Part 1 of Essay
A numeric code that identifies a particular computer on the Internet . Just as a street address identifies the location of your home or office , every computer or network on the Internet has a unique address, too. You register your address with InterNIC as both a name , which is referred to as the domain name , and a numbe ....

Part 2 of Essay
.... on the network and sometimes also a subnet address. The way the address is split depends on its "class", A, B or C as determined by the high address bits: Class A - high bit 0, 7-bit network number, 24-bit host number. n1.a.a.a 0 ....