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 command to count the number of files in the current directory by using pipes, is

A. ls | wc
B. ls -l | ws -l
C. ls | wc -w
D. ls | ws -c
Answer» D. ls | ws -c
Discussion
2.

Which of the following commands is used to get directory one level up?

A. cd
B. cd ..
C. cd/
D. chdir
Answer» C. cd/
Discussion
3.

Which command is used to list out all the hidden files along with the other files?

A. ls -l
B. ls -x
C. ls -f
D. ls -a
Answer» E.
Discussion
4.

Which command is used with vi editor to search a pattern in the forward direction?

A. /
B. ?
C. //
D. ??
Answer» B. ?
Discussion
5.

Which command is used to print a file?

A. print
B. prn
C. pg
D. lp
Answer» E.
Discussion
6.

The cp command uses:

A. standard input file
B. standard output file
C. both input and output file
D. neither standard input nor standard output file
Answer» E.
Discussion
7.

Which command is used to terminate a process?

A. shutdown
B. haltsys
C. cancel
D. kill
Answer» E.
Discussion
8.

Which of the following commands is used to display your working directory?

A. second
B. fourth
C. third
D. first
Answer» D. first
Discussion
9.

While working with mail command, which command is used to save mail i a separate file?

A. s
B. r
C. w
D. d
Answer» B. r
Discussion
10.

Which column contains all details of the permissions of a file when you issue the ls - l command?

A. second
B. fourth
C. third
D. first
Answer» E.
Discussion
11.

The second set of the three permissions (r-) indicates that

A. group has read permission only
B. other has read permission only
C. owner has read permission only
D. group has write permission only
Answer» B. other has read permission only
Discussion
12.

Which command is used to make all files and sub-directories in the directory (progs) executable by all users?

A. chmod -r a+x progs
B. chmod -r 222 progs
C. chmod -1 a+x progs
D. chmod -x a+x progs
Answer» B. chmod -r 222 progs
Discussion
13.

Which option will be used with touch command to change the access time?

A. -a
B. -b
C. -t
D. -h
Answer» B. -b
Discussion
14.

The filed separator in cut command is specified with

A. -a option
B. -d option
C. -r option
D. -x option
Answer» C. -r option
Discussion
15.

Which of the following commands is used to obtain a list of all files by modification time?

A. ls -1
B. ls -t
C. ls -i
D. ls -r
Answer» C. ls -i
Discussion
16.

Which of the following directories contain all the Ales created by a user, including his login directory?

A. /tmp
B. /etc
C. /usr
D. /dev
Answer» D. /dev
Discussion
17.

Which of the following command addresses all users who are currently hooked on?

A. write
B. mail
C. wall
D. mesg
Answer» D. mesg
Discussion
18.

Which option will be used with ps command to slow the entire command line of the process being run?

A. -4
B. -f
C. -1
D. -4
Answer» C. -1
Discussion
19.

Which of the following special shell variables is used to process number of the last background job?

A. $!
B. $#
C. $*
Answer» B. $#
Discussion
20.

In vi editor, forward search is performed using the command.

A. :pat
B. :pat
C. /pat
D. all of the above
Answer» E.
Discussion
21.

Which of the following commands is used to list contents of directories?

A. ls
B. lp
C. dir
D. tar
Answer» B. lp
Discussion
22.

Which command is used to count just the number of characters in a file?

A. wc - 1
B. wc -c
C. wc -w
D. wc -r
Answer» C. wc -w
Discussion
23.

The agency that sits between the user and the UNIX system is called the

A. logic
B. profile
C. shell
D. erxc
Answer» D. erxc
Discussion
24.

Which of the following commands is used to update access and modification times of a file?

A. grep
B. wc
C. touch
D. cat
Answer» D. cat
Discussion
25.

Which symbol is used to separate more than one command in the same command line?

