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Computer Networking MCQs

Study important topics of Computer Networking step by step with our well-organized Networking MCQs at JobExams. These questions cover IP Addressing, OSI Model, TCP/IP, network devices (like routers and switches), types of networks (LAN, WAN, MAN), protocols, and commands like ipconfig and many more. These MCQs are very helpful for IT-related job tests such as PPSC, NTS, FPSC, SPSC, BPSC, CSS, and for students preparing for computer science exams and interviews.

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1 Computer Networking MCQs

Which protocol provides reliable communication using acknowledgements?

  • UDP
  • IP
  • TCP
  • FTP
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Correct Answer: C. TCP

Explanation: TCP (Transmission Control Protocol) is a connection-based protocol that provides reliable communication. It uses acknowledgements ... Read More Details

2 Computer Networking MCQs

Which IP address range is reserved for private networks?

  • 192.0.0.0 – 192.255.255.255
  • 10.0.0.0 – 10.255.255.255
  • 172.0.0.0 – 172.255.255.255
  • 8.8.8.8 – 8.8.8.9
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Correct Answer: B. 10.0.0.0 – 10.255.255.255

Explanation: The IP range 10.0.0.0 – 10.255.255.255 is reserved for private networks. These IPs are not ... Read More Details

3 Computer Networking MCQs

Which topology uses a central hub to connect all devices?

  • Bus
  • Ring
  • Mesh
  • Star
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Correct Answer: D. Star

Explanation: Star topology is the type of network where all devices are connected to a central ... Read More Details

4 Computer Networking MCQs

In networking, what is the function of a DNS server?

  • Converts IP to MAC address
  • Converts domain names to IP addresses
  • Sends data to the next hop
  • Encrypts outgoing messages
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Correct Answer: B. Converts domain names to IP addresses

Explanation: A DNS (Domain Name System) server is used to convert domain names into IP addresses. ... Read More Details

5 Computer Networking MCQs

Which protocol is used to send email?

  • HTTP
  • FTP
  • SMTP
  • POP
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Correct Answer: C. SMTP

Explanation: SMTP stands for Simple Mail Transfer Protocol. It is used to send emails from one ... Read More Details

6 Computer Networking MCQs

What is the default port number for HTTP?

  • 20
  • 21
  • 80
  • 443
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Correct Answer: C. 80

Explanation: The default port number used by HTTP (HyperText Transfer Protocol) is 80. When you open ... Read More Details

7 Computer Networking MCQs

Which command is used to check the IP configuration of a computer?

  • ping
  • tracert
  • ipconfig
  • netstat
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Correct Answer: C. ipconfig

Explanation: The ipconfig command is used in Windows to check the IP address and network details ... Read More Details

8 Computer Networking MCQs

Which device connects two different networks?

  • Switch
  • Hub
  • Router
  • Bridge
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Correct Answer: C. Router

Explanation: Router. A router is a networking device that connects two or more different networks and ... Read More Details

9 Computer Networking MCQs

Which layer of the OSI model is responsible for data encryption?

  • Session Layer
  • Presentation Layer
  • Transport Layer
  • Application Layer
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Correct Answer: B. Presentation Layer

Explanation: Presentation Layer. In the OSI model, the Presentation Layer (Layer 6) is responsible for the ... Read More Details

10 Computer Networking MCQs

What does IP stand for in computer networking?

  • Internet Path
  • Internal Protocol
  • Internet Protocol
  • Integrated Process
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Correct Answer: C. Internet Protocol

Explanation:

IP stands for Internet Protocol in computer networking. It is one of the core protocols ... Read More Details

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