Last Updated on October 17, 2019 by Admin
NDG Linux Essentials 2.0 Final Exam (Chapter 9-18) Answers
-
Which of the following are traits of a multiuser operating system?
(choose three)
- Resources are shared between users
- Users can protect their information from other users
- Many users can log in simultaneously with a unique account
- Each user can only log in once per day
- An administrative user gets a dedicated CPU
-
A pipe allows you to…
- …send the same input to multiple commands.
- …type multiple commands at one prompt.
- …send the output of one command to another.
- …send the output of a command to a file.
-
Channel 2 is:
- STDALL
- STDOUT
- STDERR
- STDIN
-
The
grep
command…- …will display all the lines that begin with the specified Regular Expression.
- …will display all the lines in a file containing the specified Regular Expression.
- …is not case sensitive.
- …will display the line numbers in a file that contain a specified Regular Expression.
-
Which of the following commands can be used to scroll through a text file?
(choose two)
- cat
- less
- some
- more
-
Which command can be used to print line numbers?
- ln
- nl
- sort
- num
-
Which are appropriate editors for writing shell scripts?
(choose two)
- LibreOffice Writer
- vi
- Firefox
- nano
- /bin/bash
-
Which of the following are correct about for and while loops?
(choose two)
- while loops operate over a fixed list of items
- for loops have a test each cycle to determine if it should run again
- while loops have a test each cycle to determine if it should run again
- for loops operate over a fixed list of items
- for loops require a variable over which to iterate
-
What is the correct way to assign the word “Hello” to a variable?
- $A=”Hello”
- A = “Hello”
- echo “Hello” > A
- A=”Hello”
- echo $A “Hello”
-
What is the correct way to save the current directory to a variable?
- pwd $A
- A=cwd
- A=`pwd`
- A=pwd
- pwd | $A
-
What is the meaning of
$(( $i + 1))
?- If i is 0, the loop will stop
- This runs the command stored in variable i
- This will return the value of the next argument to the script
- 1 will be added to the i variable
- This will return the value of the first argument to the script
-
Which of the following are valid CPU types for Intel-based platforms?
(choose two)
- 64-bit
- 24-bit
- 32-bit
- 48-bit
-
Choose all of the following statements that are true in regard to virtual RAM:
(choose three)
- Virtual RAM is stored in the CPU
- Virtual RAM is also called swap space
- Virtual RAM is stored on a hard drive
- Virtual RAM is used when available physical RAM is low.
-
A division of a hard drive may be referred to as a _______ .
- label
- block
- portion
- partition
-
The
fdisk
command is a tool used for working with the MBR partitioned disks.True or False?
- True
- False
-
Which of the following commands will display CPU information?
(choose two)
- cpuinfo
- lscpu
- showcpu
- lspic
- arch
-
The Process ID (PID) of the init process is:
- 100
- 0
- 1
- varies
-
What directory typically contains log files?
- /proc/loc
- /usr/log
- /log
- /var/log
-
The
/var
directory has files that change over time.True or False?
- True
- False
-
Which of the following commands will allow you to view all processes on the system?
(choose two)
- ps -ef
- ps aux
- ps -eLf
- ps -A
- ps
-
Which directory is the root of the filesystem?
- /sys
- /
- /var
- /home
- /root
-
A service is…
- …another name for a computer’s hostname.
- …a file that contains configuration information.
- …like an IP address.
- …a feature provided by one computer to another.
-
Only servers have hostnames.
True or False?
- True
- False
-
Which of the following are valid IPv4 addresses?
(choose two)
- 10.33.55.77
- 192.105.10.10.2
- 192.105.10.10
- 192.301.25.25
-
Which of the following commands will allow you to log into a remote machine?
- route
- ssh
- dig
- netstat
-
Which files contain user account information?
(choose two)
- /etc/passwd
- /etc/passwords
- /etc/shadow
- /etc/group
-
Which command will display the UID, GID and groups your current user belongs to?
- whoami
- Who
- about
- id
-
Each user belongs to at least one group.
True or False?
- True
- False
-
Which command will display the users that are currently logged in to the system?
- id
- who
- about
- whoami
-
Which command will display the groups that the root user belongs to?
- all
- all -t
- group -r
- id root
- groups -a
-
UIDs 1-499 are usually reserved for what kind of users?
- Are not used for user accounts, but for group accounts
- Log-in (human) users
- Remote log-in accounts
- System accounts, such as server processes
-
Which of the following options for the
useradd
command allows root to specify the UID to be associated with the account?- -u
- -g
- -M
- -G
-
Which command can be used to determine a user’s most recent log in?
- last
- login
- history
- shell
-
Which of the following files contains encrypted user password information?
- /etc/shadow
- /etc/group
- /etc/usr
- /etc/passwd
-
Which of the following options for the
useradd
command allows you to use a different primary group then the default?- -G
- -u
- -U
- -g
-
Which of the following commands can be used to modify a user?
- adduser
- usermod
- moduser
- useradd
-
Which of the following are methods for setting permissions using the
chmod
command?(choose two)
- letter
- primary
- symbolic
- octal
-
The
chown
command can be used to change the owner and group of a file.True or False?
- True
- False
-
The
chmod
command can be used on a file by:- The file owner and root
- The file owner
- Only root
- A user that belongs to the files current group
-
The “execute” permission is never set on files by default.
True or False?
- True
- False
-
The “sticky bit” permission…
- …changes the group ownership of existing files in a directory.
- …prevents others from removing files they don’t own from a common directory.
- …sets the group ownership of any new file created in a directory.
- …prevents others from overwriting files they don’t own in common directories.
-
The “setuid” permission…
- …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.
- …allows files in a directory to be manipulated as by the directory owner.
-
The “setgid” permission…
(choose two)
- …prevents the group owner of a file from being changed.
- …allows files created in a directory to be owned by the group that owns the directory.
- …allows a command to be run as the group owner of the file.
- …can only be set on files.
-
Which of the following
ls
commands, when executed, will only show information about the directory itself?(choose two)
- ls -h
- ld -d
- ld -a
- ls -ld