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1 Computer Networking MCQs

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

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

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

2 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

3 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

4 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
0 Comments
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

5 Computer Networking MCQs

Which of the following is a Physical Layer standard?

  • Ethernet (IEEE 802.3)
  • IP
  • TCP
  • FTP
0 Comments
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

6 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

7 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

8 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

9 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

10 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

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