DNS
Also called: domain name system
The Domain Name System (DNS) is the technical system behind the operation of domain names on the Internet. Every computer and server connected to the Internet has its own IP address. Domain names were introduced to provide an easy way to access locations on the Internet. The Domain Name System links the easy-to-remember domain names to numeric addresses.
The system uses Domain Name Servers (DNS servers). These servers store the IP addresses associated with the domain names of a piece of the Internet. The moment a domain name is requested from a DNS server, it checks to see if the domain is known to that server. If not, DNS servers can also communicate with each other to find out the correct location on the Internet at a domain name. If the requested domain name exists, the DNS server converts it into a corresponding IP address.
