Networking And Internet MCQs - Class 11 IT (802)

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Q1. ARPANET was developed primarily to:
a) Provide entertainment services
b) Connect geographically separated research computers
c) Replace television networks
d) Provide commercial email services

Q2. ARPANET was developed in:
a) 1950
b) 1969
c) 1977
d) 1984

Q3. Which technology did ARPANET use for data transmission?
a) Circuit switching
b) Digital packet switching
c) Message switching
d) Analog switching

Q4. Which protocol acted as the “glue” connecting heterogeneous networks?
a) HTTP
b) FTP
c) TCP/IP
d) SMTP

Q5. NSFNET was developed in 1984 by:
a) IETF
b) ICANN
c) NSF
d) ARPANET

Q6. In which year was PSTN developed?
a) 1876
b) 1877
c) 1969
d) 1970

Q7. TCP/IP was developed in which year to connect heterogeneous networks?
a) 1969
b) 1970
c) 1984
d) 1990

Q8. The Internet can best be described as:
a) A single private network
b) A network of networks
c) A single computer system
d) A collection of web pages only

Q9. Which organization standardizes the core protocols of the Internet such as IPv4 and IPv6?
a) ICANN
b) IETF
c) NSF
d) ISP

Q10. Which organization coordinates the assignment of unique identifiers such as domain names and IP addresses?
a) IETF
b) ICANN
c) ARPANET
d) NSFNET

Q11. An Internet Service Provider (ISP) primarily provides:
a) Computer viruses
b) Internet connectivity
c) MAC addresses
d) Network topology

Q12. Bandwidth refers to:
a) The physical length of a cable
b) Maximum data transfer rate of a network or connection
c) Number of computers in a network
d) Security level of a network

Q13. A collection of interconnected nodes that communicate via a channel is called a:
a) Topology
b) Computer network
c) Protocol
d) Domain

Q14. Which of the following is NOT a component of a basic communication system?
a) Sender
b) Receiver
c) Message
d) Router

Q15. Which of the following can act as a node in a computer network?
a) Computer
b) Printer
c) Telephone
d) All of these

Q16. In a communication system, the component responsible for sending data is called the:
a) Receiver
b) Channel
c) Sender
d) Message

Q17. The information being communicated in a structured form is called:
a) Channel
b) Message
c) Node
d) Protocol

Q18. The communication medium through which a message is transmitted is called:
a) Receiver
b) Channel
c) Sender
d) Node

Q19. In simplex communication:
a) Both devices transmit simultaneously.
b) Both devices transmit, but one at a time.
c) Data travels only in one direction.
d) No data can be transmitted.

Q20. Which communication mode allows both parties to transmit, but only one at a time?
a) Simplex
b) Half-duplex
c) Full-duplex
d) Multiplex

Q21. A video call requires communication in which both participants can send and receive data simultaneously. This is:
a) Simplex
b) Half-duplex
c) Full-duplex
d) Broadcast

Q22. NIC supports:
a) Simplex only
b) Half-duplex only
c) Full-duplex
d) No communication mode

Q23. Which of the following is a benefit of computer networking?
a) Resource sharing
b) Communication
c) Sharing hardware and software
d) All of these

Q24. A transmission medium is:
a) A software application
b) A channel through which data is transmitted
c) A network protocol
d) A network address

Q25. Which of the following is a guided transmission medium?
a) Radio wave
b) Microwave
c) Twisted pair
d) Infrared

Q26. Which of the following is NOT a guided medium?
a) Coaxial cable
b) Fibre optics
c) Twisted pair
d) Microwave

Q27. In optical fibre, signals travel in the form of:
a) Voltage
b) Current
c) Light
d) Radio waves

Q28. Unguided media transmit data using:
a) Physical conductors
b) Electromagnetic waves
c) Optical cables only
d) Copper wires only

Q29. Which pair contains only unguided media?
a) Twisted pair and coaxial
b) Fibre optic and twisted pair
c) Microwave and infrared
d) Coaxial and microwave

Q30. A weak and distorted signal over a long distance can be restored using a:
a) Router
b) Repeater
c) Bridge
d) Gateway

Q31. A repeater is also known as a:
a) Digital generator/regenerator
b) Protocol converter
c) Routing table
d) Network server

Q32. Which device connects several cable segments and sends incoming data to all other lines?
a) Hub
b) Router
c) Switch
d) Gateway

Q33. Which device is described as an intelligent device that exercises discretion while forwarding data?
a) Hub
b) Bridge
c) Repeater
d) Modem

Q34. A bridge is mainly used to:
a) Connect two or more LANs
b) Connect different protocols
c) Amplify signals only
d) Assign IP addresses

