What is the OSI Model? Name the layers of the 7-Layer OSI Model.

What is the OSI Model? 



The Open System Interconnection 7 Layer Model, a project of the International Organization for Standardization (OSI), provides a clear picture of the network framework by defining each layer and implementing corresponding protocols. Understanding the network framework is an essential part of implementing appropriate security protocols on the network. The framework begins with layer seven on the application layer or top layer then continues to the bottom layer, or layer one, which is the physical layer. Each layer, starting with layer one, serves the layer above it in the hierarchy.


Name the layers of the 7-Layer OSI Model.



(Mnemonic)=All People Seem to Need Data Processing

These correspond to the Application Layer, Presentation Layer, Session Layer, Transport Layer, Network Layer, Data-Link Layer, and Physical Layer. This layer system differs from the TCP/IP model, as it is not based on a hierarchal system.

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