[求助]何为路由器？...

什么是路由器？他的作用和原理还有工作方式又是什么？

]路由器---router ]WAN设备，广域网通讯过程根据 地址（网际层工作）寻找到达目的地 ]的路径，此过程在广域网中称路由--routing,路由器负责各段广域网 和 ]局域网间根据地址建立路由，将数据送到最终目的地~ ] Router 　　Routes packets to remote networks by examining the packet's network source and destination address. Routers reduce broadcast storms because they don't route broadcast packets. Routers can connect dissimilar network architectures. The destination address of the packet must match an entry in the routing table of the router; otherwise, the packet is discarded. Cisco routers run on the IOS- Internetworking Operating System. IOS is the Cisco's operating system. Cisco router can route over 20 different protocols. A separate routing table is maintained for each protocol. CCNA exam concentrates mostly on 2 routable protocols-IP and IPX. Routers operate at the Network layer of the OSI model.

非常感谢，但是。。。。。能否再详细点？

是不是可以自己拨号连上网络的?

文件交流中心有更具体的学习资料。。。可去那下载。。。。