Top 30 Computer Network MCQs with Answers

Looks like you’re gearing up for some hands-on self-assessment in your computer networks field. You can go through the list of our curated top 30 MCQs with answers on computer networks.

These MCQs include various fundamental concepts, including network definitions, architectures, protocols, and models.

For several IT professionals, such as network technicians, network engineers, and system administrators, computer networking is a crucial skill. The industry of computer networking has acknowledged rapid growth over the past 5 years.

Network engineers and system administrators are in high demand due to several key factors.

Primarily, there is a growing reliance on technology across industries, because businesses are constantly expanding their network systems. Hence, there is a need for professionals who can design, implement, maintain, and troubleshoot.

These job roles play a critical role in implementing robust security measures.

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Essential Computer Network MCQs with Answers

To clear a networking interview, you must practice and get familiar with some of the essential computer network MCQs listed below:

Q1. Which amongst the following is the example of Bluetooth?

1. Personal area network
2. Virtual private network
3. Local area network
4. Wide area network

Answer: A. Personal area network

Q2. Which of the following statements defines a computer network?

1. A software used for creating presentations and documents.
2. A physical case protecting the internal components of a computer.
3. A device that presents information on the screen of a computer.
4. A combination of interconnected devices and computers that share and communicate resources.

Answer: D. A combination of interconnected devices and computers that share and communicate resources

Q3. Define Internet

1. A single network
2. Collection of unrelated computers
3. Interconnection of wide area networks
4. Network of interconnected local area networks

Answer: C. Interconnection of wide area networks

Q4. Which, among the following, is the full form of OSI?

1. Operating system interface
2. Open service Internet
3. Open system interconnection
4. Optical service implementation

Answer: C. Open system Interconnection

Q5. Choose the computer network that is built on top of another network.

1. Prior network
2. Chief network
3. Prime network
4. Overlay Network

Answer: D. Overlay Network

Q6. When a collection of multiple computers is displayed as a single coherent system to his client, what is it called?

1. Computer network
2. Networking system
3. Distribution system
4. Mail system

Answer: C. Distributed System

Q7. Which among the following options is not a network layer function?

1. Routing
2. Error control
3. Inter-networking
4. Congestion control

Answer: B. Error control

Q8. What are the number of layers present in the ISO OSI reference model?

1. 4
2. 6
3. 7
4. 5

Answer: C. 7

Q9. In a computer network, what are nodes?

1. The computer that dominates the data
2. The computer that originates the data
3. The computer that roots the data
4. All of the above

Answer: D. All of the above

Q10. In a computer network, how was the single-channel shared by multiple signals?

1. Digital modulation
2. Analog modulation
3. Phase modulation
4. Multiplexing

Answer: D. Multiplexing

Q11. Which device forwards packets between networks by processing the routing information present in the packet?

1. Hub
2. Router
3. Bridge
4. Firewall

Answer: B. Router

Q12. Which layer amongst the all given below does the data link layer receive packets from and cover them into frames for transmission?

1. Network layer
2. Physical layer
3. Transport layer
4. Application layer

Answer: A. Network layer

Q13. Which of the following options is not a Network edge device?

1. Smartphones
2. Servers
3. Switch
4. PC

Answer: C. Switch

Q14. Which networks share the communication channel with all the machines?

1. Broadcast network
2. Unicast network
3. Anycast network
4. Multicast network

Answer: A. Broadcast Network

Q15. Which topology needs a multi-point connection?

1. Star
2. Bus
3. Ring
4. Mesh

Answer: B. Bus

Q16. Select the option that maintains the domain name system.

1. A single computer
2. Distributed database system
3. A Single server
4. None of the above

Answer: B. Distributed database system

Q17. Which network extends the private network across the public network?

1. Local area network
2. Virtual private network
3. Storage area Network
4. Enterprise private network

Answer: B. Virtual private network

Q18. Which of the following layers is responsible for the process of processing delivery in a general Network model?

1. Transport layer
2. Network layer
3. Data link layer
4. Session Layer

Answer: A. Transport layer

Q19. Choose the term for the data communication system within a campus or a building.

1. MAN
2. PAN
3. LAN
4. WAN

Answer: C. LAN

Q20. Which of the following was the first computer network?

1. CNNET
2. NSFNET
3. ASAPNET
4. ARPANET

Answer: D. ARPANET

Q21. A network topology that needs a hub or central controller?

1. Bus
2. Ring
3. Star
4. Mesh

Answer: C. Star

Q22. Name a layer that offers the services to users.

1. Presentation layer
2. Session layer
3. Application layer
4. Physical layer

Answer: C. Application layer

Q23. Which connection is important for a computer to join the internet?

1. Different computer
2. Internet security
3. Internet service provide
4. Internet architecture board

Answer: D. Internet service provider

Q24. Which one of the following allows you to connect and log in to a remote computer?

1. FTP
2. HTTP
3. SMTP
4. Telnet

Answer: C. SMTP

Q25. To render a computer resource unavailable to its intended users, which of the following is used?

1. Virus attack
2. Botnet process
3. Worms attack
4. Denial-of-service attack

Answer: D. Denial-of-service attack

Q26. Which transmission direction is not a legitimate channel?

1. Half duplex
2. Double duplex
3. Full duplex
4. Simplex

Answer: B. Double Duplex

Q27. What is the purpose of ‘Parity bits’?

1. To detect errors
2. Encryption of data
3. To transmit faster
4. To identify the user

Answer: A. To detect errors

Q28. Which transmission medium is most suitable for carrying data in a computer network that is exposed to electrical interference?

1. Optical fiber
2. Microwave
3. Coaxial cable
4. Unshielded twisted pair

Answer: A. Optical fiber

Q29. What does a collection of hyperlink documents on the Internet form?

1. Mailing list
2. Email system
3. World Wide Web
4. Hypertext Markup language

Answer: C. World Wide Web

Q30. What does HTTP stand for?

1. Hypertext transfer program
2. Hypertext tracing protocol
3. Hypertext transfer protocol
4. Hyper terminal tracing program

Answer: C. Hypertext Transfer Protocol

FAQs: Computer Networks

What is the importance of computer networking?

Computer networking provides collaboration and real-time communication, leading to enhanced productivity. Furthermore, computer networking raises efficiency by allowing businesses to share resources, such as storage devices, printers, and servers.

Mention four major uses of computer networks.

The four major uses of computer networks include education and entertainment, e-commerce, resources, sharing, and communication and collaboration.

What is the full form of TCP?

Transmission control protocol is the full form of TCP. It is all communications, standard enabling, application programs, and computing devices to exchange messages over a network.

What do you mean by network protocol?

Network protocol is a set of rules structuring how connected devices communicate across a network to exchange information safely and easily. Protocols act as a common language for multiple devices to proceed with communication irrespective of differences in internal processes, hardware, and software.

Which is the most commonly used computer Network type?

LAN or a local area network is the most commonly used network time that allows users to connect within a nice small distance in the common area.

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