MCQ Question for Class 12 Computer Science Chapter 2 Computer network

Check the below NCERT MCQ Class 12 Computer Science Chapter 2 Computer network with Answers available with PDF free download. MCQ Questions for Class 12 Computer Science with Answers were prepared based on the latest syllabus and examination pattern issued by CBSE, NCERT and KVS. Our teachers have provided below Computer network Class 12 Computer Science MCQs Questions with answers which will help students to revise and get more marks in exams

Computer network Class 12 Computer Science MCQ Questions with Answers

Refer below for MCQ Class 12 Computer Science Chapter 2 Computer network with solutions. Solve questions and compare with the answers provided below

Question. In which of the topology, network components are connected to the same cable?
(a) Star
(b) Ring
(c) Bus
(d) Mesh

Question. Which of the following website is not used for job search?
(a) monster.com
(b) recruitment.com
(c) naukri.com
(d) Myspace

Question. Modulation and demodulation is performed by
(a) microwave
(b) satellite
(c) modem
(d) gateway 

Question. The WWW is made up of the set of interconnected ……… that are linked together over the Internet.
(a) electronic documents
(b) web pages
(c) files
(d) All of these

Question. Geometric arrangement of devices on the network is called
(a) topology
(b) protocols
(c) media
(d) LAN

Question. Which of the following refers to a small, single site network?
(a) DSL
(b) RAM
(c) WAN
(d) PAN

Question. Computer connected to a star topology fails, the entire network will
(a) also fail
(b) work unaffectedly
(c) only server will work
(d) None of these

Question. In URL, http://www.arihant.com/index.htm, which component identifies the path of a web page?
(a) http
(b) www.arihant.com
(c) /index.htm
(d) All of the above

Question. Which of the following is a collection of independent computers and other hardware  interconnected by communication channels?
(a) Computer
(b) Networking
(c) Sharing
(d) None of these

Question. By default, web pages are saved in the ……… folder.
(a) Download
(b) Document
(c) Picture
(d) Music

Question. In order to allow data transfer from server to only the intended computers which network device is required in the lab to connect the computers?
(a) Switch
(b) Hub
(c) Router
(d) Gateway 

Question. Network formed between computers which are spread across the continents is called
(a) LAN
(b) WAN
(c) MAN
(d) WLAN 

Question. A browser is a program, which is used to
(a) connect to Internet
(b) create websites
(c) view sites on web
(d) All of the above

Question. Which is the name of the network topology in which there are bi-directional links between each possible node?
(a) Ring
(b) Mesh
(c) Tree
(d) None of these

Question. Which of the following is developed by Apple Incorporation?
(a) Lynx
(b) Opera
(c) Safari
(d) Mozilla Firefox

Question. ……………… network device is known as an intelligent hub. 
(a) Switch
(b) Hub
(c) Router
(d) Gateway 

Question. If all devices are connected to a central hub, then topology is called
(a) bus topology
(b) ring topology
(c) star topology
(d) tree topology

Question. Suggest the most suitable type of network topology he should use in order to maximise speed and make each computer independent of network breakdowns. 
(a) Bus topology
(b) Star topology
(c) Ring topology
(d) Mesh topology

Question. Network device that sends the data over optimising paths through connected loop is
(a) gateway
(b) hub
(c) router
(d) bridge

Question. Home page helps viewers to find out what they can find on the particular site. Home page is the
(a) first page of a website
(b) index page
(c) about page
(d) None of these

Question. Which of the following topology contains a backbone cable running through the whole length of the network?
(a) Star
(b) Bus
(c) Mesh
(d) Tree

Question. Which of the following is an advantage of networking?
(a) Application sharing
(b) File sharing
(c) User communication
(d) All of these

Question. A website is a collection of
(a) web server
(b) web page
(c) web browser
(d) WWW

Question. A modem is connected in between a telephone line and a
(a) computer
(b) serial port
(c) network
(d) communication adapter

Question. Web page is created using language
(a) XML
(b) Java
(c) C
(d) HTML

Question. In specific, if systems use separate protocols, which one of the following devices is used to link two systems?
(a) Repeater
(b) Gateway
(c) Bridge
(d) Hub

Question. Which switching technique follows the store and forward mechanism?
(a) Circuit
(b) Message
(c) Packet
(d) All of these

Question. Which of the following is not a server side script?
(a) ASP
(b) JSP
(c) PHP
(d) VB Script

