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OSI Reference Model
The cost reference model was developed by the ISO for international standardization of protocols used at various layers. The model uses well defined descriptive layers that specify what happens at each stages of data processing during transmission. It does not specify the exact services and protocols that will be sued in each layer.
The OSI model has seven layers. Each of the layers is described next.
One of the main objective of OSI RM is to define develop protocols to perform the functions of each layer and implementation detail of the services it is providing.
Open systems interconnection Reference Models (OSI RM)
OSI RM Architecture of network is shown in figure shown below.
figure OSI reference Model
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