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OSI MODEL with its layer

Introduction to OSI model

The OSI model is developed by ISO (International Standard organization). It deals with systems that are open to communication with other system that’s why it is also called as ISO – OSI reference model. The ISO is the organization and OSI is not a protocol it is a model for designing an architecture that is flexible and robust. It allows communication between all types of computer system. An OSI model has seven layers. These are

 

Seven Layers of OSI Model

Seven Layers of OSI Model

In a single machine each layer provides service to upper layer and use service from below layer. For example Layer 6 provides service to layer 7 and use service from layer 5. This processes that communicate at given layer is known as peer to peer process. The (more…)

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