Sam Houston State University

ECE MISC

NDG Linux Essentials 2.0 Final Exam (Chapter 9)

1)Which of the following are traits of a multiuser operating system? (choose three)

1. • 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
2. 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.
3. Channel 2 is:
   • STDALL
   • STDOUT
   • STDERR
   • STDIN
4. 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.
5. Which of the following commands can be used to scroll through a text file?

(choose two)

5. • cat
   • less
   • some
   • more
6. Which command can be used to print line numbers?
   • ln
   • nl
   • sort
   • num
7. Which are appropriate editors for writing shell scripts?

(choose two)

7. • LibreOffice Writer
   • vi
   • Firefox
   • nano
   • /bin/bash
8. Which of the following are correct about for and while loops?

(choose two)

8. • 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
9. 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”
10. What is the correct way to save the current directory to a

variable?

• pwd $A
• A=cwd
• A=`pwd`
• A=pwd
• pwd | $A

11. 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

12. Which of the following are valid CPU types for Intel-based

platforms? (choose two)

• 64-bit
• 24-bit
• 32-bit
• 48-bit

13. 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.

14. A division of a hard drive may be referred to as a                                                               .

• label
• block
• portion
• partition

15. The fdisk command is a tool used for working with the MBR

partitioned disks.

True or False?

• True
• False

16. Which of the following commands will display CPU information?

(choose two)

• cpuinfo
• lscpu
• showcpu
• lspic
• arch

17. The Process ID (PID) of the init process is:

• 100
• 0
• 1
• varies

18. What directory typically contains log files?

• /proc/loc
• /usr/log
• /log
• /var/log

19. The /var directory has files that change over time.

True or False?

• True
• False

20. 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

21. Which directory is the root of the filesystem?

• /sys
• /
• /var
• /home
• /root

22. 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.

23. Only servers have hostnames.

True or False?

• True
• False

24. 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

25. Which of the following commands will allow you to log into a

remote machine?

• route
• ssh
• dig
• netstat

26. Which files contain user account information?

(choose two)

• /etc/passwd
• /etc/passwords

• /etc/shadow
• /etc/group

27. Which command will display the UID, GID and groups your

current user belongs to?

• whoami
• Who
• about
• id

28. Each user belongs to at least one group.

True or False?

• True
• False

29. Which command will display the users that are currently logged

in to the system?

• id
• who
• about
• whoami

30. Which command will display the groups that the root user

belongs to?

• all
• all -t
• group -r
• id root
• groups -a

31. 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

32. 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

33. Which command can be used to determine a user’s most

recent log in?

• last
• login
• history

• shell

34. Which of the following files contains encrypted user password

information?

• /etc/shadow
• /etc/group
• /etc/usr
• /etc/passwd

35. Which of the following options for the useradd command allows

you to use a different primary group then the default?

• -G
• -u
• -U
• -g

36. Which of the following commands can be used to modify a

user?

• adduser
• usermod
• moduser
• useradd

37. Which of the following are methods for setting permissions

using the chmod command? (choose two)

• letter
• primary
• symbolic
• octal

38. The chown command can be used to change the owner and

group of a file.

True or False?

• True
• False

39. 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

40. The “execute” permission is never set on files by default.

True or False?

• True