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Lecture Computer networking: A top-down approach (6/e): Chapter 4 - James F. Kurose, Keith W. Ross

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Chapter 4: Network layer. In this chapter, we’ll learn exactly how the network layer implements the hostto-host communication service. We’ll see that unlike the transport and application layers, there is a piece of the network layer in each and every host and router in the network. Because of this, network-layer protocols are among the most challenging in the protocol stack.

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