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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 layerI 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»

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.



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