The Internet is a () network of networks which interconnects () ranging from the simplest personal computers to the most sophisticated mainframes and supercomputers. This network of networks is used for an extraordinary range of purposes long distance collaborations, retrieving free software and documents, () library catalogs, () in to supercomputers - the list of current Internet activities and () is large and the range of possible future applications is as unlimited as our imagination.
The Internet is a ()An internet is a combination of networks connected by () . When a datagram goes from a source to a () , it will probably pass many () until it reaches the router attached to the destination network. A router receives a () from a network and passes it to another network. A router is usually attached to several networks. When it receives a packet, to which network should it pass the packet The decision is based on optimization: Which of the available () is the optimum pathway
An internet is a combination of networks connected by ().我来回答: