When a user attempts to make a connection to another system, he will generally specify the system by name, rather than Internet address. His system has to translate that name to an address before it can do anything. Generally, only a few systems have the database used to translate names to addresses. So the user’s system will want to send a query to one of the systems that has the database. Of course TCP does more than just break things up into datagrams.
Certainly the ARPAnet is the best-known TCP/IP network. However as of June, 87, at least 130 different vendors had products that support TCP/IP, and thousands of networks of all kinds use it. The internet is a global network of computers that use protocols and data packets to exchange information.
He has written textbooks on computer science topics such as operating systems, computer networks, computer organization, and cryptography. … Read More