Layered protocols 1.Name the seven layers of the OSI Networking Reference model,

Question

Layered protocols

1.Name the seven layers of the OSI Networking Reference model, from the lowest to the highest.

2.List 2 advantages and 2 disadvantages of strictly conforming to a layered networking standard, such as the OSI/ISO networking model.

3.Data encryption of network traffic can, arguably, be employed in a number of layers of the OSI/ISO Reference model. If you were to employ encryption in exactly 2 layers, which layers would you choose, and why?

4.A system uses an n-layer protocol hierarchy. Applications generate messages of M bytes each. At each of the layers, an h byte header is added. What fraction of the network bandwidth is filled with headers?

Explanation / Answer

If you post more than 1 question, as per chegg guidelines I have to solve only first question

Ques 1.

The layers are:

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