5250895
Descripción
Test por Yeredaia Miranda, actualizado hace más de 1 año
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Creado por Yeredaia Miranda
hace alrededor de 8 años
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Pregunta 1
Pregunta
One of the jobs of the kernel is to:
Respuesta
-
Manage the system's resources
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Turn source code into machine code
-
Load the operating system after the computer is turned on
-
Transfer mail from one machine to another
Pregunta 2
Pregunta
Unix is: (choose two)
Respuesta
-
An operating system
-
A type of hardware
-
A trademark
-
A distribution of Linux
-
A text editor
Pregunta 3
Pregunta
Linux is written in:
Respuesta
-
C
-
.NET
-
C++
-
Java
-
Perl
Pregunta 4
Pregunta
Source code refers to:
Respuesta
-
The version of a program that the computer runs on the CPU
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The license that dictates how you may use and share the software
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The interface that software uses to talk to the kernel
-
A human readable version of computer software
Pregunta 5
Pregunta
Whats is the standard option to provide a command line program to view its documentation?
Respuesta
-
-- info
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-- doc
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-- help
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- h
Pregunta 6
Pregunta
The command man -k is the same as the command apropos
Respuesta
- True
- False
Pregunta 7
Pregunta
The whatis command is the same as man -w
Respuesta
- True
- False
Pregunta 8
Pregunta
The directory where additional documentation for software packages most likely can be found is:
Respuesta
-
/var/lib/doc
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/usr/software/doc
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/usr/share/doc
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/var/share/doc
Pregunta 9
Pregunta
Hidden files are files that begin with what character?
Respuesta
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A plus (+)
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A dash (-)
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A period (.)
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An asterisk (*)
Pregunta 10
Pregunta
What option for the ls command will display all files, including hidden files?
Respuesta
-
-w
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-H
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-L
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-a
Pregunta 11
Pregunta
The top-level directory on a Linux system is represented as:
Respuesta
-
/
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/root
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/home
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C:
Pregunta 12
Pregunta
Is the following path absolute or relative?
/etc/ppp
Respuesta
-
Relative
-
Absolute
Pregunta 13
Pregunta
Is the following path absolute or relative?
sysadmin/Documents
Respuesta
-
Relative
-
Absolute
Pregunta 14
Pregunta
Compression on a file works by:
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Removing the high order bit from each byte
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Consolidating multiple files into one
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Removing redundant information
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Storing most of the data on removable media and just leaving a pointer
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Eliminating gaps within the file
Pregunta 15
Pregunta
In general, for which of the following would you want to use lossless compression?
Respuesta
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An mp3 audio file
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A movie
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A log file
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A JPEG image
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An encrypted email
Pregunta 16
Pregunta
Lossy compression: (choose three)
Respuesta
-
Is often used with documents
-
Decompresses to an identical version as the original
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Sacrifices some quality
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Usually results better compression than lossless
-
Is often used with images
Pregunta 17
Pregunta
You type gzip myfile.tar. Whats happens? (choose two)
Respuesta
-
myfile.tar.gz holds a compressed version of myfile.tar
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An error; you forgot to pass the name of the output file
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An error; you forgot to specify the file with -f
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myfile.tar is unarchived into the current directory
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myfile.tar is removed
Pregunta 18
Pregunta
Error messages generated by commands are sent where by default?
Respuesta
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STDIN
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Log files
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STDERR
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STDOUT
Pregunta 19
Pregunta
A successful command will print output to STDOUT
Respuesta
- True
- False
Pregunta 20
Pregunta
Which of the following commands will direct error messages to the file, error.log?
Respuesta
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ls /root > error.log
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ls /root >> error.log
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ls /root 2> error.log
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ls /root $> error.log
Pregunta 21
Pregunta
A pipe allows you to...
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...send the same input to multiple commands
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...send the output of one command to another
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...send the output of a command to a file
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...type multiple commands at one prompt
Pregunta 22
Pregunta
Channel 2 is:
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STDERR
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STDIN
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STDALL
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STDOUT
Pregunta 23
Pregunta
The echo command:
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-
Tests a variable for duplication
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Duplicates the input stream to the output stream
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Is used for variable assignment
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Is used to output text to the console
-
Copies variables from one the another
Pregunta 24
Pregunta
A file begins with #!/bin/csh. This means:
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C Shell compatibility mode is enabled
-
Running the script will invoke /bin/csh to interpret the rest of the file
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The operator should not be using /bin/csh
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This is a Perl script
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Nothing, this is a comment
Pregunta 25
Pregunta
Which are appropriate editors for writing shell scripts? (choose two)
Respuesta
-
nano
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LibreOffice Writer
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/bin/bash
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vi
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Firefox
Pregunta 26
Pregunta
Most of nano's commands take the form of:
Respuesta
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Escape followed by another character
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Mouse clicks
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The F1 through F12 function keys
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Alt and another character
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Control and another character
Pregunta 27
Pregunta
What does this shell script do?
