Domain Name System ( Or service or Server), and Internet service that translates domain names into IP addresses. Because domain names are alphabetic, they're easier to remeber. The Internet however. is really based on IP addreses. 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.microsoft.com might translate to 207.46.19.254
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.
