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The Internet, and many larger private Internet Protocol
(IP) networks, rely on the Domain Name System (DNS) to help
direct traffic.
The DNS maintains a distributed database of network names
and addresses, and it provides methods for computers to
remotely query the database. Some people call DNS the
"phone book of the Internet.“
A network server that translates “names” into IP Address.
A domain name is the unique web address that you
type in web browser’s, address bar in Firefox, Google
Chrome or Opera and any browser’s to visit a web site.
An examples of domain name is :
www.yahoo.in
www.facebook.com
www.maharashtra.go.in
Since 1998, Domain Extensions or Top Level Domains (TLDs) help to structure
the internet. There’s a lot of TLD choices - close to 300 and growing.
Top Level Domains
DNS
Domain
Name
Type of Organization
Com Commercial (for example, microsoft.com for Microsoft Corporation)
Edu Educational (for example, mit.edu for Massachusetts Institute of Technology)
Gov Government (for example, whitehouse.gov for the White House in
Washington D.C.)
Int International organizations (for example, nato.int for NATO)
Mil Military operations (for example, army.mil for the Army)
Net Networking organizations (for example, nsf.net for NSFNET)
Org Noncommercial organizations (for example, fidonet.org for FidoNet)