Chapter 5. Understanding the Network Layering Model

IN THIS CHAPTER

One of the most delicious European desserts is the torte, a kind of very rich cake. The torte typically has several (five to eight) layers. Each layer rests its weight on the lower layers and has a different flavor and color. The torte has a firm frosting that covers the crest to the platter.

If you look at how the conceptual network subsystem (or protocol stacks) is designed, you find a similar layering. On the surface it shows a common interface with the layers underneath. Each layer ...

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