CBSE Class 12 Computer Science Computer Network MCQs Set A

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

Answer : C

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

Answer : D

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

Answer : C

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 the options

Answer : B

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

Answer : A

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

Answer : B

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

Answer : C

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 the options

Answer : A

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

Answer : A

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

Answer : B

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

Answer : B

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

Answer : D

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 the options

Answer : A

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

Answer : A

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.

Answer : C

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

Answer : C

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.

Answer : A

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 the options

Answer : B

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 the options

Answer : A

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 the options

Answer : B

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 the options

Answer : A

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

Answer : B
 

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

Answer : D

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

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 the options

Answer : B

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

Answer : B

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

Answer : B