From the course: Network Forensics
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Network models
- [Instructor] Network models are conceptual designs that describe how a computer network is supposed to operate to accomplish its ultimate goal, namely delivering packets from one host to another. The most widely accepted design concept for network models is based on layers that partition various network tasks into groups of closely related networking functions. For example, the physical layer focuses on standards and protocols that address how to transform a network packet into a signal, depending on the medium to be used for transmission. As I have already mentioned, electrical signals, light pulses, and air are popular media options. One of the benefits of adopting the layered approach is the separation of concerns. What I mean is the ability to concentrate on the layer of your choice when developing technologies without worrying about the other layers, as long as there are clearly defined ways of how one layer interfaces with another. In our previous lessons, we already touched…
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