题目内容
There are two fundamental approaches to move data through a network of links and switches: circuit switching and ____. And in a circuit-switched network, a circuit in a link is implemented with either ____ or TDM.
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Describe the layers in the Internet protocol stack from top to down: application layer, ____ layer, ____ layer, ____ layer and physical layer.
OSI reference model have ____ layers.
Suppose users share a 2 Mbps link. Also suppose each user transmits continuously at 1 Mbps when transmitting, but each user transmits only 20 percent of the time. a. When circuit switching is used, how many users can be supported? ____ users.
Packet switching allows more users to use network than circuit switching.
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