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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 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

2 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

3 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

4 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

5 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

6 Computer Networking MCQs

What is the primary function of the Physical Layer in the OSI Model?

  • Route data between networks
  • Convert data to electrical signals
  • Provide error detection
  • Encrypt data before transmission
0 Comments
Correct Answer: B. Convert data to electrical signals

Explanation: The Physical Layer is the lowest layer in the OSI model. Its main job is ... Read More Details

7 Computer Networking MCQs

What is the main difference between the OSI and TCP/IP models?

  • OSI has 4 layers and TCP/IP has 7
  • TCP/IP is theoretical, OSI is practical
  • OSI is a reference model, TCP/IP is used in real-world networking
  • Both models are identical
0 Comments
Correct Answer: C. OSI is a reference model, TCP/IP is used in real-world networking

Explanation: The main difference between the OSI and TCP/IP models is how they are used and ... Read More Details

8 Computer Networking MCQs

Which of the following is NOT a layer in the OSI model?

  • Transport Layer
  • Encryption Layer
  • Presentation Layer
  • Session Layer
0 Comments
Correct Answer: B. Encryption Layer

Explanation:

The OSI model has 7 well-defined layers, and each one has a specific role in ... Read More Details

9 Computer Networking MCQs

In OSI, data encapsulation starts from which layer?

  • Physical Layer
  • Data Link Layer
  • Application Layer
  • Network Layer
0 Comments
Correct Answer: C. Application Layer

Explanation: Data encapsulation is the process of adding extra information to data as it moves through ... Read More Details

10 Computer Networking MCQs

Which model is used more practically in real-world networking?

  • OSI Model
  • TCP/IP Model
  • Bluetooth Model
  • GSM Model
0 Comments
Correct Answer: B. TCP/IP Model

Explanation: The TCP/IP model is used more practically in real-world networking. It is the model that ... Read More Details

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