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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 primary function of the Network Layer?

  • Media access control
  • Logical addressing and routing
  • Data encryption
  • Flow control
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Correct Answer: B. Logical addressing and routing

Explanation:

The primary function of the Network Layer in the OSI model is to handle logical ... Read More Details

2 Computer Networking MCQs

Which of the following protocols helps prevent data collisions on Ethernet networks?

  • ARP
  • DNS
  • CSMA/CD
  • HTTP
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Correct Answer: C. CSMA/CD

Explanation: CSMA/CD (Carrier Sense Multiple Access with Collision Detection) is a protocol used in traditional Ethernet ... Read More Details

3 Computer Networking MCQs

CRC (Cyclic Redundancy Check) is used for:

  • Address resolution
  • Error detection in frames
  • Data encryption
  • Routing
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Correct Answer: B. Error detection in frames

Explanation: CRC (Cyclic Redundancy Check) is a technique used for error detection in data frames at ... Read More Details

4 Computer Networking MCQs

What is the role of the MAC sublayer in the Data Link Layer?

  • Encrypt data
  • Provide logical addressing
  • Control access to the physical medium
  • Manage sessions between hosts
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Correct Answer: C. Control access to the physical medium

Explanation:

The MAC (Media Access Control) sublayer is one of the two parts of the Data ... Read More Details

5 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

6 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

7 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

8 Computer Networking MCQs

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

  • Network Layer
  • Transport Layer
  • Data Link Layer
  • Application Layer
0 Comments
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

9 Computer Networking MCQs

Which device operates at the Data Link Layer?

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

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

10 Computer Networking MCQs

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

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

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

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