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200-150 · Question #93
200-150 Question #93: Real Exam Question with Answer & Explanation
The correct answer is D: 5. The TCP/IP (Internet protocol suite) model condenses the seven OSI layers into four layers, with the TCP/IP Application layer absorbing OSI layers 5 (Session) and 6 (Presentation) alongside OSI layer 7 (Application).
Question
Which two layers of the OSI model are combined in the Internet protocol suite application layer? (Choose two.)
Options
- A2
- B3
- C4
- D5
- E6
- F7
Explanation
The TCP/IP (Internet protocol suite) model condenses the seven OSI layers into four layers, with the TCP/IP Application layer absorbing OSI layers 5 (Session) and 6 (Presentation) alongside OSI layer 7 (Application).
Common mistakes.
- A. OSI Layer 2 (Data Link) maps to the Network Access layer of the TCP/IP model, not the Application layer.
- B. OSI Layer 3 (Network) maps to the Internet layer of the TCP/IP model, not the Application layer.
- C. OSI Layer 4 (Transport) maps directly to the Transport layer of the TCP/IP model, remaining a distinct separate layer.
- F. OSI Layer 7 (Application) is the named equivalent of the TCP/IP Application layer and is not simply 'combined in' - it is the direct counterpart that gives the layer its name.
Concept tested. OSI to TCP/IP model layer mapping and consolidation
Reference. https://www.cisco.com/c/en/us/support/docs/ip/routing-information-protocol-rip/13769-5.html
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