FOO=/tmp/foo
if [! -d $FOO]; then
mkdir $FOO
fi
Respuesta
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Nothing, since there is a problem with the conditions in the if statement
-
Makes the /tmp/foo directory if a file by that name exists
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Creates /tmp/foo if it does not exist
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Creates /tmp/foo and raises and error if there is a problem
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Outputs a message to the screen
Pregunta 28
Pregunta
Which of the following are valid CPU types for Intel-based platforms? (choose two)
Respuesta
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48 bit
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24 bit
-
64 bit
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32 bit
Pregunta 29
Pregunta
64 bit platforms can access more memory than 32 bit platforms
Respuesta
- True
- False
Pregunta 30
Pregunta
What does the acronym RPM mean?
Respuesta
-
Relocate Package Manager
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Return Package Management
-
RPM Package Management
-
Recursive Package Manager
Pregunta 31
Pregunta
One way to install new software on a Linux system is to use a package management system
Respuesta
- True
- False
Pregunta 32
Pregunta
When you execute the dmesg command, the system displays messages that are generated by the kernel
Respuesta
- True
- False
Pregunta 33
Pregunta
Which of the following are package management commands for distributions with software distributed in files ending in .deb? (choose three)
Respuesta
-
rpm
-
apt-get
-
dpkg
-
aptitude
Pregunta 34
Pregunta
Which of the following are package management commands for distributions with software distributed in files ending in .rpm? (choose three)
Respuesta
-
yum
-
apt-get
-
rpm
-
yumex
Pregunta 35
Pregunta
Which of the following would be considered a host?
Respuesta
-
A printer attached to the network via an IP addres
-
A CDROM
-
The computer's hard drive
-
A network cable
Pregunta 36
Pregunta
A service is...
Respuesta
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...a file that constains configuration information
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...another name for a computer's hostname
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...a feature provided by one computer to another
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...like an IP address
Pregunta 37
Pregunta
A network packet contains... (choose two)
Respuesta
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...the IP address of the destination machine
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...a hard drive partition
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...the name of the router
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...the IP address of the source machine
Pregunta 38
Pregunta
Only servers have hostnames
Respuesta
- True
- False
Pregunta 39
Pregunta
Which files contain user account information? (choose two)
Respuesta
-
/etc/passwd
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/etc/shadow
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/etc/group
Pregunta 40
Pregunta
Which user can view the /etc/shadow file?
Respuesta
-
The root user
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No users
-
Any member of the password group
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All users
Pregunta 41
Pregunta
Which command will display the UID, GID and groups your current user belongs to?
Respuesta
-
id
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whoami
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who
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about
Pregunta 42
Pregunta
Each user belongs to at least one group
Respuesta
- True
- False
Pregunta 43
Pregunta
Which command will display the users that are currently logged in to the system?
Respuesta
-
who
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about
-
whoami
-
id
Pregunta 44
Pregunta
UIDs 1-500 are usually reserved for what kind of users?
Respuesta
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Are not used for user accounts, but for group accounts
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System accounts, such as server processes
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Remote log-in accounts
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Log-in (human) users
Pregunta 45
Pregunta
If a user is deleted, the files and directories that the user owned...
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...are deleted as well
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...will have no UID owner
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...will show a UID as the owner, but not user name
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...will have no user owner
Pregunta 46
Pregunta
Which of the following options for the useradd command allows root to specify the UID to be associated with the account?
Respuesta
-
-g
-
-u
-
-U
-
-G
Pregunta 47
Pregunta
Which of the following options for the useradd command allows root to specify supplementary groups the user will be a member of?
Respuesta
-
-u
-
-U
-
-g
-
-G
Pregunta 48
Pregunta
On a system that does not user UPG, the useradd command will also create a user group. For example, user bob, group bob.
Respuesta
- True
- False
Pregunta 49
Pregunta
Which of the following commands set "other" permissions on the file to r-x?
