Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

The statement z=’expr 5/2’ would store in z a value

A. 2.5
B. 3
C. 2
Answer» D.
Discussion
2.

The difference between the commands ps –e and ps –a is

A. ps –e gives details of every process running in memory whereas ps –a gives output for all the process that you have launched
B. ps –e gives details of every process running in memory whereas ps –a gives details of all user processes
C. no difference , both give same output
D. none of the above
Answer» C. no difference , both give same output
Discussion
3.

The output of command banner “Unix shell programming” would be

A. a banner showing ‘unix’,’shell’ and ‘programming’ words displayed in separate lines
B. a banner showing ‘unix shell’ in one single line
C. nothing
D. a banner showing ‘unix shell programming’ in one line.
Answer» C. nothing
Discussion
4.

Which of the following options will be used to display number of blocks used by a file?

A. -c
B. -i
C. -d
D. -s
Answer» E.
Discussion
5.

Which of the following commands is used to identify the type of file by context?

A. ls
B. cat
C. file
D. more
Answer» D. more
Discussion
6.

Which command will be used with vi editor to insert text to left of cursor?

A. s
B. s
C. a
D. i
Answer» E.
Discussion
7.

Which of the following keys is used to replace a dingle character with new text

A. s
B. s
C. r
D. c
Answer» C. r
Discussion
8.

Which command is used to extract a specific columns from the file

A. cat
B. cut
C. grep
D. paste
Answer» C. grep
Discussion
9.

Which command is used to remove a directory

A. rd
B. rmdir
C. dldir
D. rdir
Answer» C. dldir
Discussion
10.

The command is used to compare the files is known as

A. comp
B. cmp
C. do
D. ccp
Answer» C. do
Discussion
11.

Which option will be used with sort command to start sorting after the nth column of the (m+1)th field

A. –m.n
B. +m.n
C. +n.m+1
D. +(m+1).n
Answer» C. +n.m+1
Discussion
12.

Which command is used to terminate a process

A. shutdown
B. haltsys
C. cancel
D. kill
Answer» E.
Discussion
13.

An until loop ensures that the statement within the loop get executed

A. only once
B. atleast once
C. not even once
D. none of the above
Answer» E.
Discussion
14.

The break statement is used to exit from

A. an if statement
B. a for loop
C. a program
D. none of the above
Answer» C. a program
Discussion
15.

Hierarchy decides which operator

A. is most important
B. is used first
C. is fastest
D. operates on largest numbers
Answer» C. is fastest
Discussion
16.

The expression expr -2 % 7 evaluates to

A. 2
B. -2
C. 0.285
Answer» C. 0.285
Discussion
17.

The expression expr -7 % 2evaluates to

A. 1
B. -1
C. -3.5
Answer» C. -3.5
Discussion
18.

The statement z=’expr 5/2’ would store in z a value

A. 2.5
B. 3
C. 2
Answer» D.
Discussion
19.

Which of the following is allowed in an arithmetic statement involving exprinstruction

A. []
B. {}
C. ()
D. none of the above
Answer» D. none of the above
Discussion
20.

Which of the following shows the correct hierarchy of arithmetic operations in shell

A. (),**,* or /, + or –
B. (), **, *,/,+,-
C. (),**,/,*,+,-
D. (),/,% or *,- or +
Answer» E.
Discussion
21.

On executing the command Shift $v

A. the positional parameters would be shifted by the value of the variable v
B. the positional parameters would be shifted by 1
C. the positional parameters would not be shifted at all
D. this command would result into an error
Answer» B. the positional parameters would be shifted by 1
Discussion
22.

On executing a statement set -3+1

A. $1 would be -3
B. $1 would be –
C. $1 would be set
D. this command would result into an error
Answer» E.
Discussion
23.

When we are executing a shell script the shell acts as

A. an interpreter
B. a compiler
C. an operating system
D. none of the above
Answer» B. a compiler
Discussion
24.

The shell metacharacter $# represents

A. total number of arguments supplied to the shell script
B. total number of files in the current directory
C. total number of users who have logged in
D. total number of processes running in the background
Answer» B. total number of files in the current directory
Discussion
25.

A null variable a can be created using

A. a=
B. a=’’
C. a=””
D. all the above
Answer» E.
Discussion
26.

Which of the following assignment is illegal

A. a=’cat file’
B. a=100 b=50
C. age=25
D. all the above
Answer» D. all the above
Discussion
27.

Which of the following assignments is illegal

A. a=’ls’
B. b=’ls –l’
C. c=’1972’
D. d=’who | grepaal’
Answer» D. d=’who | grepaal’
Discussion
28.

The escape sequence \033[4m is used to

A. underlying characters
B. mark them as bold
C. display them in reverse video
D. none of the above
Answer» C. display them in reverse video
Discussion
29.

