OS Iitu Quiz
- 1.
The user and group number of root is 0
- A.
True
- B.
False
Correct Answer
A. True -
- 2.
Enter the name of file that contains the user accoutn information for your system
- A.
/etc/passwd
- B.
/etc/password
- C.
/etc/shadow
- D.
/etc/gshadow
Correct Answer
A. /etc/passwd -
- 3.
Which file contains passwords for your groups?
- A.
/etc/passwd
- B.
/etc/password
- C.
/etc/shadow
- D.
/etc/gshadow
Correct Answer
D. /etc/gshadow -
- 4.
/etc/passwd contains password related information for accounts
- A.
True
- B.
False
Correct Answer
B. False -
- 5.
One account has elevated privileges to issue any command, access any file, and peform every function
Correct Answer
Root, root, superuser, Superuser - 6.
Choose the correct format of /etc/passwd file
- A.
Name:UID:password:group_number:comment:directory:start_program
- B.
UID:name:password:group_number:comment:directory:start_program
- C.
Name:password:UID:group_number:comment:directory:start_program
- D.
Group_number:name:UID:password:comment:directory:start_program
Correct Answer
C. Name:password:UID:group_number:comment:directory:start_program -
- 7.
We can use both chown and chgrp to change the group ownership
- A.
True
- B.
False
Correct Answer
A. True -
- 8.
Which utility is used to modify file /etc/sudoers?
- A.
Psw
- B.
Su
- C.
Visudo
- D.
Gshadow
Correct Answer
C. Visudo -
- 9.
Choose the correct format of /etc/gshadow file
- A.
UID:Name:Password:Admins:Users
- B.
Name:Password:Admins:Users
- C.
Name:UID:Password:Users:Admins
- D.
Password:Admins:Users:Name
Correct Answer
B. Name:Password:Admins:Users -
- 10.
What is the alternative of 543 permission?
- A.
R-xr---wx
- B.
R-xrw-r--
- C.
R--w-x--x
- D.
Rw-r-x-wx
Correct Answer
A. R-xr---wx -
- 11.
How can we list directories with hidden files?
- A.
Ls -t
- B.
Ls -a
- C.
Ls -l
- D.
Ls -r
Correct Answer
B. Ls -a -
- 12.
How can we list particular directories?
- A.
Ls -t
- B.
Ls -r
- C.
Ls -a
- D.
Ls -d
Correct Answer
D. Ls -d -
- 13.
What is the umask for the definitions below?- read, execute for owner- read for group- write, execute for others
- A.
234
- B.
013
- C.
665
- D.
777
- E.
631
Correct Answer
A. 234 -
- 14.
We should use chmod to set permission for newly created files
- A.
True
- B.
False
Correct Answer
B. False -
- 15.
How can you add read and execute permission to owner for file quiz.txt
- A.
Chmod u+rx quiz.txt
- B.
Chmod o=rx quiz.txt
- C.
Chmod u-rx quiz.txt
- D.
Chmod o+rx quiz.txt
- E.
Umask o+rx quiz.txt
Correct Answer
A. Chmod u+rx quiz.txt -
- 16.
We can use both gzip -d and gunzip to decompress file
- A.
True
- B.
False
Correct Answer
A. True -
- 17.
Input the number equivalent of rw-r-x--x permission
- A.
651
- B.
777
- C.
541
- D.
661
- E.
415
Correct Answer
A. 651 -
- 18.
What is the first program that is executed after system boot up?
Correct Answer
Init, init - 19.
Foreground processes doesn't expect user input
- A.
True
- B.
False
Correct Answer
B. False -
- 20.
What are the processes that are initialized and controlled through a terminal session?
- A.
Foreground
- B.
Background
- C.
Interactive
Correct Answer(s)
A. Foreground
C. Interactive -
- 21.
The parent process of all process in Linux called root
- A.
True
- B.
False
Correct Answer
B. False -
- 22.
Which of these funtions has security risks?
- A.
Fork()
- B.
System()
- C.
Exec()
Correct Answer
B. System() -
- 23.
Select chains for NAT table
- A.
INPUT
- B.
OUTPUT
- C.
PREROUTING
- D.
FORWARD
- E.
POSTROUTING
Correct Answer(s)
B. OUTPUT
C. PREROUTING
E. POSTROUTING -
- 24.
How many built-in-rules do iptables have?
- A.
3
- B.
4
- C.
1
- D.
2
Correct Answer
A. 3 -
- 25.
Select chains for mangle table
- A.
INPUT
- B.
OUTPUT
- C.
FORWARD
- D.
POSTROUTING
- E.
PREROUTING
Correct Answer(s)
A. INPUT
B. OUTPUT
C. FORWARD
D. POSTROUTING
E. PREROUTING -
- 26.
Select chains for filter table
- A.
FORWARD
- B.
INPUT
- C.
OUTPUT
- D.
POSTROUTING
Correct Answer(s)
A. FORWARD
B. INPUT
C. OUTPUT -
- 27.
REJECT target works like the DROP target, but doesn't return an error message
- A.
True
- B.
