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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 5 of 7

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Q41.
Which of the following set of Unix commands will always display “WELCOME” ?

a.

export title=WELCOME; Echo $title

b.

title = WELCOME; export $ title ; sh –c “echo $title”

c.

title = WELCOME; export title ; sh –c “echo $title”

d.

title = WELCOME; echo $title

Discuss
Answer: (c).title = WELCOME; export title ; sh –c “echo $title”
Q42.
Which of the following shell scripts will produce the output “my first script” ?

a.

for i in my first script { echo –i $i}

b.

for my first script; do echo –n; done

c.

for i in my first script; do echo –i $i; done

d.

for n in my first script; do echo –i $i; done

Discuss
Answer: (c).for i in my first script; do echo –i $i; done
Q43.
Which of the following statements is not true for UNIX Operating System ?

a.

Major strength of UNIX Operating System is its open standards which enabled large number of organizations ranging from academicia to industries to participate in its development.

b.

UNIX kernel uses modules with well specified interfaces and provides advantages like simplified testing and maintenance of kernel. It has better extensibility as the kernel is not monolithic.

c.

UNIX is kernel based operating system with two main components viz. process management subsystem and file management subsystem.

d.

All devices are represented as files which simplify the management of I/O devices and files. The directories structure used is directed acyclic graph.

Discuss
Answer: (b).UNIX kernel uses modules with well specified interfaces and provides advantages like simplified testing and maintenance of kernel. It has better extensibility as the kernel is not monolithic.
Q44.
Consider the following UNIX command:

sort < in > temp; head -30 < temp; rm temp

Which of the following functions shall be performed by this command?

a.

Sort, taking the input from "temp", prints 30 lines from temp and delete the file temp

b.

Sort the file "temp", removes 30 lines from temp and delete the file temp

c.

Sort, taking the input from "in" and writing the output to "temp" then prints 30 lines from temp on terminal. Finally "temp" is removed

d.

Sort, taking the input from 'temp" and then prints 30 lines from "temp" on terminal. Finally "temp" is removed

Discuss
Answer: (c).Sort, taking the input from "in" and writing the output to "temp" then prints 30 lines from temp on terminal. Finally "temp" is removed
Q45.
The mv command changes

a.

the inode

b.

the inode-number

c.

the directory entry

d.

both the directory entry and the inode

Discuss
Answer: (c).the directory entry
Q46.
A UNIX file system has 1 KB block size and 4-byte disk addresses. What is the maximum file size if the inode contains ten direct block entries, one single indirect block entry, one double indirect block entry and one triple indirect block entry?

a.

30 GB

b.

64 GB

c.

16 GB

d.

1 GB

Discuss
Answer: (c).16 GB
Q47.
A user level process in Unix traps the signal sent on a Ctrl + C input and has a signal handling routine that saves appropriate files before terminating the process. When a Ctrl + C input is given to this process, what is the mode in which the signal handling routine executes ?

a.

User mode

b.

Kernel mode

c.

Superuser mode

d.

Privileged mode

Discuss
Answer: (b).Kernel mode
Q48.
Which one of the following options is not a shell in UNIX system?

a.

Bourne Shell

b.

C Shell

c.

Net Shell

d.

Korn Shell

Discuss
Answer: (c).Net Shell
Q49.
Which command allows you to view your file 24 lines at a time ?

a.

More

b.

Cat

c.

Pg

d.

None of the above

Discuss
Answer: (a).More
Q50.
The Unix command used to find out the number of characters in a file is

a.

nc

b.

wc

c.

chcnt

d.

lc

Discuss
Answer: (b).wc
Page 5 of 7

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