Question. Mozilla is a free internet software that includes
(a) Web browser
(b) email client
(c) HTML editor
(d) All of these

Question. What is the size of IPv4?
(a) 16 bits
(b) 32 bits
(c) 64 bits
(d) 128 bits

Question. 1 Gbps is equal to
(a) 125 Mbps
(b) 125 Bps
(c) 125 Kbps
(d) 125 Gbps

Question. Which of the following transmission media has the highest bandwidth?
(a) Co axial cable
(b) Fiber optic cable
(c) Twisted pair cable
(d) None of these

Question. For handling collisions in wireless networks ______ protocol is used.
(a) CSMA
(b) CSMA/CA
(c) CSMA/CD
(d) CSMD

Question. Each IP packet consists of
(a) Source address
(b) Destination address
(c) Source or Destination address
(d) Source and Destination address

Question. Which of the following is not a network device?
(a) Modem
(b) Hub
(c) Switch
(d) Satellite

Question. Which of the following statement(s) is/are true about URL?
(a) URL stands for Uniform Resource Locator.
(b) You can enter URL into address bar.
(c) Both (a) and (b)
(d) It is not necessary for URL to be unique.

Question. Which topology is based on a central node which act as a hub?
(a) Star topology
(b) Bus topology
(c) Tree topology
(d) Hybrid topology

Question. What is the expanded form of XML?
(a) Extended Markup Language
(b) Extensible Markup Language
(c) Extra Markup Language
(d) None of these

Question. What is the even parity bit for 11010011
(a) 0
(b) 1
(c) Both (a) and (b)
(d) None of these

Question. In ______ network each computer is capable of playing a role of a client or a server or both.
(a) Local Area Network
(b) Wide Area Network
(c) Client/server
(d) Peer-to-peer

Question. The function of a repeater is to take a weak and corrupted signal and _____ it.
(a) Restore
(b) Regenerate
(c) Amplify
(d) Reroute

Question. The routing table of router keeps track of
(a) Routing paths to transmit data
(b) Transmitting error free data
(c) Avoiding collisions while transmitting data
(d) None of these

Assertion and Reason Based MCQs

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.
(A) Both A and R are true and R is the correct explanation for A.
(B) Both A and R are true and R is not correct explanation for A.
(C) A is true but R is false.
(D) A is false but R is true.

Question. Assertion (A): The microwave transmission is a line of sight transmission.
Reason (R): Microwave signals travel at a higher frequency than radiowaves

Question. Assertion (A): Bus topology is based on a central which acts as a hub.
Reason (R): Bus topology involves a low cost of installation time.

Question. Assertion (A) : A hub is a networking device used to create LAN
Reason (R) : A hub is a device that is used to segment networks into different subnetworks.

Question. Assertion (A) : An access point is a device that connects dissimilar networks.
Reason (R) : Access point broadcast wireless signals that Wi fi cards can detect.

Question. Assertion (A) : CSMA/CA is used for collision handling in wireless networks.
Reason (R) : In ACK method of CSMA/CA, signal is generated by receiver node only if data is received in valid form.

Question. Assertion (A): A protocol means the rules that are applicable for a network.
Reason (R): Local Area Network is an examples of protocol.

Question. Assertion (A) : Client-Server network is a dedicated network.
Reason (R) : The server in client-server network perform no other tasks besides network services.

Question. Assertion (A) : Parity check ensures error free data transmission.
Reason (R) : The sum of data bits calculated from digital data that is used to ensure the data integrity at the receiver’s end.

Question. Assertion (A) : Routers transmit data in more efficient way.
Reason (R) : Routers maintains a routing table.

Question. Assertion (A) : A domain name is a unique name assigned to a website.
Reason (R) : A URL is not a domain name.

Question. Assertion (A) : IP addresses are very important for communication.
Reason (R) : It identifies a device on the network.

Question. Assertion (A) : A gateway connects dissimilar networks.
Reason (R) : Gateway establishes a connection between local network and external network.

Question. Assertion (A) : Checksum technique is used for checking errors in the received data.
Reason (R) : It takes the sum of all data elements at transmitter’s end only.

Case Based MCQs :

Beauty lines fashion incorporation is a fashion company with design unit and market unit at Bangalore 135m away from each other. The company recently connected their LANs using Ethernet cable to share the stock related information. But after joining their LAN’s they are not able to show the information due to loss of signal in between.

