CERTIFIED-IN-CYBERSECURITY Question #295: Real Exam Question with Answer & Explanation

The correct answer is C: Application, Presentation, and Session. The OSI model's Application layer corresponds to the TCP/IP model's Application layer, and the OSI model's Presentation layer corresponds to the combination of the TCP/IP model's Presentation and Session layers. Therefore, the three OSI model layers corresponding to the TCP/IP mo

Network Security Concepts

Question

Which three OSI model layers correspond to the TCP/IP model's Application layer?

Options

AApplication, Presentation, and Transport
BPresentation, Session, and Transport
CApplication, Presentation, and Session
DThere is not a direct match (the TCP model was created before the OSI model)

Explanation

The OSI model's Application layer corresponds to the TCP/IP model's Application layer, and the OSI model's Presentation layer corresponds to the combination of the TCP/IP model's Presentation and Session layers. Therefore, the three OSI model layers corresponding to the TCP/IP model's Application layer are Application, Presentation, and Session (see ISC2 Study Guide, Module 4, under Network Protocols). The option stating that there is no direct match is incorrect, as there is a direct correspondence between the two models, although the layer naming and functions differ slightly.

Topics

#OSI Model#TCP/IP Model#Network Layers#Protocol Architectures

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