200 One-Liner Computer Network Quiz with Answers

Introduction

Welcome to our comprehensive collection of 200 one-liner computer network quiz questions with answers, designed to boost your general knowledge and aid in exam preparation. Whether you’re a student gearing up for competitive exams, a professional pursuing networking certifications, or simply curious about computer networks, this quiz is your ultimate resource. Covering key topics like network protocols, topologies, security, and more, these questions are sourced from credible educational platforms to ensure accuracy and relevance. Test your skills, learn new concepts, and ace your exams with this SEO-optimized computer network quiz with answers!

1. What is a computer network?
   A collection of interconnected computers and devices that share resources.
2. What does LAN stand for?
   Local Area Network.
3. What is the Internet?
   An interconnection of wide area networks (WANs).
4. Which protocol suite is fundamental to Internet communication?
   TCP/IP.
5. What is the OSI model?
   A structured plan for how applications communicate over a network.
6. How many layers does the OSI model have?
   Seven.
7. Which OSI layer handles data routing paths?
   Network layer.
8. What is multiplexing in networking?
   Combining multiple signals into one over a shared medium.
9. Which device forwards packets between networks using routing information?
   Router.
10. What is a distributed system?
    A collection of computers appearing as a single coherent system to users.
11. What is a Denial of Service (DoS) attack?
    An attack that makes network resources unavailable to users.
12. Which layer in the OSI model performs error control?
    Data Link layer.
13. What is a firewall?
    A device that monitors and filters network traffic based on security policies.
14. What does WAN stand for?
    Wide Area Network.
15. What is Bluetooth used for?
    Short-range wireless data exchange in a Personal Area Network (PAN).
16. What is an overlay network?
    A virtual network built on top of an existing network.
17. Which protocol is used for secure web browsing?
    HTTPS.
18. What is a MAC address?
    A unique identifier for a network interface card.
19. What is packet switching?
    Dividing messages into packets for transmission.
20. Which device amplifies network signals?
    Repeater.
21. What is a hub in networking?
    A device that connects multiple devices in a network.
22. What does .edu represent in a domain name?
    Educational institutions.
23. What is a client in a network?
    A computer accessing services from a server.
24. What is a two-letter domain like .us or .uk called?
    Country domain.
25. What is simplex communication?
    Unidirectional data transmission.
26. What is half-duplex communication?
    Bidirectional data transmission, one direction at a time.
27. What is full-duplex communication?
    Simultaneous bidirectional data transmission.
28. Which topology uses a central connecting point?
    Star topology.
29. What is a node in a network?
    A device that sends or receives data, like a computer or printer.
30. What is RS232C?
    A standard interface for serial data transmission.
31. What is the base of the hexadecimal number system?
    16.
32. What is an intranet?
    A closed network accessible only to a specific group.
33. Who is considered the “father of the Internet”?
    Vinton Gray Cerf.
34. What is a MAN?
    Metropolitan Area Network.
35. What is ARPANET?
    An early form of the Internet developed in the 1960s.
36. What is Usenet?
    A worldwide Internet discussion system using newsgroups.
37. What is spam in networking?
    Unsolicited commercial email sent in bulk.
38. What is a digital footprint?
    A trail of data reflecting online activities.
39. What is a passive digital footprint?
    Data collected without user knowledge, like website visit counts.
40. What is an active digital footprint?
    Data intentionally left by users, like social media comments.
41. What is an ISP?
    Internet Service Provider, connecting users to the Internet.
42. What is a Tier 1 ISP?
    An ISP with global reach, interconnecting without paying for transit.
43. What is a modem?
    A device that converts digital signals to analog and vice versa.
44. What is a video card?
    A circuit generating video signals for a computer display.
45. How many pins does an RS-232 connector typically have?
    25.
46. What is a file server?
    A server allowing remote access to files over a network.
47. What is a hard disk drive?
    A non-volatile magnetic storage device.
