When ever we connect our system /device to the internet , internet provides an unique number for our device , this number is known as IP address , IP address is always universal unique.
It is a 32 bit number , which contain four 8 – bit numbers , these numbers are separated by dot (.) punctuation.
IP address is looks like above example.
First two bits describe the host / server by which a device is connected , and second two bits describes the particular device.