Q35. A switch forwards an incoming data frame:
a) To every node
b) To only the destination node
c) To another network only
d) To the Internet automatically

Q36. Which device connects individual nodes within a network?
a) Switch
b) Router
c) Gateway
d) Repeater

Q37. Which device connects different networks such as LANs or WANs?
a) Hub
b) Router
c) Repeater
d) Switch

Q38. A router determines the destination network using its:
a) MAC address only
b) Routing table
c) Password manager
d) Domain name

Q39. A device that connects networks based on different protocols is called a:
a) Router
b) Switch
c) Gateway
d) Bridge

Q40. Which network normally covers a range of approximately 10 metres?
a) PAN
b) LAN
c) MAN
d) WAN

Q41. A network established within a school building is most likely a:
a) PAN
b) LAN
c) MAN
d) WAN

Q42. According to the given content, a LAN may span up to approximately:
a) 10 m
b) 1 km
c) 50 km
d) 1000 km

Q43. LANs typically operate at a speed range of:
a) 1–10 Mbps
b) 10 Mbps–1 Gbps
c) 100 Mbps only
d) 1–2 Gbps

Q44. A network connecting several LANs within a city is a:
a) PAN
b) LAN
c) MAN
d) WAN

Q45. A MAN can span an area of approximately:
a) 10 metres
b) 1 km
c) 50 km
d) 1000 km

Q46. Which network is suitable for connecting remote areas across a country or continent?
a) PAN
b) LAN
c) MAN
d) WAN

Q47. A cable television network within a city is an example of:
a) LAN
b) MAN
c) WAN
d) PAN

Q48. The arrangement of nodes in a network is called:
a) Protocol
b) Topology
c) Bandwidth
d) Domain

Q49. In which topology is there a long backbone cable connecting all nodes through a tap?
a) Star
b) Ring
c) Bus
d) Mesh

Q50. Which topology suffers from single point failure disrupting the entire network due to its circular arrangement?
a) Star
b) Ring
c) Bus
d) Mesh

Q51. In which topology are all devices connected to a central controller called hub?
a) Bus
b) Ring
c) Star
d) Mesh

Q52. Which topology provides secure data transfer through dedicated point-to-point links between every pair of nodes?
a) Bus
b) Star
c) Ring
d) Mesh

Q53. Tree topology is a hybrid combination of:
a) Star and Ring
b) Star and Bus
c) Bus and Mesh
d) Ring and Mesh

Q54. Which topology requires the least amount of cabling?
a) Star
b) Bus
c) Mesh
d) Tree

Q55. Which of the following topologies falls under the broadcast category?
a) Star
b) Mesh
c) Bus
d) Point-to-point

Q56. If the backbone cable of a tree topology network is damaged, what happens?
a) Only one segment is affected
b) Entire network communication is disrupted
c) No effect on network
d) Only star part is affected

Q57. In a mesh network, difficulty arises mainly due to:
a) Fault detection
b) Large number of connections required
c) Data collision
d) Low bandwidth

Q58. In which topology do all nodes share the same physical link?
a) Point-to-point
b) Broadcast
c) Star
d) Mesh

Q59. In ring topology, devices are connected:
a) To a central hub
b) In the form of a ring
c) Through every possible pair
d) To a backbone and hub combination

Q60. A major limitation of ring topology is:
a) High cabling requirement
b) Single point failure can disrupt the network
c) It has no connections between nodes
d) It cannot transmit messages

Q61. In star topology, all devices are connected to:
a) A backbone
b) A central controller
c) Every other node
d) A router only

Q62. Which topology provides dedicated point-to-point connections between every possible pair of nodes?
a) Bus
b) Ring
c) Star
d) Mesh

Q63. Which topology provides secure data transfer with no traffic problem according to the given content?
a) Bus
b) Mesh
c) Ring
d) Star

Q64. Tree topology is a combination of:
a) Ring and mesh
b) Star and bus
c) Bus and mesh
d) Star and ring

Q65. A MAC address is assigned to a NIC by:
a) Network administrator
b) ISP
c) Manufacturer
d) User

Q66. A MAC address is generally:
a) Temporary
b) Permanent
c) Assigned by ISP
d) Changed whenever the computer changes networks

Q67. A MAC address is a:
a) 12-digit hexadecimal number
b) 4-digit decimal number
c) 32-bit decimal number only
d) Domain name

Q68. The first half of a MAC address identifies the:
a) User
b) Network
c) Adapter manufacturer
d) ISP

Q69. The second half of a MAC address represents the:
a) Serial number assigned by manufacturer
b) IP address
c) Network address
d) Domain name

Q70. Which address can change when a computer moves from one network to another?
a) MAC address
b) IP address
c) Manufacturer ID
d) NIC serial number

Q71. An IP address in IPv4 consists of:
a) 16 bits
b) 24 bits
c) 32 bits
d) 48 bits

Q72. Which of the following is a valid dotted-decimal representation?
a) 59.177.134.72
b) 59:177:134:72
c) 59-177-134-72
d) 59/177/134/72

Q73. Why are domain names used?
a) They replace all network devices.
b) They are easier for humans to remember than IP addresses.
c) They permanently identify a NIC.
d) They encrypt websites.