.mailrc is the file

A. which stores the incoming mail
B. which is used to type the mail to be sent
C. which is invoked when the mail command is executed
D. which permits you to customize the vi environment
Answer» D. which permits you to customize the vi environment
Discussion
30.

The incoming mail of user with the login name aa12 is stored in the file

A. /usr/spool/mail/aa12
B. /usr/aa12/mbox
C. /spool/mail/aa12
D. /usr/aa12/.mbox
Answer» B. /usr/aa12/mbox
Discussion
31.

The message of the day is stored in a file called

A. /etc/profile
B. /etc/motv
C. .profile
D. autoexec.bat
Answer» C. .profile
Discussion
32.

To read the stale news the option available is

A. news –a
B. delete the file /usr/news
C. delete the file _news.time
D. delete the file .news_time
Answer» B. delete the file /usr/news
Discussion
33.

The command that unix offers to a user to find out whether he can send messages to a particular terminal are

A. finger and who
B. finger –mesg and who –t
C. finger –i and who –t
D. finger –i and who –t
Answer» E.
Discussion
34.

If the user has read a news item he cannot read it again because of creation of the file

A. _news_time
B. news.time
C. .news.time
D. .news_time
Answer» E.
Discussion
35.

For a person to receive messages he should have his terminal set to a parameter which will allow him receive messages.The command to set this parameter is

A. message –on
B. msg –o
C. mesg –y
D. message–y
Answer» D. message–y
Discussion
36.

Which of the following is not true

A. the at command permits you to receive messages only by mail
B. a person’s login name appears in the file at.allow if he is not allowed to use the at command
C. both are false
D. both are true
Answer» D. both are true
Discussion
37.

Which of the following is not true regards the kill command

A. super user can kill deamon processes
B. for sure kill the signal no is 9
C. there is no surety that the shell process will get killed by the command kill
D. using kill command you can kill other user’s processes too
Answer» B. for sure kill the signal no is 9
Discussion
38.

Which of the following is not true regarding the command $ nohup cat *.let | nohup sort >f1 &

A. the process would die if the user logs out before the command’s execution is over
B. if the user logs out the output of sort would be dtored in a file nohup.out
C. it is optional to give nohup before sort
D. this background process is also known as a deamon process
Answer» B. if the user logs out the output of sort would be dtored in a file nohup.out
Discussion
39.

The process id numbers of the processes vhand,bdflush,sched and init are

A. 1,2,3 and 4
B. 2,3,0 and 1
C. 3,4,1 and 2
D. 0,1,2 and 3
Answer» C. 3,4,1 and 2
Discussion
40.

The father of all processes is

A. root
B. sh
C. sched
D. init
Answer» D. init
Discussion
41.

The difference between the commands ps –e and ps –a is

A. ps –e gives details of every process running in memory whereas ps –a gives output for all the process that you have launched
B. ps –e gives details of every process running in memory whereas ps –a gives details of all user processes
C. no difference , both give same output
D. none of the above
Answer» C. no difference , both give same output
Discussion
42.

Which of following commands do not belong to multiple file editing commands

A. :n!
B. :q!
C. :rnew!
D. all the above
Answer» E.
Discussion
43.

The output of command banner “Unix shell programming” would be

A. a banner showing ‘unix’,’shell’ and ‘programming’ words displayed in separate lines
B. a banner showing ‘unix shell’ in one single line
C. nothing
D. a banner showing ‘unix shell programming’ in one line.
Answer» C. nothing
Discussion
44.

The command pwd gives

A. present working directory
B. password in encrypted form
C. password in decrypted form
D. none
Answer» B. password in encrypted form
Discussion
45.

Which of the following is not a unix command

A. cd
B. rm
C. pwd
D. del
Answer» E.
Discussion
46.

A Sticky bit applies to a file would mean that

A. no one can remove it
B. it would stick around in memory even when its execution is over
C. next time you login it would get executed on its own
D. none of the above
Answer» C. next time you login it would get executed on its own
Discussion
47.

The permission 746 can be represented as

A. rwxrwx- -x
B. rw- -w-r-x
C. rwxr-xr-x
D. rwxr- -rw–
Answer» E.
Discussion
48.

After typing the contents of file test created by you by giving the command cat>test you save the contents by

A. pressing the keys ctrl-c
B. typing save and pressing enter
C. pressing esc key
D. pressing ctrl-d
Answer» E.
Discussion
49.

The file for which we do not have write permission can be deleted using the command

A. rm-i file
B. rm-i file
C. rm-r-file
D. rm-f-file
Answer» E.
Discussion
50.

If there are three links for a file then the number of copies of the file would be

A. one
B. two
C. three
D. four
Answer» B. two
Discussion
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