IP Addressing Overview
IP (Internet protocol) OSI Model: Layer 3
The purpose of IP addresses is to enable communication between networks.
An Internet Protocol version 4 (IPv4) address is a 32-bit number represented as four octets. This is usually shown in dotted decimal notation.
This notation uses four decimal numbers ranging from 0 - 255.
An IP address is used to identify networks and hosts. The network id and the host id bits depend on the class of address.
Next: Classes of IP Address