80+ Important MCQ on Computer Network Class 12

80+ Important MCQ on Computer Network Class 12

 

1. A Computer Network:

a) Is a collection of hardware components and computers?

b) Is interconnected by communication channels

c) Allows sharing of resources and information

d) All of the above

d) All of the above

 

 

2. What is a Firewall in computer network?

a) The physical boundary of network

b) An operating system of computer network

c) A system designed to prevent unauthorized access

d) A web browsing software

c) A system designed to prevent unauthorized access

 

 

3. What is the use of Bridge in the Network?

a) To connect LANs

b) To separate LANs

c) To control network speed

d) All of the above

a) To connect LANs

 

 

4. Each IP packet must contain:

a) Only Source address

b) Only Destination address

c) Source and Destination address

d) Source or Destination address

c) Source and Destination address

 

 

5. Which of these is not a communication channel?

a) Satellite

b) Microwave

c) Radio wave

d) Wi-Fi

d) Wi-Fi

 

 

6. MAN Stands for _____.

a) Metropolitan Area Network

b) Main Area Network

c) Metropolitan Access Network

d) Metro Access Network

a) Metropolitan Area Network

 

 

7. Which of the following is the smallest network?

a) WAN

b) MAN

c) PAN

d) LAN

c) PAN

 

 

8. Which transmission media is capable of having a much higher bandwidth (data capacity)?

a) Coaxial

b) Twisted pair cable

c) Untwisted cable

d) Fiber optic

d) Fiber optic

 

 

9. Which type of transmission media is the least expensive to manufacture?

a) Coaxial

b) Twisted pair cable

c) CAT cable

d) Fiber optic

b) Twisted pair cable

 

 

10. A device that forwards data packet from one network to another is called a

a) Bridge

b) Router

c) Hub

d) Gateway

b) Router

 

 

11. What is a standalone computer?

a) A computer that is not connected to a network

b) A computer that is being used as a server

c) A computer that does not have any peripherals attached to it

d) A computer that is used by only one person

a) A computer that is not connected to a network

 

 

12. Which of the following is the fastest media of data transfer?

a) Co-axial Cable

b) Untwisted Wire

c) Telephone Lines

d) Fiber Optic

d) Fiber Optic

 

 

13. Hub is a

a) Broadcast device

b) Unicast device

c) Multicast device

d) None of the above

a) Broadcast device

 

 

 

14. Switch is a

a) Broadcast device

b) Unicast device

c) Multicast device

d) None of the above

b) Unicast device

 

 

 

15. The device that can operate in place of a hub is a:

a) Switch

b) Bridge

c) Router

d) Gateway

a) Switch

 

 

16. In computer, converting a digital signal in to an analog signal is called

a) modulation

b) demodulation

c) conversion

d) transformation

a) modulation

 

 

17. What is the address size of IPv6?

a) 32 bit

b) 64 bit

c) 128 bit

d) 256 bit

c) 128 bit

 

 

18. Which of these is not an example of unguided media?

a) Optical Fibre Cable

b) Radio wave

c) Bluetooth

d) Satellite

a) Optical Fibre Cable

 

 

19. Two devices are in network if

a) A process in one device is able to exchange information with a process in another device

b) A process is running on both devices

c) The processes running of different devices are of same type

d) None of the above.

a) A process in one device is able to exchange information with a process in another device

 

 

20. Which of the following is not the Networking Devices?

a) Gateways

b) Linux

c) Routers

d) Firewalls

b) Linux

 

 

21. The location of a resource on the internet is given by its?

a) Protocol

b) URL

c) E-mail address

d) ICQ

b) URL

 

 

22. The term HTTP stands for?

a) Hyper terminal tracing program

b) Hypertext tracing protocol

c) Hypertext transfer protocol

d) Hypertext transfer program

c) Hypertext transfer protocol

 

 

 

23. Which software prevents the external access to a system?

a) Firewall

b) Gateway

c) Router

d)Virus checker

a) Firewall

 

 

 

24. Which one of the following is the most common internet protocol?

a) HTML

b)NetBEUI

c)TCP/IP

d)IPX/SPX

c)TCP/IP

 

 

 

25. The term FTP stands for?

a) File transfer program

b)File transmission protocol

c)File transfer protocol

d)File transfer protection

c)File transfer protocol

 

 

 

26. Which one of the following is not a network topology?

a) Star

b)Ring

c)Bus

d)Peer to Peer

d)Peer to Peer

 