Respuesta
-
chmod o+rx file
-
chmod o-r-w file
-
chmod o=r+x file
-
chmod o=rx file
Pregunta 50
Pregunta
Which of the following commands sets "other" permissions on file to r-x?
Respuesta
-
chmod 774 file
-
chmod 776 file
-
chmod 775 file
-
chmod 777 file
Pregunta 51
Pregunta
Onlye one set (user, group, other) of permission can be changed at once using the symbolic method
Respuesta
- True
- False
Pregunta 52
Pregunta
Which of the following are methods for setting permissions using the chmod command? (choose two)
Respuesta
-
letter
-
octal
-
symbolic
-
binay
Pregunta 53
Pregunta
The chown command can be used to change the owner and group of a file
Respuesta
- True
- False
Pregunta 54
Pregunta
The Samba application is a:
Respuesta
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Mail Server
-
Security Server
-
File Server
-
Web Server
Pregunta 55
Pregunta
Which of the following are examples of desktop software? (choose two)
Respuesta
-
Web server
-
Web browser
-
File share
-
Compiler
-
Music player
Pregunta 56
Pregunta
If you wanted to set up a blog, which software would be most helpful?
Respuesta
-
MySQL
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Postfix
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WordPress
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Dovecot
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Samba
Pregunta 57
Pregunta
Which of the following pieces of software deal with file sharing? (choose three)
Respuesta
-
NFS
-
X-Windows
-
Netatalk
-
Samba
-
PostgreSQL
Pregunta 58
Pregunta
If you wanted to create and print an invoice, which software could you use?
Respuesta
-
GNOME
-
Compiz
-
Firefox
-
LibreOffice
-
Evolution
Pregunta 59
Pregunta
Which of the following is true about graphical mode? (choose three)
Respuesta
-
You have menus and tools to help you find what you are looking for
-
You access this mode by logging into a graphical display
-
After login, you are provided with a command prompt
-
After login, you are provided with a desktop
-
You cannot use your mouse
Pregunta 60
Pregunta
Which of the following is provided by a graphical interface that isn't normally provided to a non graphical interface? (choouse four)
Respuesta
-
Desktop
-
Shell
-
Windows
-
Popups
-
Menus
Pregunta 61
Pregunta
A server is likely to be running in graphical mode
Respuesta
- True
- False
Pregunta 62
Pregunta
In graphical mode, you can get to a shell by running which applications? (choose two)
Respuesta
-
guiterm
-
gbash
-
terminal
-
xconsole
-
xterm
Pregunta 63
Pregunta
Which of the following are traits of a multiuser operating system? (choose three)
Respuesta
-
An administrative user gets a dedicated CPU
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Users can protect their information from other users
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Resources are shared between users
-
Many users can log in simultaneously with a unique account
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Each user can only log in once per day
Pregunta 64
Pregunta
Select all the applications that provide access to the Command Line Interface (CLI)? (choose two)
Respuesta
-
Virtual Terminal
-
Firefox
-
Opera
-
Windows Terminal
Pregunta 65
Pregunta
Which environment varible contains a list of directories that is searched for commands to execute?
Respuesta
-
PATH
-
EXEC
-
PS1
-
PS2
Pregunta 66
Pregunta
Select the command that can report the location of a command:
Respuesta
-
where
-
what
-
which
Pregunta 67
Pregunta
A pair of single quotes (') will prevent the shell from interpreting any metacharacter
Respuesta
- True
- False
Pregunta 68
Pregunta
The /tmp directory is a temporary directory and will not exist on a system at all times
Respuesta
- True
- False
Pregunta 69
Pregunta
The /var directory has files that change over time
Respuesta
- True
- False
Pregunta 70
Pregunta
The "sticky bit" permission...
Respuesta
-
...prevents others from removing files they don't own from a common directory
-
...changes the group ownership of existing files in a directory
-
..prevents others from overwriting files they don't own in common directories
-
...sets the group ownership of any new file created in a directory
Pregunta 71
Pregunta
Which of the following commands will set the "sticky bit" on /shared?
Respuesta
-
chmod 4777 /shared
-
chmod 2777 /shared
-
chmod 7777 /shared
-
chmod 1777 /shared
Pregunta 72
Pregunta
The "setuid" permission...
Respuesta
-
...allows a command to be run as the file owner
-
...allows file in a directory to be manipulated as by the directory owner
-
...prevents the owner of a file from being changed
-
...reports the output of a script to the owner
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