Question

In OSI model, when data is sent from device A to device B, the 5th layer to receive data at B is _________

(a) Application layer

(b) Transport layer

(c) Link layer

(d) Session layer

I had been asked this question in an internship interview.

This key question is from Reference Models topic in section Computer Networks Introduction of Computer Network

Answer 1

The correct option is (d) Session layer

For explanation I would say: In OSI reference model, the fifth layer is Session layer. Session layer provides the mechanism for opening, closing and managing a session between end-user application processes. In TCP/IP protocol stack, the functions of the session layer are handled by the transport layer itself and thus the session layer is missing from the TCP/IP model.