| The unique
name that identifies an Internet site. Domain Names always
have 2 or more parts, separated by dots. The part on the
left is the most specific, and the part on the right is
the most general. A given machine may have more than one
Domain Name but a given Domain Name points to only one machine.
For example, the domain names:
can all refer to the same
machine, but each domain name can refer to no more than
all of the machines on a given Network will have the same
thing as the right-hand portion of their Domain Names (copperjacket.com
in the examples above). It is also possible for a Domain
Name to exist but not be connected to an actual machine.
This is often done so that a group or business can have
an Internet e-mail address without having to establish a
real Internet site. In these cases, some real Internet machine
must handle the mail on behalf of the listed Domain Name.