Yeah actually i need exact answer about IP address. IP address having one specific format in four divisions eg. 109.23.00.3 (for example only) so please let me know what are those four divisions shows? means those values specified by A,B,C and D....what exactly those values denotes?....
The IP address is divided between a Network Id and Host ID. The Network ID gives a unique number to the network. The Host ID gives a unique number to a computer in the network. It's easy to see the difference between both IDs. Look at the first number. I'll show the Network ID in bold. 1-127 xxx.xxx.xxx.xxx (class A) 128-191 xxx.xxx.xxx.xxx (class B) 192-223 xxx.xxx.xxx.xxx (class C) Example: Let's take the IP address 109.23.00.3. 109 sits between 1-127, so 109 is the network ID. 23.00.3 is the Host ID. If you got a computer with that address, and want to add another computer, you need to start with 109, so it belongs to that network. The other 3 numbers can be anything of your choice. Another example would be the address 130.27.80.50. 130 sits between 128-191, so the Network ID is 130.27. And the host ID would then be 80.50. The higher the class (A, B or C), the more different networks you can create, but at the cost of less computers for each network. More information can be found here.
