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