The OSI Network Model

The OSI Network Model

The Open Systems Interconnection (OSI) model offers a high-level representation of network systems. The OSI model contains seven layers that fully describe fundamental network concepts from the application down to the physical method of data transmissions. Figure 17-1 illustrates the seven layers of the OSI model.

Figure 17-1 The OSI network model

Relative to the OSI model, NetBIOS fits primarily into the session and transport layers.