N10-005 Question #598: Real Exam Question with Answer & Explanation

The correct answer is C: 4. The Transport layer in the TCP/IP model maps directly to Layer 4 (Transport) in the OSI model. Both layers handle end-to-end communication using protocols like TCP and UDP.

Question

The Transport Layer of the TCP/IP model corresponds to which of the following layers of the OSI model?

Options

Explanation

The Transport layer in the TCP/IP model maps directly to Layer 4 (Transport) in the OSI model. Both layers handle end-to-end communication using protocols like TCP and UDP.

Common mistakes.

A. OSI Layer 1 is the Physical layer, which corresponds to the Network Access (Link) layer in TCP/IP, not the Transport layer.
B. OSI Layer 3 is the Network layer, which corresponds to the Internet layer in TCP/IP, handling logical IP addressing and routing.
D. OSI Layer 5 is the Session layer, which has no direct equivalent in the TCP/IP model and is generally absorbed into the Application layer.

Concept tested. TCP/IP to OSI model layer mapping

Reference. https://docs.cisco.com/en/US/docs/internetworking/technology/html/OSI-TCP.html

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