N10-005 · Question #768
Which of the following TCP/IP model layers combines four OSI model layers?
The correct answer is A. Application Layer. The TCP/IP Application layer consolidates more OSI layers than any other TCP/IP layer, mapping to the OSI Session, Presentation, and Application layers.
Question
Which of the following TCP/IP model layers combines four OSI model layers?
Options
- AApplication Layer
- BInternet Layer
- CTransport Layer
- DNetwork Interface Layer
How the community answered
(45 responses)- A89% (40)
- B7% (3)
- C2% (1)
- D2% (1)
Why each option
The TCP/IP Application layer consolidates more OSI layers than any other TCP/IP layer, mapping to the OSI Session, Presentation, and Application layers.
The TCP/IP model's Application layer combines the OSI Session layer (5), Presentation layer (6), and Application layer (7) into a single layer. This consolidation is one of the key structural differences between the two models. Some curriculum references also include upper transport functions, making it the TCP/IP layer that absorbs the most OSI layers.
The TCP/IP Internet layer maps only to OSI layer 3 (Network), combining just one OSI layer.
The TCP/IP Transport layer maps directly to OSI layer 4 (Transport), combining only one OSI layer.
The TCP/IP Network Interface layer maps to OSI layers 1 (Physical) and 2 (Data Link), combining only two OSI layers.
Concept tested: TCP/IP vs OSI model layer mapping
Source: https://learn.microsoft.com/en-us/windows-hardware/drivers/network/windows-network-architecture-and-the-osi-model
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