A protocol is� the set of rules for communication between computers in a network.� If you didn't have protocols, computers would be unable to talk to each other.�
Is the client/server protocol used by WWW service that allows clients to interact with servers in order to perform specified, Web-related tasks.
For example: when a you click a hyperlink on a Web page, HTTP is what allows the server to replace the existing page with the new page on your screen.
Moves files between two computers on a TCP/IP network. FTP uses TCP (Transmission Control Protocol (TCP) for all communications and data exchanges between a client and server.
Before the server will transfer the files, it requires you to provide a valid username and password.
Anonymous FTP is used at public network sites. It� allows file transfer using a standard username, "anonymous", plus the user's e-mail address as the password.
Is protocol used to exchange e-mail on a TCP/IP network.� It also uses TCP as it transport protocol.� SMTP specifies that all messages must be text. To find out more information you can read RFC 821.SMTP Gateway
Is a computer program that translates e-mail messages from one format to another to interconnect two different e-mail systems when one system uses SMTP and the other one doesn't.
This protocol is used to read messages posted in news groups on the Internet.� It too uses TCP as its transport protocol for all exchanges between the news client and server.
POP3 is a standard e-mail server commonly used on the Internet. It provides a message store that holds incoming e-mail until a user logs on and downloads the data. POP3 is a simple system with little selectivity, meaning that all pending messages and attachments get downloaded at the same time. POP3 uses SMTP message format.
NOTE:� All the above protocols are a part of the TCP/IP suite.