Question. Which device out of the following should you suggest to be installed for a smooth  commu -nication?
(a) Modem
(b) Repeater
(c) UPS
(d) None of these

Question. Which of the following device will be suggested by you to connect each computer in each of the buildings?
(a) Switch
(b) Modem
(c) Gateway
(d) None of these

Question. The company wants to increase their bandwidth and speed for communication at any cost. Which of the following cable(s) is/are suitable for that?
(a) Coaxial Cable
(b) Optical Fibre
(c) Both (a) and (b)
(d) None of these

Question. What will be the best possible connectivity out of the following? You will suggest to connect the new set up of offices in Bangalore with its London based office.
(a) Satellite Link
(b) Infrared
(c) Ethernet
(d) None of these

Question. Which network is suitable to connect computers across different cities?
(a) WAN
(b) MAN
(c) PAN
(d) LAN

Web server is a special computer system running on HTTP through web pages.The web page is a medium to carry data from one computer system to another. The working of the web server starts from the client or user. The client sends their request through the web browser to the web server. Web server takes this request, processes it and then sends back processed data to the client. The server gathers all of our web page information and sends it to the user, which we see on our computer system in the form of a web page. When the client sends a request for processing to the web server, a domain name and IP address are important to the web server. The domain name and IP address are used to identify the user on a large network.

Question. The ……… translates Internet domain and host names to IP address.
(a) domain name system
(b) routing information protocol
(c) Internet relay chart
(d) network time protocol

Question. What does the web server need to send back information to the user?
(a) Home address
(b) Domain name
(c) IP address
(d) Both (b) and (c)

Question. What is the full form of HTTP?
(a) HyperText Transfer Protocol
(b) HyperText Transfer Procedure
(c) Hyperlink Transfer Protocol
(d) Hyperlink Transfer Procedure

Question. Web servers are
(a) IP addresses
(b) computer systems
(c) web pages of a site
(d) a medium to carry data from one computer to another

Question. Computer that requests the resources or data from another computer is called as ……… .
(a) server
(b) client
(c) Both (a) and (b)
(d) None of the above

Case-based MCQs

Attempt any 4 sub-parts from each question. Each subpart carries 1 mark.
I. Meerut school in Meerut is starting up the network between its different wing,. There are four buildings named as S, J, A and H. The distance between various buildings is as follows:
         A to S     200 m
         A to J     150 m
         A to H      50 m
         S to J     250 m
         S to H    350 m
         J to H     350 m
Numbers of computers in each Buildings
         S      130
         J        80
         A      160
         H       50

Question. Suggest the most suitable place (i.e. building) to house the server of this school.
(A) Building S
(B) Building J
(C) Building A
(D) Building H
Ans. Option (C) is correct.

Question. What type of topology is best suited for above network?
(A) Star topology
(B) Bus topology
(C) Ring topology
(D) Mesh topology
Ans. Option (A) is correct.

Question. Which one of the following devices will you suggestfor connecting all the computers with in each of their buildings?
(A) Switch/Hub
(B) Modem
(C) Telephone
(D) Repeater
Ans. Option (A) is correct.

Question. The company wants internet acessibility in all the blocks. The suitable and cost-effective technology for that would be:
(A) Satellite
(B) Lease line
(C) Telephone line
(D) Broadband
Ans. Option (D) is correct.

Question. The school is planning to link its head office situated in New Delhi with the offices in hilly areas. Suggest a way to connect it economically:
(A) Micro waves
(B) Coaxial cable
(C) Fibre optic
(D) Radio waves
Ans. Option (D) is correct.

II. ABC is professional consultancy company. The company is planning to set up their new offices in India with its hub at Bengaluru. As a network adviser, you have to understand their requirements and suggest them the best available solutions. Their queries are mentioned as (i) to (v) below: Physical Location of the blocks of ABC.
Human Resource  Conference  Finance
Block to Block Distances (int Mtr)

Expected number of computers to be installed in each block:

Question. Which type of topology is best suited for above network?
(A) Bus topology
(B) Star topology
(C) Ring topology
(D) Mesh topology
Ans. Option (B) is correct.

Question. What will be the most appropriate block, where ABC should plan to install their server?
(A) Human resource
(B) Finance
(C) Conference
(D) Any of these
Ans. Option (B) is correct.

Question. What will be the best possible connectivity out of the following you will suggest to connect the new setup of offices in Chennai with its London based office.
(A) Satellite Link
(B) Infrared
(C) Ethernet Cable
(D) Wi fi
Ans. Option (A) is correct.

