1 Classful IPv4 Addressing Scheme. An IPv4 address assigned to a host is 32 bits long and should be unique. This addressing, known as IPv4 addressing, is written in the bit format, from left to right, where the leftmost bit is considered the most significant bit.
The IPv4 address is a 32-bit number that uniquely identifies a network interface on a machine
Example: 192.168.255.255