False
Correct Answer
B. False -
- 28.
When using command line arguments, what does $$ return?
- A.
Name of running script
- B.
Array containing all parameters
- C.
Word containing all parameters
- D.
Process ID of running script
- E.
Number of passed parameters
Correct Answer
D. Process ID of running script -
- 29.
What are the permission types a UNIX file can be assigned
- A.
Read
- B.
Write
- C.
Execute
- D.
User
- E.
Group
- F.
Deploy
Correct Answer(s)
A. Read
B. Write
C. Execute -
- 30.
Open source is free software, software that the licensee can use without paying a license fee
- A.
True
- B.
False
Correct Answer
B. False -
- 31.
Which of the following distribution designed for advanced Linux users?
- A.
Red Hat
- B.
Gentoo
- C.
Fedora
- D.
Debian
- E.
Slackware
Correct Answer
B. Gentoo -
- 32.
Which permission belongs to 452 umask?
- A.
R---xrw-
- B.
Rw-r-xrwx
- C.
Rwxrw-r-x
- D.
-wx-w-r-x
Correct Answer
D. -wx-w-r-x -
- 33.
Which of the following belong(s) to system level interface
- A.
Shell
- B.
Icons, windows, buttons
- C.
Applications
- D.
Invoked from programs
Correct Answer
D. Invoked from programs -
- 34.
What will you write in order to check whether the directory with name "quizzes" exist or not?Format: option dirname
Correct Answer
-d quizzes - 35.
What will be the output if we will run the following script: ./quiz.sh 4 3Filename: quiz.sh
- A.
C
- B.
Script won't run because of error
- C.
A
- D.
B
Correct Answer
D. B -
- 36.
What will be the output if we will run script: ./quiz.sh 200Filename: quiz.sh
- A.
B
- B.
A
- C.
C
- D.
Script won't run because an error
Correct Answer
D. Script won't run because an error -
- 37.
If we want the variable to be available to the other scripts, which command do we need?
Correct Answer
export, Export, EXPORT - 38.
What is an Operating System?
- A.
A collection of software that manages computer hardware resources and provides common services for computer programs
- B.
It acts as an intermediary between a user and the computer system
- C.
A hardware layer to abstract away and manage details of software resources
- D.
The OS is a vital component of the system hardware in a computer system
Correct Answer(s)
A. A collection of software that manages computer hardware resources and provides common services for computer programs
B. It acts as an intermediary between a user and the computer system -
- 39.
What are the levels of access control on UNIX systems?
- A.
Root
- B.
Other
- C.
User
- D.
Group
- E.
Administrator
- F.
Administrator
Correct Answer(s)
A. Root
C. User -
- 40.
What is the alternative of 361 permission?
- A.
Rw-r-x-wx
- B.
-wxrw---x
- C.
Rw-rw-r-x
- D.
Rw-r-x-x
Correct Answer
B. -wxrw---x -
- 41.
What is PID of init process?
- A.
3
- B.
4
- C.
5
- D.
1
- E.
0
Correct Answer
D. 1 -
- 42.
Select an(the) example(s) of free software
- A.
UTorrent Google Chrome
- B.
Linux
- C.
Mozilla Firefox FreeBSD KDE
- D.
Open Office
Correct Answer
A. UTorrent Google Chrome -
- 43.
Which permission belongs to 260 umask
- A.
R-xr-xr-x
- B.
R-x--xrwx
- C.
Rw---xr-x
- D.
R-x---rw-
Correct Answer
B. R-x--xrwx -
- 44.
Linux developed by
- A.
Andrew Tannenbaum
- B.
Bill Gates
- C.
Linus Torvalds
- D.
Mark Zyckerberg
Correct Answer
C. Linus Torvalds -
- 45.
Which signal is sent to a process when its controlling terminal is closed?
- A.
SIGINT
- B.
SIGKILL
- C.
SIGBUS
- D.
SIGSTP
- E.
SIGHUP
Correct Answer
E. SIGHUP -
- 46.
What is the alternative of 421 permission?
- A.
Rw-r-x--x
- B.
R-xrw-wx
- C.
Rw-w-x--x
- D.
R---w---x
Correct Answer
D. R---w---x -
- 47.
How can you list all available signals?
Correct Answer
kill -l - 48.
What you should write in order to edit the list of cronjobs?
Correct Answer
sudo crontab -e, crontab -e - 49.
Which of the following belongs to commercial business distribution used mainly for internet servers?
- A.
Red Hat
- B.
Fedora
- C.
Gentoo
- D.
Debian
- E.
OpenSuse
Correct Answer
A. Red Hat -
- 50.
Which line executes the script chech_status.sh on 10th June 08:30 AM
- A.
30 08 10 06 * check_status.sh
- B.
10 06 30 08 * check_status.sh
- C.
30 08 06 10 * check_status.sh
- D.
08 30 10 06 * check_status.sh
Correct Answer
A. 30 08 10 06 * check_status.sh -
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Current Version
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Dec 13, 2017Quiz Edited by
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Dec 12, 2017Quiz Created by
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