Randall

DNS is a hierarchical naming system for computers that uses a domain name system. The root domain is the top level domain in DNS. The root domain is typically a country name, such as “com”, “net”, or “org”. Other top level domains include “edu”, “gov”, and “mil”. In a typical DNS hierarchy, a second level domain is subordinate to the root domain. For example, the domain “example.

com” is subordinate to the root domain “com”. A third level domain is subordinate to a second level domain.net” is subordinate to the domain “com”. In DNS, a domain name is a sequence of characters that identify a network or host. DNS servers use the domain name to look up the IP address for the network or host.