IP and TCP/IP (1 of 2)

Data is transferred around the Internet in packets using the Internet Protocol (IP). The Internet Protocol sets the standard for communication over the Internet.

On top of the Internet Protocol is TCP/IP (Transmission Control Protocol / Internet Protocol) which makes sure that data is not lost in its long journey from one computer to another.

Each computer that is connected to the Internet has an IP address composed of four numbers, each between 1 and 255, e.g. This unique address allows information to be retrieved from and sent to a specific computer just like a postal address specifies a building.