To communicate across the Internet, a program must follow a specific set of RULES, called protocols. These protocols may specify the SIZE and format of the program's ELECTRONIC messages or how programs synchronize messages. In short, who sends the first message and what type of REPLY the sender expects.

The primary protocol on the Internet is TCP/IP (the Transmission Control Protocol/Internet Protocol), The TCP/IP protocols define the rules that computers and peripherals on the Internet use to communicate. For example, TCP/IP protocols defines how a program finds a particular device on a network, the format the program must use to send the device data, how the program should check for errors and so on. 

To communicate across the Internet, a program must follow a specific set of rules, called protocols. These protocols may specify the size and format of the program's electronic messages or how programs synchronize messages. In short, who sends the first message and what type of reply the sender expects.

The primary protocol on the Internet is TCP/IP (the Transmission Control Protocol/Internet Protocol), The TCP/IP protocols define the rules that computers and peripherals on the Internet use to communicate. For example, TCP/IP protocols defines how a program finds a particular device on a network, the format the program must use to send the device data, how the program should check for errors and so on.