Domain Name System

Domain Name System
Domain Name System
The Domain Name System DNS is a hierarchical decentralized naming system for computers, services, or any resource connected to the Internet or a private network It associates various information with domain names assigned to each of the participating entities Most prominently, it translates more readily memorized domain names to the numerical IP addresses needed for the purpose of locating and identifying computer services and devices with the underlying network protocols By providing a worldwide, distributed directory service, the Domain Name System is an essential component of the functionality of the Internet, and has been in use since the 1980s It was created in 1983 by Paul Mockapetris
The Domain Name System delegates the responsibility of assigning domain names and mapping those names to Internet resources by designating authoritative name servers for each domain Network administrators may delegate authority over sub-domains of their allocated name space to other name servers This mechanism provides distributed and fault tolerant service and was designed to avoid a single large Domain Name System
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Domain Name System