Question The company wants internet accessibility in all the blocks. The suitable and cost-effective technology for that would be:
(A) Satellite
(B) Lease line
(C) Telephone line
(D) Broadband
Ans. Option (D) is correct.

Question. Which of the following device will be suggested by you to connect each computer in each of the buildings?
(A) Switch
(B) Modem
(C) Gateway
(D) Hub
Ans. Option (A) is correct.

III. A company ABC Enterprises has four blocks of buildings as shown:

Computers in each block are networked but blocks are not networked. The company has now decided to connect the blocks also.

Question. The company wants internet accessibility in all the blocks. The suitable and cost-effective technology for that would be:
(A) Satellite
(B) Lease line
(C) Telephone line
(D) Broadband
Ans. Option (D) is correct.

Question. Suggest the most appropriate topology for the connections between the blocks.
(A) Ring topology
(B) Star topology
(C) Mesh topology
(D) Bus topology
Ans. Option (B) is correct.

Question. Which one of the following devices will you suggest for connecting all the computers with in each of their blocks?
(A) Switch/Hub
(B) Modem
(C) Telephone
(D) Repeater
Ans. Option (A) is correct.

Question. Suggest the most appropriate location of the server, to get the best connectivity for maximum number of computers.
(A) BLOCK B2
(B) BLOCK B1
(C) BLOCK B4
(D) BLOCK B3
Ans. Option (B) is correct.

Question. The company is planning to link its head office situated in New Delhi with the offices in hilly areas.
Suggest a way to connect it economically:
(A) Micro waves
(B) Coaxial cable
(C) Fibre optic
(D) Radio waves
Ans. Option (D) is correct.

IV. MyPace University is setting up its academic blocks at Naya Raipur and is planning to set up a network.
The University has 3 academic blocks and one Human Resource Center.
Centre to centre distance between of various
blocks/centres is as follows :
Law Block to Business Block                      40 m
Law Block to Technology Block                 80 m
Law Block to HR Centre                          105 m
Business Block to Technology Block          30 m
Business Block to HR Centre                      35 m
Technology Block to HR Centre                15 m
Number of Computers in each of the blocks/centers are as follows:
Law Block                                                   15
Technology Blocks                                     40
HR Centre                                                 115
Business Block                                            25

Question. Which device you will suggest to be placed/installed in each of these blocks/centre to efficiently connect all the computers with in these blocks/centre ?
(A) Switch
(B) Hub
(C) Router
(D) Repeater
Ans. Option (A) is correct.

Question. Which is the most suitable place (i.e. block/centre) to install the server of this university
(A) Law Block
(B) Business block
(C) Technology block
(D) HR Center
Ans. Option (D) is correct.

Question. The university is planning to connect its admission office in the closest big city, which is more than 250 km from university, which type of network out of the following will be formed?
(A) LAN
(B) MAN
(C) WAN
(D) None of these
Ans. Option (C) is correct.

Question. The company wants internet accessibility in all the blocks. The suitable and cost-effective technology for that would be:
(A) Satellite
(B) Lease line
(C) Telephone line
(D) Broadband
Ans. Option (D) is correct.

Question. Which of the following two buildings needs Repeater for efficient transmission?
(A) Law Block to Business Block
(B) Law Block to Technology Block
(C) Business Block to Technology Block
(D) Technology Block to HR Centre
Ans. Option (B) is correct.

V. Consider the following layout and answer the questions given below:

Question. Which of the following is not true about Bus topology?
(A) Connects peripherals or computers in a linear fashion.
(B) Easy to connect or remove devices in this network
(C) Very cost-effective
(D) Data-transfer speed is very high
Ans. Option (D) is correct.

Question. Which of the following topology is shown in the above layout?
(A) Star
(B) Ring
(C) Bus
(D) Mesh
Ans. Option (C) is correct.

Question. Which of the following cannot be connected using Bus Topology?
(A) School Computer lab
(B) Offices in two separate buildings
(C) Two floors of an office
(D) All of these
Ans. Option (B) is correct.

Question. Bus Topology is also called as _____
(A) Circular topology
(B) Linear topology
(C) Ring topology
(D) Hybrid topology
Ans. Option (B) is correct.

Question. Which of the following medium is best suited to create bus topology?
(A) Twisted pair
(B) Coaxial cable
(C) Fiber optic
(D) Telephone lines
Ans. Option (B) is correct.