This document defines and describes several key internet services and protocols:
The World Wide Web (WWW) allows documents and resources to be identified by URLs and linked through hyperlinks. File Transfer Protocol (FTP) transfers files between clients and servers. Telnet allows users to log into remote computers. Gopher distributes, searches, and retrieves documents. Internet Protocol (IP) addresses identify devices on a network and locate them. Domain names define administrative control within the internet. Web browsers retrieve and navigate web pages through hyperlinks. Search engines identify items in databases corresponding to user keywords. Electronic mail exchanges digital messages between computer users.