The client/server principle refers to the two components of a centralized computer network: client and server machines. Clients request information and servers send them the requested infomration. For example, when an individual uses his computer to look at a Web page, his computer acts as the client, and the computer hosting the Web page is the server. Browsers enable the connection between clients and servers. During the 1990s, Netscape, an outgrowth of the early browser Mosaic, and Internet Explorer were the dominant browsers. Eventually, Microsoft’s Internet Explorer became the dominant browser. Other frequently used browsers are Mozilla Firefox and Safari.