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Instructions

Total Questions 20
Each question carry 1 mark
Must answer all the questions (otherwise report card will not be generated)
If you dont want to take a test, simply click the check answers button and view all the answers with explanations
Do Not Refresh the Page
No Time Limit
Good Luck :)

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1. Which is the correct word for the description here? "Used to refer to the physical screen you are currently looking at as a user?"

A.
Terminal
B.
Console
C.
Shell
D.
Interface

Correct Answers :

[B]

Explanation :

The console is the screen you are working from. On the console, a terminal is started as the working environment. In the terminal, a shell is operational to interpret the commands you are typing.

2. Which is the correct word for the description here? “The environment from which a shell is used where users can enter their commands”

A.
Terminal
B.
Console
C.
Shell
D.
Interface

Correct Answers :

[A]

Explanation :

The console is the screen you are working from. On the console, a terminal is started as the working environment. In the terminal, a shell is operational to interpret the commands you are typing.

3. Which is the correct word for the description here? “The environment that offers a command line on which users type the commands they want to be using”

A.
Terminal
B.
Console
C.
Shell
D.
Interface

Correct Answers :

[C]

Explanation :

The console is the screen you are working from. On the console, a terminal is started as the working environment. In the terminal, a shell is operational to interpret the commands you are typing.

4. Which device file is associated with the virtual console that is opened after using the Alt+F6 key sequence?

A.
/dev/console6
B.
/dev/tty6
C.
/dev/vty6
D.
/dev/pts/6

Correct Answers :

[B]

Explanation :

The six virtual consoles that are available on Linux by default are numbered /dev/tty1 through /dev/tty6. The device /dev/pts/6 is used to refer to the sixth pseudo terminal, which is created by opening six terminal windows in a graphical environment.

5. Which of the following methods will open a pseudo terminal device?

A.
Log in using an SSH session
B.
Use Alt+F2 to open a new nongraphical login
C.
Right-click the graphical desktop and select Open in Terminal
D.
Enter your username and password on a nongraphical console

Correct Answers :

[A, B]

Explanation :

A pseudo terminal device is created when opening new terminals using SSH or from the graphical interface.

6. Which statement about privileged users (root) is true?

A.
A privileged user is a user who has access to a Linux system.
B.
A privileged user with no access permissions can do nothing at all.
C.
Privileged users are not restricted in any way.
D.
On every server, at least one privileged user must be manually created while installing the server.

Correct Answers :

[C]

Explanation :

Privileged users are opposed to unprivileged users. A privileged user can execute tasks in kernel space, without any further restriction. By default, only the user root exists as privileged user.

7. On a default installation of a RHEL 7 server, which group does the user typically need to be a member of to be able to use sudo to run all administration commands?

A.
admin
B.
root
C.
sys
D.
wheel

Correct Answers :

[D]

Explanation :

In the sudo configuration file, all members of the group wheel by default get access to all administrator tasks.

8. There are different ways that users can run tasks with root permissions. Which of the following is not one of them?

A.
sudo
B.
runas
C.
su
D.
PolicyKit

Correct Answers :

[B]

Explanation :

The runas command does not exist on Linux.

9. Which of the following is used to store the hash of the user's encrypted password?

A.
/etc/passwd
B.
/etc/shadow
C.
/etc/shadow
D.
/etc/secure

Correct Answers :

[B]

Explanation :

The hashed user passwords are stored in /etc/shadow.

10. Which configuration file should you change to set the default location for all new user home directories?

A.
/etc/login.defaults
B.
/etc/login.defs
C.
/etc/default/useradd
D.
/etc/default/login.defs

Correct Answers :

[C]

Explanation :

The file /etc/default/useradd is read for default settings when new user accounts are created.

11. A user who is a member of several groups wants to change default group ownership for all newly created files and set it to the group sales. Which command would do that?

A.
chgrp sales
B.
setgid sales
C.
newgrp sales
D.
setgroup sales

Correct Answers :

[C]

Explanation :

The newgrp command is used to set the effective primary group, which will effect default group ownership on new files until the current shell session is ended. The chgrp command is used to set the group owner of an existing file. Chgrp is not related to any user account and it affects newly created files only.

12. Which command enables you to find all files on a system that are owned by user linda?

A.
find / -user linda
B.
find / -uid linda
C.
ls -l | grep linda
D.
ls -R | find linda

Correct Answers :

[A]

Explanation :

The find / -user linda command searches all files that are owned by user linda. Notice that find also has a -uid option that allows you to locate files based on a specific UID setting. This does not allow you to search files based on a username, but it will let you find files based on the UID of a specific user.

13. Which of the following commands does not set group ownership to the group sales for the file myfile?

A.
chgrp sales myfile
B.
chown .sales myfile
C.
chgrp myfile sales
D.
chown :sales myfile

Correct Answers :

[C]

Explanation :

chgrp myfile sales does not set group ownership for the file myfile. The order in this command is wrong; chgrp first needs the name of the group, followed by the name of the owner that needs to be set.

14. Which of the following would be used to allow read and write permissions to the user and group owners and no permissions at all to anyone else?

A.
chown 007 filename
B.
chmod 077 filename
C.
chmod 660 filename
D.
chmod 770 filename

Correct Answers :

[C]

Explanation :

When used in relative mode, the three digits are used to specify user, group, and others permissions. The value 6 is used to apply read and write.

15. Which command enables you to set the SGID permission on a directory?

A.
chmod u+s /dir
B.
chmod g-s /dir
C.
chmod g+s /dir
D.
chmod 1770 /dir

Correct Answers :

[C]

Explanation :

The chmod g+s /dir command adds (+) the SGID permission to /dir. Answer A ( chmod u+s ) adds SUID to the directory, with chmod g-s the SGID permission would be removed, and the 1 in chmod 1770 /dir would set sticky bit and not SGID.

16. Which of the following IP addresses belong to the same network?
I. 192.168.4.17/26
II. 192.168.4.94/26
III. 192.168.4.97/26
IV. 192.168.4.120/26

A.
I and II
B.
II and III
C.
III and IV
D.
II, III, and IV

Correct Answers :

[D]

Explanation :

Based on the /27 subnet mask, the networks are 192.168.4.0, 192.168.4.64, 192.168.4.128, and 192.168.4.192. That means that IP addresses II, III, and IV belong to the same network.

17. Which of the following is not a private IP address?

A.
10.10.10.10
B.
169.254.11.23
C.
172.19.18.17
D.
192.168.192.192

Correct Answers :

[B]

Explanation :

The 169.254.0.0 network address does not belong to the private address ranges, which are 10.0.0.0/8, 172.168.0.0/12, and 192.168.0.0/16.

18. Which of the following would be the default network interface name on a RHEL 7 system?

A.
p6p1
B.
eth0
C.
eno1677783
D.
e0

Correct Answers :

[C]

Explanation :

By default, the network device names are based on the device type, location, and identification.

19. Which command shows the recommended way to display information about the network interface as well as its IP configuration?

A.
ifconfig -all
B.
ipconfig
C.
ip link show
D.
ip addr show

Correct Answers :

[D]

Explanation :

Use of the ifconfig command is deprecated; use the ip command instead. The ip addr show command shows information about the state of the interface as well as the current IP address assignment.

20. Which statement about NetworkManager is not true?

A.
It is safe to disable NetworkManager and work with the network service instead.
B.
NetworkManager manages network connections that are applied to network interfaces.
C.
NetworkManager has a text based user interface with the name nmtui.
D.
NetworkManager is the default service to manage networking in RHEL 7.

Correct Answers :

[A]

Explanation :

The network service should not be used anymore in RHEL 7.

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