 

 

27. Which of the following is not an unit for data transfer rate?

a) MBPS

b)KBPS

c)SBPS

d)GBPS

c)SBPS

 

 

 

28. This was the first network.

a) CSNET

b)NSFNET

c)ANSNET

d)ARPANET

d)ARPANET

 

 

29. A_______is a data communication system within a building, plant, orcampus, or between near by buildings.

a) MAN

b)LAN

c)WAN

d) None of the above

b)LAN

 

 

30._________________ is a collection of many separate networks

a) A MAN

b) An internet

c) A LAN

d) None of the above

b) An internet

 

 

31. A________is a set of rules that governs data communication.

a) forum

b) protocol

c) standard

d) None of the above

b) protocol

 

 

32. Which of the following is required to communication between two computers?

a) Communication hardware

b) Communications software

c) Protocol

d) All of above including access to transmission medium

d) All of above including access to transmission medium

 

 

 

33. Bluetooth is an example of

a) Wide area network

b) Virtual private network

c) Local area network

d) Personal area network

d) Personal area network

 

 

 

34. A device which can be connected to a network without using cable is called

a) Distributed device

b) Centralized device

c) Open-source device

d) Wireless device

d) Wireless device

 

 

35. The vast network of computers that connects millions of people all over the world is called

a) Internet

b) Hypertext

c) LAN

d) Web

a) Internet

 

 

36. MAC address is of ___________

a) 24 bits

b) 36 bits

c) 42 bits

d) 48 bits

d) 48 bits

 

 

37. Which of the following appears harmless but actually performs malicious functions such as deleting or damaging files.

a) WORM

b)Virus

c)Trojan Horse

d) Malware

c)Trojan Horse

 

 

38. Name the protocol that is used to send emails

a) FTP

b)SMTP

c)HTTP

d)TCP

b)SMTP

 

 

39. Name the protocol that is used to receive emails

a) POP

b)VOIP

c)DHCP

d)FTP

a) POP

 

 

40. Rajesh has purchased a new Smart TV and wants to cast a video from his mobile to his new Smart TV. Identify the type of network he is using:

a) LAN

b)MAN

c)WAN

d)PAN

d)PAN

 

 

41. The topology in which all nodes are individually connected to a central connection point:

a) Ring

b)Bus

c)Star

d)Tree

c)Star

 

42. Which of the following best describes uploading information?

a) Sorting data on a disk drive

b)Sending information to a host computer

c)Receiving information from a host computer

d)Sorting data on a hard drive

b)Sending information to a host computer

 

 

43. The term IPv4 stands for?

a) Internet Protocol Version 4

b)Internet Programming Version 4

c)International Programming Version 4

d)None of these

a) Internet Protocol Version 4

 

44. In specific, if the systems use separate protocols, which one of the following devices is used to link two systems?

a) Repeater

b)Gateway

c)Bridge

d)Hub

b)Gateway

 

45. DNS is the abbreviation of

a) Dynamic Name System

b) Dynamic Network System

c) Domain Name System

d) Domain Network Service

c) Domain Name System

 

 

46. What is the meaning of Bandwidth in Network?

a) Transmission capacity of a communication channels

b) Connected Computers in the Network

c) Class of IP used in Network

d) None of Above

a) Transmission capacity of a communication channels

 

 

47. What does protocol defines?

a) Protocol defines what data is communicated)

b) Protocol defines how data is communicated)

c) Protocol defines when data is communicated)

d) All of above

d) All of above

 

 

48. Which of the following can be Software?

a) Routers

b) Firewalls

c) Gateway

d) Modems

b) Firewalls

 

49. The loss in signal power as light travels down the fiber is called)…………

a) Attenuation

b)Propagation

c) Scattering

d)Interruption

a) Attenuation

 

 

50. Which of the following TCP/IP protocols is used for transferring files form one machine to another.

a) FTP

b) SNMP

c) SMTP

d) RPC

a) FTP

 

51. Which of the following protocol is used for remote terminal connection service?

a) RARP

b) UDP

c) FTP

d) TELNET

d) TELNET

 

52. Which of the following is considered as the unsolicited commercial email?M

a) Virus

b)Malware

c)Spam

d)All of the above

c)Spam

 

53. It can be a software program or a hardware device that filters all data packets coming through the internet, a network, etc) it is known as the_______:

a) Antivirus

b)Firewall

c)Cookies

d)Malware

b)Firewall

 

