The Open Source Interconnection (OSI) model
This reference model is just a reference for developers to utilize while they create the protocols and devices that users will use to connect to the network. This layered model has some advantages, such as these:
- The communication process comprises components that allow for easier development and troubleshooting
- By following standards, different types of equipment and software can communicate with each other
- A change in one layer does not affect other layers
- The standardization of the components allows multiple organizations to develop and deploy components
By using the OSI model, you can have hosts from Microsoft, Apple, UNIX, and Linux connected and communicating to the same network. As shown in Figure 11.1, you can see that the OSI model is made up of seven different layers. The layers are as follows:
Figure 11.1: OSI model
You can use a mnemonic to remember the order from layer...
