| Short
for Domain Name System or Domain Name Service, a DNS is an Internet or other type of network
server that helps to point domain names
or the hostname to their associated
IP address that was introduced by Paul Mockapetris
and Jon Postel in 1984. If a
domain name is not found within the local database, the server may query other domain
servers to obtain the address of a domain name. For example, when
a user is accessing the Computer Hope domain a user would enter the
easy to remember domain: computerhope.com. When entered that domain
name is looked up on a Domain Name System to translate that name
into an IP address that can be better
understood by computer, e.g. 204.288.150.3. Using that IP address
the computers can then find the computer containing the Computer
Hope web page and forward that information to your computer.
Without a computer that could resolve a domain name or without
the rights you'd have to know the IP address of each of the web
pages or computers you wanted to access.
- Microsoft Windows 2000 and XP users can manage their DNS
settings by using the ipconfig
command.
- To lookup DNS information in Linux / Unix use the
host command.
Also see: A record, CNAME,
DNS hijacking, Domain,
Domain namespace, Hosts
file, MX record, Network definitions,
Port, rDNS, SOA
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