48. Which protocol is used for email transmission?
    SMTP (Simple Mail Transfer Protocol).
49. What is FTP?
    File Transfer Protocol for transferring files over a network.
50. What is a VPN?
    Virtual Private Network for secure remote access.
51. What is a switch in networking?
    A device that connects devices within a network using packet switching.
52. What is IPv4?
    A 32-bit addressing scheme for Internet devices.
53. What is IPv6?
    A 128-bit addressing scheme to replace IPv4.
54. What is a coaxial cable?
    A cable using copper wires for data transmission with EMI protection.
55. What is a bus topology?
    A network where all devices connect to a single cable.
56. What is a routing path?
    The path data takes through a network to reach its destination.
57. What is VoIP?
    Voice over Internet Protocol for voice communication over networks.
58. What is a spreadsheet?
    Software for storing and analyzing data in rows and columns.
59. What is a white hat hacker?
    A cybersecurity expert who identifies vulnerabilities ethically.
60. What is Python?
    A high-level, interpretable programming language.
61. What is a protocol?
    A set of rules governing data communication.
62. What is a bridge in networking?
    A device connecting two network segments at the data link layer.
63. What is a gateway?
    A device connecting networks with different protocols.
64. What is a frame in networking?
    A data unit at the data link layer.
65. What is error detection in networking?
    Techniques to identify errors in data transmission.
66. What is a physical layer?
    The OSI layer handling hardware-specific operations.
67. What is the application layer?
    The OSI layer interacting with user applications.
68. What is a transport layer?
    The OSI layer ensuring reliable data transfer.
69. What is frame relay?
    A packet-switching protocol for WANs.
70. What is a networking protocol?
    A standard for data exchange between devices.
71. What is a browser’s role in networking?
    It operates at the application layer for web access.
72. What is a logical topology?
    The way data flows in a network, regardless of physical layout.
73. What is a twisted pair Ethernet’s logical topology?
    Bus topology.
74. What is a registered trademark in networking?
    A symbol protecting brands or logos.
75. What is a social media platform example?
    Instagram, owned by Facebook.
76. What is a PAN?
    Personal Area Network for short-range device communication.
77. What is a peer-to-peer network?
    A network where devices act as both clients and servers.
78. What is the maximum range of Bluetooth?
    10 meters.
79. What is a network interface card (NIC)?
    A hardware component for network connectivity.
80. What is a simplex mode example?
    A television broadcast.
81. What is a half-duplex mode example?
    A walkie-talkie.
82. What is a full-duplex mode example?
    A telephone call.
83. What is a star topology’s central device?
    A switch or hub.
84. What is a ring topology?
    A network where each device connects to the next in a loop.
85. What is a mesh topology?
    A network where devices are interconnected directly.
86. What is a hybrid topology?
    A combination of two or more topologies.
87. What is a subnet?
    A smaller network within a larger network.
88. What is subnetting?
    Dividing a network into smaller subnetworks.
89. What is a default gateway?
    A router that connects a local network to external networks.
90. What is DHCP?
    Dynamic Host Configuration Protocol for automatic IP assignment.
91. What is DNS?
    Domain Name System for translating domain names to IP addresses.
92. What is a domain name?
    A human-readable address for a website.
93. What is a packet?
    A small unit of data transmitted over a network.
94. What is latency?
    The time delay in data transmission over a network.
95. What is bandwidth?
    The maximum data transfer rate of a network.
96. What is throughput?
    The actual data transfer rate achieved in a network.
97. What is a collision in networking?
    When two devices transmit data simultaneously on a shared medium.
98. What is CSMA/CD?
    Carrier Sense Multiple Access with Collision Detection.
99. What is a broadcast?
    Sending data to all devices in a network.
100. What is a unicast?
     Sending data to a single device in a network.
101. What is a multicast?
     Sending data to a group of devices in a network.
102. What is a proxy server?
     A server acting as an intermediary between clients and servers.
103. What is NAT?
