Why should we care about the OSI Reference Model ?
What is the main purpose for creating this osi model?
why it is a layered model?
message's can transfer from one place to other .and the message not demaged for other . so this model can be create . they have 7 layers r there
1. physical level
2.data level
3.tranport level
4.session level
5.application level
6.network level
7.presentation level
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