What is client/server computing?

In Summary:

Client/server computing is a common networking model which enables many users to access information in an efficient manner. Generally, the user's computer is called the client and the machine that contains the information being accessed is called the server.

The client computer runs an application called a client program. A client program enables a user to send a request for information to the server and read the results that the server sends back. The server computer runs a server program which processes requests and sends results back to the client. Most Internet transactions, such as FTP, e-mail and accessing web pages are based on client/server networking.