Know about IP Addressing ..                                  [Next]

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As implied by its name, the IP (Internet Protocol) address is the mean to address someone over the internet.
When you browse the web, you type an address that contains letters, numbers and some signs.
The address is then translated to an IP address by a protocol named DNS (Domain Name Service) which is out of the scope of this tutorial.
 
Every computer connected to the internet has a different IP address
 
An IP addresses is actually a 32-bit numeric value.
Usually, for convenience, it is presented in DECIMAL DOT NOTATION:
4 octets (bytes) separated by dots.
 
As each number is represented by an octet (8 bits), its values ranging  0 - 255
 
Each physical network has its own unique network address, in which every host (computer router bridge) has its own unique ID, hence, each host has its own unique address.
 
Routers or gateways can have one or more addresses
(according to the number of possible links they can maintain)
 
An IP address is therefore a combination of network and host identifications.