N10-005 · Question #788
Which of the following OSI model layers are present in the application layer of the TCP/IP model? (Select TWO).
The correct answer is D. Session E. Presentation. The TCP/IP application layer is a collapsed model that combines the top three OSI layers: Application (7), Presentation (6), and Session (5), so Session and Presentation are the two correct answers.
Question
Which of the following OSI model layers are present in the application layer of the TCP/IP model? (Select TWO).
Options
- AData Link
- BTransport
- CNetwork
- DSession
- EPresentation
How the community answered
(42 responses)- A2% (1)
- B5% (2)
- C2% (1)
- D90% (38)
Why each option
The TCP/IP application layer is a collapsed model that combines the top three OSI layers: Application (7), Presentation (6), and Session (5), so Session and Presentation are the two correct answers.
The Data Link layer corresponds to the Network Access (or Link) layer in the TCP/IP model, not the application layer.
The Transport layer exists as its own distinct layer in both the OSI and TCP/IP models and is not part of the TCP/IP application layer.
The Network layer maps to the Internet layer in the TCP/IP model, not the application layer.
The OSI Session layer (layer 5) is absorbed into the TCP/IP application layer, handling session establishment, maintenance, and termination between applications. The OSI Presentation layer (layer 6) is also absorbed, handling data formatting, encryption, and translation. Both layers exist within the TCP/IP application layer because TCP/IP does not distinguish between them as separate layers.
Concept tested: OSI to TCP/IP model layer mapping
Source: https://learn.microsoft.com/en-us/windows-server/networking/technologies/nic-teaming/nic-teaming
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