Session Layer in OSI Reference Model| Layer 5 | Session Layer in Computer Network | Tutorial
Session Layer:
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Session layer in OSI reference model is responsible for establishing, maintaining and terminating the sessions.
Ø Session Layer is also called as Layer 5 of OSI layer.
Ø Session Layer is also called as Layer 5 of OSI layer.
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It deals with sessions or interactions between the
applications(Live example of Phone call)
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Session ID is used to identify a session or interaction.
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Ex: RPC,SQL,NFS
Specific Responsibilities of Session Layer in Computer Network:
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Dialog control: The session layer allows two systems to enter into a dialog. It allows the communication
between two processes to take place in either half-duplex
(one way at a time) or full-duplex
(two ways at a time) mode.
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Synchronization: The session layer allows a process to add checkpoints, or synchronization
points, to a stream of data. For example, if a system is sending a file
of 2000 pages, it is advisable to insert checkpoints after every 100 pages to
ensure that each 100-page unit is received and acknowledged independently.
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