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Welcome to the UNIX System MCQs Page

Dive deep into the fascinating world of UNIX System with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of UNIX System, a crucial aspect of UGC CBSE NET Exam. In this section, you will encounter a diverse range of MCQs that cover various aspects of UNIX System, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within UGC CBSE NET Exam.

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Check out the MCQs below to embark on an enriching journey through UNIX System. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of UGC CBSE NET Exam.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of UNIX System. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

UNIX System MCQs | Page 1 of 7

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Q1.
In UNIX, which of the following command is used to set the task priority ?

a.

init

b.

nice

c.

kill

d.

PS

Discuss
Answer: (b).nice
Q2.
Which of the following flags are set when ‘JMP’ instruction is executed ?

a.

SF and CF

b.

AF and CF

c.

All flags

d.

No flag is set

Discuss
Answer: (d).No flag is set
Q3.
Everything below the system call interface and above the physical hardware is known as ______. 

a.

Kernel

b.

Bus

c.

Shell

d.

Stub

Discuss
Answer: (a).Kernel
Q4.
Linux operating system uses

a.

Affinity Scheduling

b.

Fair Preemptive Scheduling

c.

Hand Shaking

d.

Highest Penalty Ratio Next

Discuss
Answer: (b).Fair Preemptive Scheduling
Q5.
In Unix, how do you check that two given strings a and b are equal?

a.

test $a -eq $b

b.

test $a -equal $b

c.

test $a = $b

d.

both a and c

Discuss
Answer: (d).both a and c
Q6.
The directory structure used in Unix file system is called

a.

Hierarchical directory

b.

Tree structured directory

c.

Directed acyclic graph

d.

Graph structured directory

Discuss
Answer: (a).Hierarchical directory
Q7.
Which statement  is not true about process 0 in the Unix operating system?

a.

Process 0 is called init process

b.

Process 0 is not created by fork system call

c.

After forking process 1, process O becomes swapper process

d.

Process 0 is a special process created when system boots

Discuss
Answer: (a).Process 0 is called init process
Q8.
Which or the following commands would return process_id of sleep command?

a.

Sleep 1 and echo $?

b.

Sleep 1 and echo #

c.

Sleep 1 and echo $*

d.

Sleep 1 and echo $!

Discuss
Answer: (b).Sleep 1 and echo #
Q9.
What does the following command do ?
grep − vn  "abc" x

a.

It will print all of the lines in the file x that match the search string "abc"

b.

It will print all of the lines in file x that do not match the search string "abc"

c.

It will print total no of the lines in file x that match the search string "abc"

d.

It will print the specific line numbers of file x in which there is a match for the string "abc"

Discuss
Answer: (a).It will print all of the lines in the file x that match the search string "abc"
Q10.
The Unix Kernel maintains two key data structures related to processes, the progress table and the user structure. Which of following information is not the part of user

a.

File descriptor table

b.

System call state

c.

Scheduling parameters

d.

Kernel stack

Discuss
Answer: (c).Scheduling parameters
Page 1 of 7

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