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