4.1.1 Computer Addresses

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Computers are often given names, because names are easy to remember.

In truth the computers are given numbers.

When we ask for a computer by name, your computer must find the number. It does this using a DNS (Domain Name Server). On campus we have two `148.61.1.10' and `148.61.1.15'.

The number has four parts. The first two digits `148.61' indicate to all of the internet that the computer is at `gvsu.edu', or on campus here (we actually pay a yearly fee of about $50 to register this internationally). The third number indicates what LAN the computer is located on (Basically each hub has its own number). Finally the last digit is specific to a machine.