Explore topic-wise MCQs in Computer Science.

This section includes 139 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science knowledge and support exam preparation. Choose a topic below to get started.

101.

What command is used to set user and group quotas?

A. /sbin/usrquota
B. /sbin/edquota
C. /sbin/quotaon
D. /sbin/quota
Answer» C. /sbin/quotaon
102.

What sign is used to erase or kill an entire line you have typed and start you are on a new line (but not display a new prompt)?

A. !
B. $
C. #
D. @
Answer» E.
103.

What command is used with vi editor to save file and remain in the editing mode?

A. x
B. q!
C. :w
D. :q
Answer» D. :q
104.

To build a modularized kernel, the kernel-headers and kernel-source packages must first be installed. Where will you find the kernel-headers and kernel-source?

A. /usr/local
B. /usr/src/linux
C. /usr/sre/redhat
D. /usr/bin
Answer» C. /usr/sre/redhat
105.

What service is used to translate domain names to IP addresses?

A. NFS
B. SMB
C. NIS
D. DNS
Answer» E.
106.

What command is used to add printing jobs to the queue?

A. lpd
B. lpr
C. lpq
D. lpc
Answer» C. lpq
107.

How can you navigate around virtual consoles?

A. Alt+Function Key
B. Ctrl+Function Key
C. Ctrl+Alt+Del
D. Alt+a+w+Function Key
Answer» B. Ctrl+Function Key
108.

The 32-bit internet address 10000000 00001010 00000010 00011110 will be written in dotted decimal notation as

A. 128.10.2.30
B. 210.20.2.64
C. 164.100.9.61
D. 148.20.2.30
Answer» B. 210.20.2.64
109.

What command is used with vi editor to append text at end of line?

A. I
B. i
C. a
D. A
Answer» E.
110.

What type of addressing format is used by Class A network.

A. Net.Net.Net.Node
B. Net.Net.Node.Node
C. Net.Node.Net.Node
D. Net.Node.Node.Node
Answer» E.
111.

In OSI network architecture, the dialogue control and token management are responsible of

A. data link layer
B. transport layer
C. network layer
D. session layer
Answer» E.
112.

The command chmod 761 letter is equivalent to

A. chmod 4=7, g = 6, o = 1 letter
B. chmod a = 761 letter
C. chmod u = rwx, g = rw, o = x letter
D. chmod 167 letter
Answer» D. chmod 167 letter
113.

What project is currently developing X server support?

A. XFree86 Project, Inc.
B. RHAD Labs
C. GNOME Project
D. All of the above
Answer» B. RHAD Labs
114.

What command is used to count the number of files in the current directory by using pipes?

A. ls | ws - c
B. ls | wc - w
C. ls | wc - l
D. ls | wc
Answer» D. ls | wc
115.

What sign is used to back up over typing errors in vi?

A. !
B. $
C. #
D. @
Answer» D. @
116.

Which of the following command can you execute to count the number of lines in a file?

A. lc
B. wc - l
C. cl
D. count
Answer» C. cl
117.

How many primary partitions can exist on one drive?

A. 16
B. 4
C. 2
D. 1
Answer» C. 2
118.

What command is used to copy a file?

A. tar
B. cpio
C. cp
D. copy
Answer» D. copy
119.

How many networks and nodes per network, are allowed by the Class B network?

A. 127 networks and 16,777,216 nodes per network
B. 16,384 networks and 65,534 nodes per network
C. 2,097,152 networks and 254 nodes per network
D. All of the above
Answer» C. 2,097,152 networks and 254 nodes per network
120.

What command is used with vi editor to move forward to the end of a word?

A. c
B. d
C. b
D. e
Answer» E.
121.

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

A. ??
B. //
C. ?
D. /
Answer» E.
122.

How could you install the file ipchains-1.3.9-5.i386.rpm?

A. rpm -qip ipchains
B. rpm -Uvh ipchains
C. rpm -i ipchains* .i386.rpm
D. rpm -e ipchains-1.3.9-5.i386.rpm
Answer» D. rpm -e ipchains-1.3.9-5.i386.rpm
123.

Which of the following format of partition tables does Linux use?

A. Linux
B. BSD
C. UnixWare
D. DOS
Answer» E.
124.

What command is used to copy directory structures in and out?

A. copy
B. cp - p
C. cpio
D. cp
Answer» D. cp
125.

What command is used to print a file?

A. lp
B. pg
C. prn
D. print
Answer» B. pg
126.

What command is used with vi editor to delete a single character?

A. x
B. y
C. a
D. z
Answer» B. y
127.

The physical layer of a network

A. constructs packets of data and sends them across the network
B. controls error detection and correction
C. defines the electrical characteristics of signals passed between the computer and communication devices
D. All of the above
Answer» D. All of the above
128.

What command is used to remove files?

A. dm
B. rm
C. delete
D. erase
Answer» C. delete
129.

What command is used to sort the lines of data in a file in alphabetical order?

A. sort - r
B. st
C. sh
D. sort
Answer» E.
130.

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

A. au
B. ps
C. du
D. pid
Answer» C. du
131.

What shell's wild-card is used to match any number of characters including none?

A. *
B. ?
C. [!ijk]
D. [ijk]
Answer» B. ?
132.

What command is used to sort the lines of data in a file in reverse order?

A. sort - r
B. st
C. sh
D. sort
Answer» B. st
133.

What hardware architectures are not supported by Red Hat?

A. SPARC
B. IBM-compatible
C. Alpha
D. Macintosh
Answer» E.
134.

What is the full form of FSF in Linux?

A. Free Software File
B. File Server First
C. First Serve First
D. Free Software Foundation
Answer» E.
135.

Which of the following is the main Apache configuration file?

A. /etc/apache.conf
B. /etc/httpd/config.ini
C. /etc/httpd/conf/httpd.conf
D. /etc/srm.conf
Answer» D. /etc/srm.conf
136.

Layer one of the OSI model is

A. network layer
B. transport layer
C. link layer
D. physical layer
Answer» E.
137.

How can you add Amit, a new user, to your system?

A. Using useradd
B. Using adduser
C. Using linuxconf
D. All of the above
Answer» E.
138.

What command is used to save the standard output in a file, as well as display it on the terminal?

A. tee
B. grep
C. cat
D. more
Answer» B. grep
139.

What protocol(s) is(are) allowed a user to retrieve her/his mail from the mail server to her/his mail reader?

A. POP3
B. FTP
C. MAP
D. All of the above
Answer» B. FTP