Role of Session Layer in OSI Model

165 pts.
Tags:
OSI Model
TCP
Windows Server 2003
Hi, I am facing problems in what does session layer do.. exactly.

i know that session layer is used with TCP communication only. So Session layer is the one that controls its establishment, continuation and termination of sessions by rasing flags : FIN, RST etc..

 

please explain......................



Software/Hardware used:
Windows server 2003
ASKED: June 6, 2010  8:56 AM
UPDATED: June 7, 2010  1:31 PM

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The session layer performs the following functions:

Communication with the Presentation layer above.
Organize and manage one or more connections per application, between hosts.
Communication with the Transport layer below.
The overall communication itself is know session.

An example application is web conferencing, in which the streams of audio and video must be synchronous to avoid so-called lip synch problems. Floor control ensures that the person displayed on screen is the current speaker.
Another application is in live TV programs, where streams of audio and video need to be seamlessly merged and transitioned from one to the other to avoid silent airtime or excessive overlap.

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