Your computer is connected to a host computer that has access to the internet system and passes internet traffic to you. On one side of that host is the connection to you by way of a modem or a network line. On the other side of that host are communications devices that give access to the Internet's backbone system. One of those communicator devices is a router. A router is a special kind of computer that understands internet addressing and passes internet data to other routers until that data has found its destination router and its associated host. The router is connected by a high speed cable to other routers. Think of the high speed cables as highway road beds, the routers as highway road beds, the router as highway interchanges, and the hosts as the towns that the data needs to visit.
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