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The Open Systems Interconnection (OSI) model was developed by the International Organization for Standardization (ISO). It describes the flow of data from one computer to another.


The OSI Model is also called the ISO OSI Reference Model. It is a hypothetical model consisting of seven layers. Physical Layer, Data Link Layer, Network Layer, Transport Layer, Session Layer, Presentation Layer, and Application Layer ) There are seven layers of the OSI model.

Each layer performs specific operations on the data according to the functions of the previous layer, the application, presentation and session layers are called upper layers.
5 months ago   0

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