can be used to view a file and do search operations within it while viewing the contents?
Respuesta
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less
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grep
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report
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find
Pregunta 26
Pregunta
What is the first character for a file or directory names if they should not be displayed by commands such as ls unless specifically requested?
Respuesta
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_ (underscore)
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- (minus)
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\ (backslash)
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. (dot)
Pregunta 27
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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man l-k copy
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whatis copy
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copy -help
Pregunta 28
Pregunta
Which of the following software packages is an email server?
Respuesta
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Apache
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MySQL
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Postfix
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GIMP
Pregunta 29
Pregunta
Which of the following can be used to access the command line?
Respuesta
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Firefox
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BIOS
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Terminal
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XWindow
Pregunta 30
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 31
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 sort cannot sort text files, only binary files
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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 32
Pregunta
Which option will cause the echo command NOT to output a trailing newline?
Respuesta
-
-e
-
-n
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-p
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-s
Pregunta 33
Pregunta
Which of the following statements concerning the General Public License (GPL) is true?
Respuesta
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The GPL is designed to ensure that the source code of a software remains freely available
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The GPL is identical to the BSD license
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GPL software may never be sold for money
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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
Pregunta 34
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 35
Pregunta
Which command lists all files in the current directory that starts with a capital letter?
Respuesta
-
ls -uppercase-files
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ls A-Z
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ls A-Z*
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ls [A-Z]*
Pregunta 36
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>2>discard-error>file
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Command>2>file &1>/dev/null
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Command /dev/null
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Command> file2>/dev/null
Pregunta 37
Pregunta
Which of the following Ubuntu releases is considered most stable and fit to use for business purposes?
Respuesta
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LTS
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Ubuntu Vanilla
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Xubuntu
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Kubuntu
Pregunta 38
Pregunta
The following file is found in which system file?
root:x:0:0::/root:/bin/bash
Respuesta
-
/etc/passwd
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/usr/bin/shadow
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/etc/shadow
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/etc/password
Pregunta 39
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
-
/hidden
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/? hidden
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CTRL-F hidden
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Find hidden
Pregunta 40
Pregunta
Incoming SSH connections are accepted by the sshd daemon on which default port?
Respuesta
-
80
-
23
-
21
-
22
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