Which two layers of the OSI model make up the TCP/IP model Network Interface layer?

Question

Options

• AApplication and Transport
• BTransport and Session
• CPhysical and Data Link
• DSession and Presentation

• A
  4% (2)
• B
  9% (5)
• C
  86% (48)
• D
  2% (1)

Explanation

The TCP/IP model is a simplified 4-layer model compared to the OSI model's 7 layers. The TCP/IP Network Interface layer (also called the Link layer) combines the functions of both the OSI Physical layer (Layer 1 - raw bit transmission over cables/wireless) and the OSI Data Link layer (Layer 2 - MAC addressing, framing, and local network delivery). The Application and Transport layers map to the TCP/IP Application and Transport layers respectively. Session and Presentation are OSI layers that are folded into the TCP/IP Application layer, not the Network Interface layer.

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