|DNS||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 126.96.36.199.
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.
|Domain Name||A name that identifies one or more IP addresses. For example, the domain name wanwise.co.uk represents about half a dozen IP addresses. Domain names are used in URLs to identify particular Web pages. For example, in the URL http://www.wanwise.co.uk/index.html, the domain name is wanwise.co.uk.|
Every domain name has a suffix that indicates which top level domain (TLD) it belongs to. There are only a limited number of such domains. For example:
gov.uk - Government agencies
ac.uk - Educational institutions
org.uk - Organizations (nonprofit)
com - commercial business
net - Network organizations