CISSP – Information Systems Security Architecture Professional (ISSAP) — Question 47

Which of the following layers of the OSI model corresponds to the Host-to-Host layer of the TCP/IP model?

Answer options

• A. The transport layer
• B. The presentation layer
• C. The session layer
• D. The application layer

Correct answer: A

Explanation

The correct answer is A, as the transport layer of the OSI model is responsible for host-to-host communication, which aligns with the function of the Host-to-Host layer in the TCP/IP model. Options B, C, and D refer to layers that handle different aspects of communication, such as data formatting, session management, and application services, rather than host-to-host connectivity.