Networking Protocols
When some people speak about networking protocols, a reference is made to the Open Systems Interconnection (OSI) model. With this model, all of the networking protocols are categorized into one of seven types of protocols, where each type is represented visually as a layer. The visualization of layers is intended to help people understand the relationship between the various protocols and illustrate their dependencies. As it turns out, the only feature of the OSI model that has gained much respect or popularity is the idea of protocols represented as layers. However, the use of these specific seven layers is rarely seen as more than a theoretical academic model, and most people use a four-layer model.
Protocol Layers
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