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ARCHIVED: What is an IP address? Your IP address is your computer's unique address on the Internet. An IPv4 address consists of four numeric segments separated by periods (e.g., 64.236.16.116), and is different from the MAC address of your Ethernet card. If you have IPv6 enabled, you will also have an IPv6 address.
TCP/IP is the suite of protocols used by the Internet and most LANs throughout the world. In TCP/IP, every host (computer or other communications device) that is connected to the network has a unique IP address. An IP address is composed of four octets (numbers in the range of 0 to 255) separated by decimal points. The IP address is used to uniquely identify a host or computer on the LAN.