     Network Address Translation for mapping private to public IPs.
104. What is a public IP address?
     An IP address accessible over the Internet.
105. What is a private IP address?
     An IP address used within a local network.
106. What is a static IP address?
     A fixed IP address assigned to a device.
107. What is a dynamic IP address?
     An IP address assigned temporarily by DHCP.
108. What is a loopback address?
     127.0.0.1, used to test network connectivity on a device.
109. What is a port in networking?
     A logical endpoint for communication in a device.
110. What is port 80 used for?
     HTTP traffic.
111. What is port 443 used for?
     HTTPS traffic.
112. What is a socket in networking?
     A combination of an IP address and port number.
113. What is a handshake in networking?
     A process to establish a connection, like TCP’s three-way handshake.
114. What is a three-way handshake?
     SYN, SYN-ACK, ACK process in TCP connection setup.
115. What is a segment in networking?
     A data unit at the transport layer.
116. What is a datagram?
     A data unit at the network layer, used in UDP.
117. What is UDP?
     User Datagram Protocol, a connectionless transport protocol.
118. What is TCP?
     Transmission Control Protocol, a reliable transport protocol.
119. What is the difference between TCP and UDP?
     TCP is reliable and connection-oriented; UDP is faster but unreliable.
120. What is a checksum?
     A value used to verify data integrity during transmission.
121. What is a CRC?
     Cyclic Redundancy Check for error detection.
122. What is a collision domain?
     A network segment where collisions can occur.
123. What is a broadcast domain?
     A network segment where broadcasts are sent.
124. What is VLAN?
     Virtual Local Area Network for segmenting networks logically.
125. What is a trunk in networking?
     A link carrying multiple VLANs between switches.
126. What is QoS?
     Quality of Service for managing network traffic priority.
127. What is a firewall rule?
     A policy defining allowed or blocked network traffic.
128. What is an ACL?
     Access Control List for defining network access permissions.
129. What is a DMZ?
     Demilitarized Zone, a secure network segment for public-facing services.
130. What is IDS?
     Intrusion Detection System for monitoring network threats.
131. What is IPS?
     Intrusion Prevention System for blocking network threats.
132. What is a honeypot?
     A decoy system to attract and analyze cyberattacks.
133. What is encryption in networking?
     Converting data into a secure format to prevent unauthorized access.
134. What is a cipher?
     An algorithm for encrypting or decrypting data.
135. What is SSL?
     Secure Sockets Layer for secure data transmission.
136. What is TLS?
     Transport Layer Security, the successor to SSL.
137. What is a digital certificate?
     A file verifying the identity of a device or server.
138. What is a public key?
     A key used for encryption in asymmetric cryptography.
139. What is a private key?
     A key used for decryption in asymmetric cryptography.
140. What is a symmetric key?
     A single key used for both encryption and decryption.
141. What is a hash function?
     A function converting data into a fixed-size value for integrity checks.
142. What is a phishing attack?
     A fraudulent attempt to obtain sensitive data via email or websites.
143. What is malware?
     Malicious software designed to harm networks or devices.
144. What is a worm?
     A self-replicating malware spreading across networks.
145. What is a virus?
     Malware requiring user action to spread.
146. What is a Trojan?
     Malware disguised as legitimate software.
147. What is ransomware?
     Malware locking data until a ransom is paid.
148. What is a botnet?
     A network of compromised devices controlled by an attacker.
149. What is a DDoS attack?
     Distributed Denial of Service attack overwhelming a network.
150. What is a man-in-the-middle attack?
     An attack intercepting communication between two parties.
151. What is a packet sniffer?
     A tool capturing and analyzing network packets.
152. What is a wireless network?
     A network using radio waves for connectivity.
153. What is WEP?
     Wired Equivalent Privacy, an outdated wireless security protocol.
154. What is WPA?
     Wi-Fi Protected Access, a wireless security protocol.
155. What is WPA2?
     An improved version of WPA with stronger encryption.
156. What is a rogue access point?
     An unauthorized Wi-Fi access point in a network.
157. What is a MAC filter?