A. $
B. #
C. :
D. ;
Answer» E.
Discussion
26.

The command which transcribes the standard input to the standard output and also makes a copy of the same in a file is

A. tee
B. tr
C. sort
D. grep
Answer» B. tr
Discussion
27.

Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters?

A. cat emp[!0-9]
B. more [emp][!0-9]
C. cat emp[x-z]
D. cat emp[a-z]
Answer» B. more [emp][!0-9]
Discussion
28.

Which of the following keys is used to move the cursor to the end of the paragraph.

A. }
B. {
C. |
D. $
Answer» B. {
Discussion
29.

If you are to use [Control-c] as the interrupt key instead of [Del], then you will have to use

A. tty ^c
B. stty intr \\^c
C. stty echoe
D. stty echo \\^a
Answer» C. stty echoe
Discussion
30.

Which of the following files will displayed by this command cat *ch*

A. patch
B. catch
C. .ch
D. all of the above
Answer» E.
Discussion
31.

Which of the following commands is used to display the directory attributes rather than its contents?

A. ls -1 -d
B. ls -1
C. ls -x
D. ls -f
Answer» B. ls -1
Discussion
32.

Which command is used to remove the read permission of the file 'note' from both the group and others?

A. chmod go+r note
B. chmod go+rw note
C. chmod go-x note
D. chmod go-r, 4-x note
Answer» E.
Discussion
33.

Which command sends the word count of the file infile to the newfile.

A. wc infile >newfile
B. wc <infile >newfile
C. wc infile - newfile
D. wc infile | newfile
Answer» B. wc <infile >newfile
Discussion
34.

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

A. s
B. s
C. r
D. c
Answer» C. r
Discussion
35.

A pipe a mechanism that allow a stream of data between to be passed between……..

A. reader and writer process
B. reader process
C. writer process
D. none of these
Answer» B. reader process
Discussion
36.

System call mknod creates a

A. new file
B. new directory
C. new binary file
D. none of these
Answer» C. new binary file
Discussion
37.

Which command is used to display the top of the file?

A. cat
B. head
C. more
D. grep
Answer» C. more
Discussion
38.

The file that stores an integer as a sequence of characters is a

A. text file
B. data file
C. binary file
D. core
Answer» B. data file
Discussion
39.

Files that can store data in the same format as used in program are called

A. binary files
B. source file
C. text file
D. core
Answer» B. source file
Discussion
40.

Which command is used to display and create files?

A. cat
B. ed
C. vi
D. lyrix
Answer» B. ed
Discussion
41.

Which is the earliest and most widely used shell that came with the UNIX system?

A. c shell
B. korn shell
C. bourne shell
D. smith shell
Answer» D. smith shell
Discussion
42.

Which of the following system calls,does not return control to the calling point, on termination?

A. fork
B. exec
C. ioct1
D. longjmp
Answer» C. ioct1
Discussion
43.

When the read system call encounters EOF ,it returns

A. some positive integer
B. some negative integer
C. -1
Answer» D.
Discussion
44.

Which command is used to display the characteristics of a process?

A. pid
B. ps
C. du
D. au
Answer» E.
Discussion
45.

Command compares two files byte by byte and displays the first mismatch.

A. cmp
B. comp
C. cmap
D. none of these
Answer» B. comp
Discussion
46.

The cat command is used to

A. print a file
B. display a file
C. capture a file
D. copy a file
Answer» C. capture a file
Discussion
47.

Which of the following are not system calls?

A. chmod
B. open
C. lseek
D. getc
Answer» E.
Discussion
48.

Which command will be used with vi editor to move back to the beginning of a word?

A. b
B. e
C. a
D. w
Answer» B. e
Discussion
49.

Which set option is used with vi editor to display line numbers on screen?

A. nm
B. nu
C. ic
D. li
Answer» C. ic
Discussion
50.

In a system ,if 5 people are currently using vi editor ,then the number of corresponding processes will be

A. 1
B. 5
C. 3
Answer» C. 3
Discussion