DNS in IT Glossary

(1) Short for Domain Name System (or Service or Server),
an Internet service that translates domain names into
IP addresses. Because domain names are alphabetic,
they're easier to remember. The Internet however,
is really based on IP addresses. Every time you
use a domain name, therefore, a DNS service must
translate the name into the corresponding IP address.
For example, the domain name www.example.com might
translate to 198.105.232.4.
The DNS system is, in fact, its own network.
If one DNS server doesn't know how to translate
a particular domain name, it asks another one,
and so on, until the correct IP address is returned.

(2) Short for digital nervous system, a term coined by
Bill Gates to describe a network of personal computers
that make it easier to obtain and understand information.