Answer Posted / rambabu

application layer provides interaction for user with his
application. this provides flexibility for end user...
application layer gets this flexibility from presentation
layer. because presentation layer takes care of data
formating(i.e encoding, decoding).
presentation layer takes care of platform. i.e. it
translates from one system understandable format to other
machine format.
ex:
sender m/c is vt windows and receiver is Linux user then
understandability care b/n that 2 m/c's is taken by
presentation layer.

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