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【单选题】
关于因特网中路由器和局域网中交换机叙述错误的是()。A.
路由器用来互连不同的网络，交换机只是在一个特定的网络中工作。
B.
路由器专门用来转发分组，交换机还可以许多主机。
C.
路由器和交换机都使用统一的IP协议。
D.
路由器根据目的网络地址找出下一跳(即下一个路由器)，而交换机则根据目的站所接入的交换机号找出下一跳(即下一个交换机)。
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A.
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B.
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C.
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D.
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