Within an Internet Protocol or IP network, every connected host must have both an IP host address and a subnet mask to operate properly. Any device using the IP protocol can refer to itself with the IP address 127.0.0.1 and subnet mask 255.0.0.0, but to communicate with other devices on the network, each device must have either a private or public IP address and subnet mask. The host ID is calculated by using the remainder of the subnet mask as it applies to the computer’s IP address. Writer Bio
