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Lecture Computer networking: A top-down approach (6/e): Chapter 5 - James F. Kurose, Keith W. Ross
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How are the network-layer datagrams encapsulated in the link-layer frames for transmission over a single link? Are different link-layer protocols used in the different links along the communication path? How are transmission conflicts in broadcast links resolved? Is there addressing at the link layer and, if so, how does the link-layer addressing operate with the network-layer addressing we learned about in Chapter 4? And what exactly is the difference between a switch and a router? We’ll answer these and other important questions in this chapter.