Understanding the different layers

From a technical point of view, the entire networking model is divided into multiple layers. This model is also referred to as the OSI (Open Systems Interconnection) model. Each layer has a special significance and must be understood properly to be able to interact with other layers of the topology.

Getting ready

To work through this recipe, you will need a machine running Windows.

How to do it…

In this recipe, we will see how easy it is to understand the different layers of the networking topology. Look at the following diagram:

How it works…

To understand the OSI model, we have to look at the model from the bottom of the stack to the top. The layers of the OSI model are:

• Physical layer: This establishes the actual physical connection to the network. This is defined by whether we are using copper wire or fiber optics. It defines the network topology that is used, ring or bus, and so on. It also defines the transmission mode: whether it is simplex, half duplex...