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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

What is the data unit at the Data Link Layer called?

  • Packet
  • Frame
  • Segment
  • Bit
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Correct Answer: B. Frame

Explanation: In the OSI model, each layer has a specific name for the data it handles. ... Read More Details

2 Computer Networking MCQs

What is the primary responsibility of the Data Link Layer?

  • Path determination
  • Logical addressing
  • Error detection and correction
  • End-to-end delivery
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Correct Answer: C. Error detection and correction

Explanation: The Data Link Layer is the second layer in the OSI model. Its main job ... Read More Details

3 Computer Networking MCQs

Which layer of OSI is concerned with voltage levels, timing, and cable types?

  • Presentation Layer
  • Session Layer
  • Physical Layer
  • Network Layer
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Correct Answer: C. Physical Layer

Explanation: The Physical Layer is the first layer of the OSI model. It is directly responsible ... Read More Details

4 Computer Networking MCQs

Modulation and demodulation (as in modems) are part of which OSI layer?

  • Transport Layer
  • Data Link Layer
  • Network Layer
  • Physical Layer
0 Comments
Correct Answer: D. Physical Layer

Explanation: Modulation is the process of converting digital data into analog signals for transmission, and demodulation ... Read More Details

5 Computer Networking MCQs

Which device regenerates signals to extend network range at the Physical Layer?

  • Bridge
  • Repeater
  • Switch
  • Router
0 Comments
Correct Answer: B. Repeater

Explanation: A Repeater is a network device that works at the Physical Layer of the OSI ... Read More Details

6 Computer Networking MCQs

What kind of data transmission is handled by the Physical Layer?

  • Logical addressing
  • End-to-end encryption
  • Raw bit stream
  • Data formatting
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Correct Answer: C. Raw bit stream

Explanation: The Physical Layer is the first and lowest layer of the OSI model. It is ... Read More Details

7 Computer Networking MCQs

Which of the following is a Physical Layer standard?

  • Ethernet (IEEE 802.3)
  • IP
  • TCP
  • FTP
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Correct Answer: A. Ethernet (IEEE 802.3)

Explanation: Ethernet (IEEE 802.3) is a standard that works at the Physical Layer and also partly ... Read More Details

8 Computer Networking MCQs

The unit of data at the Physical Layer is:

  • Frame
  • Packet
  • Bit
  • Segment
0 Comments
Correct Answer: C. Bit

Explanation:

The unit of data at the Physical Layer of the OSI model is called a ... Read More Details

9 Computer Networking MCQs

Which type of addressing is used at the Physical Layer?

  • IP Address
  • MAC Address
  • Port Number
  • No addressing
0 Comments
Correct Answer: D. No addressing

Explanation: The Physical Layer in the OSI model does not use any type of addressing. It ... Read More Details

10 Computer Networking MCQs

Which of the following device used at the Physical Layer?

  • Router
  • Switch
  • Hub
  • Firewall
0 Comments
Correct Answer: C. Hub

Explanation: The Physical Layer of the OSI model is responsible for sending raw bits over a ... Read More Details

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