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
Unix is: (choose two)
An operating system
A type of hardware
A trademark
A distribution of Linux
A text editor
Linux is written in:
C
.NET
C++
Java
Perl
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
Whats is the standard option to provide a command line program to view its documentation?
-- info
-- doc
-- help
- h
The command man -k is the same as the command apropos
The whatis command is the same as man -w
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
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
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
Is the following path absolute or relative? sysadmin/Documents
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
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
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
You type gzip myfile.tar. Whats 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
Error messages generated by commands are sent where by default?
STDIN
Log files
STDERR
STDOUT
A successful command will print output to STDOUT
Which of the following commands will direct error messages to the file, error.log?
ls /root > error.log
ls /root >> error.log
ls /root 2> error.log
ls /root $> 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
Channel 2 is:
STDALL
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 the another
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
Which are appropriate editors for writing shell scripts? (choose two)
nano
LibreOffice Writer
/bin/bash
vi
Firefox
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
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 and error if there is a problem
Outputs a message to the screen
Which of the following are valid CPU types for Intel-based platforms? (choose two)
48 bit
24 bit
64 bit
32 bit
64 bit platforms can access more memory than 32 bit platforms
What does the acronym RPM mean?
Relocate Package Manager
Return Package Management
RPM Package Management
Recursive Package Manager
One way to install new software on a Linux system is to use a package management system
When you execute the dmesg command, the system displays messages that are generated by the kernel
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
Which of the following are package management commands for distributions with software distributed in files ending in .rpm? (choose three)
yum
yumex
Which of the following would be considered a host?
A printer attached to the network via an IP addres
A CDROM
The computer's hard drive
A network cable
A service is...
...a file that constains configuration information
...another name for a computer's hostname
...a feature provided by one computer to another
...like an IP address
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
Only servers have hostnames
Which files contain user account information? (choose two)
/etc/passwd
/etc/shadow
/etc/group
Which user can view the /etc/shadow file?
The root user
No users
Any member of the password group
All users
Which command will display the UID, GID and groups your current user belongs to?
id
whoami
who
about
Each user belongs to at least one group
Which command will display the users that are currently logged in to the system?
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
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
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
Which of the following options for the useradd command allows root to specify supplementary groups the user will be a member of?
On a system that does not user UPG, the useradd command will also create a user group. For example, user bob, group bob.
Which of the following commands set "other" permissions on the file to r-x?
chmod o+rx file
chmod o-r-w file
chmod o=r+x 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
Onlye one set (user, group, other) of permission can be changed at once using the symbolic method
Which of the following are methods for setting permissions using the chmod command? (choose two)
letter
octal
symbolic
binay
The chown command can be used to change the owner and group of a file
The Samba application is a:
Mail Server
Security Server
File Server
Web Server
Which of the following are examples of desktop software? (choose two)
Web server
Web browser
File share
Compiler
Music player
If you wanted to set up a blog, which software would be most helpful?
MySQL
Postfix
WordPress
Dovecot
Samba
Which of the following pieces of software deal with file sharing? (choose three)
NFS
X-Windows
Netatalk
PostgreSQL
If you wanted to create and print an invoice, which software could you use?
GNOME
Compiz
LibreOffice
Evolution
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
Which of the following is provided by a graphical interface that isn't normally provided to a non graphical interface? (choouse four)
Desktop
Shell
Windows
Popups
Menus
A server is likely to be running in graphical mode
In graphical mode, you can get to a shell by running which applications? (choose two)
guiterm
gbash
terminal
xconsole
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
Select all the applications that provide access to the Command Line Interface (CLI)? (choose two)
Virtual Terminal
Opera
Windows Terminal
Which environment varible contains a list of directories that is searched for commands to execute?
PATH
EXEC
PS1
PS2
Select the command that can report the location of a command:
where
what
which
A pair of single quotes (') will prevent the shell from interpreting any metacharacter
The /tmp directory is a temporary directory and will not exist on a system at all times
The /var directory has files that change over time
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
Which of the following commands will set the "sticky bit" on /shared?
chmod 4777 /shared
chmod 2777 /shared
chmod 7777 /shared
chmod 1777 /shared
The "setuid" permission...
...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