54. The term “TCP/IP” stands for_____

a) Transmission Contribution protocol/ internet protocol

b)Transmission Control Protocol/ internet protocol

c)Transaction Control protocol/ internet protocol

d)Transmission Control Protocol/ internet protocol

b)Transmission Control Protocol/ internet protocol

 

55. Which of the following is a type of independent malicious program that never required any host program?

a) Trojan Horse

b) Worm

c)Trap Door

d)Virus

b) Worm

 

56. In order to ensure the security of the data/ information, we need to ____________ the data:

a) Encrypt

b)Decrypt

c)Delete

d)None of the above

a) Encrypt

 

57. Firewall is the type of ………..

a) Virus

b) Security threats

c) Worm

d) None of the above.

d) None of the above.

 

58. It allows a visited website to store its own information about a user on the user’s computer:

a) Spam

b)cookies

c)Malware

d)Adware

b)cookies

 

 

59. In which of the following switching methods, the message is divided into small packets?

a) Message switching

b) Packet switching

c) Circuit switching

d) None of these

b) Packet switching

 

60. Which of the following switch methods creates a point-to-point physical connection between two or more computers?

a) Message switching

b) Packet switching

c) Circuit switching

d) None of these

c) Circuit switching

 

61. MAC address is also called ______.

a) Physical address

b)Logical address

c)Source address

d)Destination address

a) Physical address

 

62. ARPANET stands for _______.

a) Advanced Recheck Projects Agency Internet

b)Advanced Recheck Projects Agency Network

c)Advanced Research Projects Agency Network

d)Advanced Research Projects Agency Internet

c)Advanced Research Projects Agency Network

 

 

63. Which of the following devices is not a networking device?

a) Hub

b)Switch

c)Bridge

d)None of these

d)None of these

 

64. How many pins does RJ-45 contain?

a) Two

b)Four

c)Eight

d)Ten

c)Eight

 

65. NIC Stands for –

a) Network identity card

b)Network interface code.

c)National interface card

d)Network interface card

c)National interface card

 

66. Which of the following is not a type of guided or wired communication channel?

a) Twisted Pair

b)Coaxial

c)Fibre Optic

d)WiMax

d)WiMax

 

67. Which of the following is not a type of unguided or wireless communications channel?

a) Microwave

b) Radiowave

c) Ethernet

d) Sattelite

c) Ethernet

 

68. Which of the following wireless medium consists of a parabolic antena mounted on towers?

a) Sattelite

b)Radiowave

c)Microwave

d)Infrared

c)Microwave

 

69. Which of the following cable consist of a solid wire core surrounded by one or more foil or wire shields?

a) Ethernet Cables

b)Coaxial Cables

c)Fibre Optic Cables

d)Power Cable

b)Coaxial Cables

 

70. A collection of hyperlinked documents on the internet forms the ?

a) World Wide Web (WWW)

b)E-mail system

c)Mailing list

d)Hypertext

a) World Wide Web (WWW)

 

71. Protocols are set of rules to govern _________

a) Communication

b) Standard

c) Metropolitan communication

d) Bandwidth

a) Communication

 

72. An internet is a __________

a) Collection of WANS

b) Network of networks

c) Collection of LANS

d) Collection of identical LANS and WANS

b) Network of networks

 

73. Which protocol is commonly used to retrieve email from a mail server?

a) FTP

b) IMAP

c) HTML

d) TELNET

b) IMAP

 

74. Which of the following allows user to view a webpage?

a) Operating System

b) Website

c) Interpreter

d) Internet Browser

d) Internet Browser

 

 

75. A network router joins two _________ together?

a) Computers

b) Switches

c) Networks

d) Gateway

c) Networks

 

 

76. A network point that provides entrance into another network is called as ___________

a) Node

b) Gateway

c) Switch

d) Router

b) Gateway

 

77. TELNET used _________ protocol for data connection

a) TCP

b) UDP

c) IP

d) DHCP

a) TCP

 

 

78. Google Chrome is example of :

a) Programming Language

b)Web Server

c)Protocol

d) Web Browser

d) Web Browser

 

79. Name the transmission media best suitable for connecting to hilly areas.

a) Co-axial Cable

b)Twisted pair

c) Microwave

d)Optical fiber.

c) Microwave

 

80. Rahul wants to establish computer network in his cyber cafe, which of the following device will be suggested by you to connect each computer in the cafe?

a) Switch

b)Modem

c)Gateway

d)Repeater

a) Switch

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