     A security measure allowing only specific MAC addresses to connect.
158. What is a signal amplifier?
     A device boosting wireless network signals.
159. What is a hotspot?
     A location providing Wi-Fi access to the Internet.
160. What is 802.11?
     A set of IEEE standards for wireless LANs.
161. What is Wi-Fi 6?
     The sixth generation of Wi-Fi based on 802.11ax.
162. What is a fiber optic cable?
     A cable using light to transmit data at high speeds.
163. What is UTP cable?
     Unshielded Twisted Pair cable for network connectivity.
164. What is STP cable?
     Shielded Twisted Pair cable with EMI protection.
165. What is a crossover cable?
     A cable connecting similar devices directly, like two computers.
166. What is a straight-through cable?
     A cable connecting different devices, like a computer to a switch.
167. What is a patch cable?
     A short cable connecting devices in a network rack.
168. What is a console cable?
     A cable for configuring network devices like routers.
169. What is a rollover cable?
     A cable with reversed pin assignments for device configuration.
170. What is a T1 line?
     A digital transmission line with a capacity of 1.544 Mbps.
171. What is a DS3 line?
     A digital transmission line with a capacity of 44.736 Mbps.
172. What is a leased line?
     A dedicated communication line between two points.
173. What is MPLS?
     Multiprotocol Label Switching for efficient data routing.
174. What is a circuit-switched network?
     A network establishing a dedicated path for communication.
175. What is a packet-switched network?
     A network transmitting data in packets without a dedicated path.
176. What is a virtual circuit?
     A logical path for data in a packet-switched network.
177. What is ATM?
     Asynchronous Transfer Mode for high-speed data transfer.
178. What is a cell in ATM?
     A fixed-size packet of 53 bytes.
179. What is SONET?
     Synchronous Optical Networking for high-speed data transmission.
180. What is a wavelength in networking?
     A specific frequency of light used in fiber optics.
181. What is DWDM?
     Dense Wavelength Division Multiplexing for multiple data streams.
182. What is a dark fiber?
     Unused fiber optic cable available for lease.
183. What is a network backbone?
     The main infrastructure connecting network segments.
184. What is a core router?
     A high-capacity router at the network backbone.
185. What is an edge router?
     A router connecting a local network to an external network.
186. What is a distribution switch?
     A switch aggregating traffic from access switches.
187. What is an access switch?
     A switch connecting end devices to the network.
188. What is PoE?
     Power over Ethernet for powering devices via network cables.
189. What is a network appliance?
     A specialized device for network functions, like a firewall.
190. What is SDN?
     Software-Defined Networking for centralized network control.
191. What is NFV?
     Network Functions Virtualization for virtualizing network services.
192. What is a load balancer?
     A device distributing network traffic across servers.
193. What is failover?
     Switching to a backup system during a failure.
194. What is redundancy in networking?
     Duplicate systems to ensure reliability.
195. What is a network audit?
     An assessment of network performance and security.
196. What is a traceroute?
     A tool tracing the path of packets to a destination.
197. What is a ping?
     A tool testing network reachability between devices.
198. What is NetBIOS?
     Network Basic Input/Output System for LAN communication.
199. What is SNMP?
     Simple Network Management Protocol for monitoring devices.
200. What is a network administrator’s role?
     Managing and maintaining network infrastructure.

Conclusion

This computer network quiz with answers is your key to mastering networking concepts effortlessly. By practicing these 200 one-liner questions, you’ve strengthened your knowledge and boosted your confidence for exams and certifications. Keep exploring, revisit the quiz, and share it with peers to excel in the dynamic field of computer networks. Stay connected and prepared with our educational resources!

Disclaimer

The computer network quiz with answers provided is for educational purposes only. While sourced from credible platforms, the accuracy of information may vary. Use this quiz as a study aid and verify critical details with official resources before relying on them for exams or professional purposes.

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