Domain Name System (DNS)

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Domain Name System (DNS) is a hierarchical naming system built on a distributed database for computers, services, or any resource connected to the Internet or a private network. Most importantly, it translates human readable domain names into the numerical identifiers associated with networking equipment, enabling devices to be located and connected worldwide. Analogous to a network “phone book,” DNS is how a browser can translate a domain name (e.g., “facebook.com”) to the actual IP address of the server, which stores the information requested by the browser.
 
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