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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 of the following is responsible for flow control and acknowledgment of frames?

  • MAC Sublayer
  • LLC Sublayer
  • Transport Layer
  • Application Layer
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Correct Answer: B. LLC Sublayer

Explanation: The LLC (Logical Link Control) is a sublayer of the Data Link Layer in the ... Read More Details

2 Computer Networking MCQs

Which of the following is a protocol used at the Data Link Layer?

  • IP
  • TCP
  • ARP
  • PPP
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Correct Answer: D. PPP

Explanation: PPP (Point-to-Point Protocol) is a protocol used at the Data Link Layer of the OSI ... Read More Details

3 Computer Networking MCQs

The Data Link Layer is divided into two sublayers. What are they?

  • MAC and LLC
  • IP and TCP
  • HTTP and FTP
  • SMTP and DNS
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Correct Answer: A. MAC and LLC

Explanation:

The Data Link Layer in the OSI model is divided into two sublayers: MAC (Media ... Read More Details

4 Computer Networking MCQs

MAC addresses are used in which layer of the OSI model?

  • Network Layer
  • Transport Layer
  • Data Link Layer
  • Application Layer
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Correct Answer: C. Data Link Layer

Explanation: MAC (Media Access Control) addresses are used at the Data Link Layer, which is Layer ... Read More Details

5 Computer Networking MCQs

Which device operates at the Data Link Layer?

  • Router
  • Repeater
  • Switch
  • Gateway
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Correct Answer: C. Switch

Explanation: A Switch is a device that operates at the Data Link Layer (Layer 2) of ... Read More Details

6 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

7 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

8 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

9 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

10 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

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