Of course this should be impossible, but well-designed networks are built to cope with “impossible” conditions.At this point, it’s possible that no more headers are needed. If your computer happens to have a direct phone line connecting it to the destination computer, or to a gateway, it may simply send the datagrams out on the line . The Internet is a collection of networks, including the Arpanet, NSFnet, regional networks such as NYsernet, local networks at a number of University and research institutions, and a number of military networks. The term “Internet” applies to this entire set of networks. The subset of them that is managed by the Department of Defense is referred to as the “DDN” .
- The Transmission Control Protocol is the “TCP” of TCP/IP and enables network hosts to establish connections which may be used to exchange data streams.
- TCP/IP implementations differ in the approach they take