The term "server" refers to a specialized computer or piece of hardware that runs server software and delivers services to other computers or clients. A server performs several roles and is available in a variety of configurations to accommodate various applications. Khara, Kanika, and Anusha are friends who use the Internet to communicate. They each have their own laptop computer but need to connect with each other through a phone line to chat online. Their school provides them with two computer terminals, one for use by Khara and another for Anusha. You will learn about the differences among server types as you explore ways that they can be used.