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1. What is the main purpose of a computer network?
2. Which of the following is NOT a type of computer network?
3. What does a modem do at the sender’s end?
4. In which year was the first version of Wi-Fi introduced?
5. Which networking device regenerates weak signals?
6. What is the full form of ARPANET?
7. What is the maximum distance typically covered by a LAN?
8. Which topology uses a single central device to connect all nodes?
9. Which device directs data between different networks and repackages it if needed?
10. What is a node in a network?
11. Which of the following is used for a Personal Area Network (PAN)?
12. What does the MAC address help identify?
13. Which device sends data to all connected devices without checking destination?
14. Which protocol is used to transfer web pages on the Internet?
15. What is the main function of a DNS server?
16. Which IP version provides 128-bit address space?
17. What does RJ-45 refer to in networking?
18. Which topology connects every device to every other device?
19. Which of the following uniquely identifies a device on a local network?
20. What is the approximate range of a PAN?
21. Who invented the World Wide Web?
22. Which of these is an example of a MAN?
23. What type of network is the Internet?
24. What is the primary function of a switch in a LAN?
25. What is the role of a gateway in a network?
26. Which of the following is NOT true about MAC addresses?
27. Which of the following is NOT part of a URL?
28. What is the use of HTTP?
29. Which network device is responsible for connecting LANs to the Internet?
30. Which topology is cheapest and easiest to maintain?
31. Which topology is highly reliable and secure but costly?
32. Which device helps convert analog signals to digital data?
33. What is the purpose of an Ethernet card?
34. Which of the following is an example of a hybrid topology?
35. What does each DNS root server represent?
36. Which layer of DNS contains the top-level servers?
37. What type of address is “192.168.0.178”?
38. In IPv4, each number in the address can range from:
39. How many bits are there in a MAC address?
40. What happens in a ring topology if one node fails?
41. What kind of protocol is TCP/IP?
42. What is the unique identity of a web page on the WWW?
43. Which is more secure: HTTP or HTTPS?
44. The organisation maintaining DNS root servers is called:
45. Which of the following is stored in a DNS server?
46. What does the “www” in a URL indicate?
47. What was the first message sent on ARPANET?
48. What standard defines how devices connect in a LAN?
49. What is the difference between MAC and IP address?
50. What kind of address is “2001:CDBA:0000:0000:0000:0000:3257:9652”?
51. Assertion (A): A modem converts analog signals to digital and vice versa. Reason (R): Computers communicate using analog signals only.
52. Assertion (A): A LAN can be used to share a single printer among multiple computers. Reason (R): LANs allow high-speed data transfer between interconnected devices.
53. Assertion (A): Switches are more efficient than hubs. Reason (R): Switches transmit data only to the intended device, while hubs broadcast data to all devices.
54. Assertion (A): A MAC address is a permanent address assigned to a device’s NIC. Reason (R): MAC addresses are user-configurable in a network.
55. Assertion (A): Star topology is more fault tolerant than ring topology. Reason (R): In star topology, failure of a single peripheral node does not affect the network.
56. Assertion (A): Internet and World Wide Web (WWW) refer to the same concept. Reason (R): Both terms represent the collection of interconnected web pages.
57. Assertion (A): IPv6 addresses provide a much larger address space than IPv4. Reason (R): IPv6 uses 128 bits, while IPv4 uses only 32 bits for addressing.
58. Assertion (A): Ring topology allows simultaneous two-way communication between nodes. Reason (R): Data flows in both directions in a ring topology.
59. Assertion (A): Repeaters are used to extend the range of data transmission in a network. Reason (R): Signals weaken after traveling a certain distance over a cable.
60. Assertion (A): Gateway is necessary to communicate between different networks. Reason (R): Gateways manage only data storage and retrieval operations.
61. Assertion (A): WANs are suitable for connecting different offices across continents. Reason (R): WANs use both wired and wireless media to connect geographically dispersed net- works.
62. Assertion (A): DNS converts a domain name to its corresponding IP address. Reason (R): Browsers only understand numeric IP addresses to access websites.
63. Assertion (A): Ethernet is a wireless network communication standard. Reason (R): Ethernet works with coaxial cables to connect devices in a LAN.
64. Assertion (A): Bus topology is cost-effective for small networks. Reason (R): Bus topology requires less cabling and is easy to set up.
65. Assertion (A): A NIC is necessary for a computer to join a network. Reason (R): NIC provides a physical interface to the communication medium.
66. Assertion (A): PANs generally operate using routers and switches. Reason (R): PANs cover a wide geographical area.
67. Assertion (A): Hybrid topology combines features of multiple basic topologies. Reason (R): It provides scalability and flexibility in large networks.
68. Assertion (A): Domain names are easier to remember than IP addresses. Reason (R): Humans can understand binary values better than text.
69. Assertion (A): IP addresses change when a device connects to a different network. Reason (R): IP addresses are static hardware addresses of the devices.
70. Assertion (A): Routers can repackage data packets for different network types. Reason (R): Routers always transfer data without any changes to the packet size.
71. A university network connects all its departments and laboratories within the campus using Ethernet cables and Wi-Fi. What type of network is best suited for this setup?
72. A company has branch offices in different countries and wants to ensure real-time, secure communication between them. Which of the following network types and protocol combinations is most appropriate?
73. If a DNS server fails, which of the following will most likely happen?
74. A user notices that their device has a new IP address every time they connect to a different network, but the MAC address remains the same. What can be inferred from this?
75. Which device would be most essential for converting digital signals from a computer to analog for Internet transmission over a telephone line?
76. A network administrator wants to design a reliable network where even if one node fails, other devices can still communicate directly. Which topology should they choose?
77. During a network upgrade, the administrator replaces hubs with switches. What benefit is most likely gained?
78. Which of the following scenarios demonstrates the use of a gateway?
79. An e-commerce site moves from HTTP to HTTPS. What advantage does this bring?
80. A student creates a mobile hotspot to connect a laptop and tablet. Which type of network is formed, and what is the typical range?
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July 29, 2025
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