Q74. The process of obtaining an IP address corresponding to a domain name is called:
a) Packet switching
b) Domain Name Resolution
c) Routing
d) Encryption

Q75. Which of the following is a generic domain name?
a) .in
b) .us
c) .edu
d) .jp

Q76. Which service is specifically used for transferring files between machines?
a) FTP
b) SMTP
c) HTTP
d) TELNET

Q77. TELNET is primarily used for:
a) Sending emails
b) Remote login
c) File compression
d) Domain resolution

Q78. WWW uses which protocol for client-server communication?
a) FTP
b) SMTP
c) HTTP
d) POP3

Q79. A document containing text, images, and hyperlinks on the WWW is called a:
a) Domain
b) Web page
c) Protocol
d) Packet

Q80. Which protocol is associated with sending email?
a) SMTP
b) FTP
c) TELNET
d) IP

Q81. Which protocol allows email messages to be downloaded to a local computer?
a) HTTP
b) POP3
c) FTP
d) UDP

Q82. Which transport-layer protocol is reliable and connection-oriented?
a) UDP
b) TCP
c) IP
d) HTTP

Q83. Which protocol is connectionless and places more emphasis on immediate response?
a) TCP
b) UDP
c) HTTP
d) SMTP

Q84. Which TCP/IP layer adds source and destination IP addresses?
a) Application layer
b) Transport layer
c) Internet layer
d) Link layer

Q85. Which malware appears useful or desirable but secretly harms the system?
a) Worm
b) Trojan Horse
c) Virus
d) Firewall

Q86. Which security tool scans files against stored malware definitions and removes detected malicious programs?
a) Firewall
b) Antivirus
c) Gateway
d) Router

Q87. Fragments of a message at the Transport layer are called:
a) Frames
b) Segments
c) Packets
d) Bits

Q88. A software code that corrupts system files by inserting itself into programs is called a:
a) Worm
b) Virus
c) Trojan Horse
d) Firewall

Q89. Which malware does not require a host application to replicate and floods the hard disk with copies of itself?
a) Virus
b) Worm
c) Trojan Horse
d) Spyware

Q90. A Trojan Horse typically creates a:
a) Firewall
b) Backdoor
c) Cookie
d) Patch

Q91. Stealing personal information through fraudulent emails is called:
a) Vishing
b) Phishing
c) SMSing
d) Spamming

Q92. Seeking personal banking information through a phone call is called:
a) Phishing
b) Vishing
c) SIM Swap Scam
d) Cyberstalking

Q93. A cyber-attack that floods a resource with superfluous requests making it unavailable is called:
a) Phishing
b) Denial of Service attack
c) Eavesdropping
d) Identity theft

Q94. Secretly listening to a private conversation without consent is called:
a) Cyberstalking
b) Eavesdropping
c) Vishing
d) Spamming

Q95. Repeated unwanted following/contacting of a person online despite disinterest is called:
a) Cyberbullying
b) Cyberstalking
c) Identity theft
d) SMSing

Q96. Dishonest use of someone else’s electronic signature or password is called:
a) Spamming
b) Identity theft
c) Ransomware
d) SIM Swap Scam

Q97. Malware that encrypts a victim’s device and demands payment to decrypt it is called:
a) Worm
b) Ransomware
c) Trojan Horse
d) Spam

Q98. Which software protects a system by scanning files against malware definitions?
a) Firewall
b) Antivirus
c) Password manager
d) Router

Q99. Which device/software protects an internal network from malicious external traffic?
a) Antivirus
b) Firewall
c) Password manager
d) Repeater

Q100. A small piece of information stored by a browser about a website visited is called a:
a) Packet
b) Cookie
c) Segment
d) Cache

Q101. The amendment to the IT Act 2000 for cyber security is known as:
a) IT Amendment Act 2005
b) Information Technology Amendment Act, 2008
c) Cyber Security Act 2010
d) Digital India Act

Q102. A secure padlock symbol in the browser’s address bar indicates:
a) The site uses UDP
b) The site has an SSL digital certificate
c) The site is a phishing site
d) The site has no firewall