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主要通过对网络拓扑结构的分析,区分不同拓扑结构的优缺点;对广域网内的两种数据传输方式做出比较,得出广域网所要采用的拓扑结构。
Mainly through the analysis of the network topology, the distinction between the advantages and disadvantages of different topologies; the two kinds of data transmission within the WAN to make a comparison, come to the topology to be adopted by the WAN.