IP Addressing

IP stands for internet protocol. Basically it is a unique identifier for a computer on the internet. It is numerical address with four numbers separated with dots and the format of an IP address is a 32-bit.Each number can be start from 0 and ends with 255. For example IP address looks like this: 131.200.1.1

Every computer on the internet using unique IP address and this IP address can be static and dynamic. A server has a static IP address that does not change. When a computer dialing internet through modem then that computer has a IP address that is assigned by the local ISP. Your local ISP assigned you unique IP address for each session and it may be different each time.

You can connect to any server using this IP address. if you simply type http://131.200.1.1 and arrive at the machine that contains the Web Server for the specified IP address.

TCP/IP is divided into 3 usable classes and 2 experimental classes. Class A, B, C are usable classes and D, E are experimental classes. We can not use experimental classes in network.

Classes Range

A 1.X.X.X 126.X.X.X

B 128.X.X.X 191.X.X.X

C 192.X.X.X 223.X.X.X

D 224.X.X.X 239.X.X.X

E 240.X.X.X 254.X.X.X

127.X.X.X is used for troubleshooting.