OSI Stack

Open System A




Open System B



7






7


Application


6






6


Presentation


5






5


Session


4






4


Transport


3



3



3


Network


2



2



2


Data Link


1






1


Physical


  Physical Layer
  Data Link Layer
  Network Layer
  Transport Layer
  Session Layer
  Presentation Layer
  Application Layer
 Introduction to Networking 
  Internet Protocol
 Physical layer  


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