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Domain Name System (DNS)

Domain Name System (DNS) is IP address translated to text that is readable by humans. It is a protocol within the set of standards for how computers exchange data on the Internet and on many private networks, known as the TCP/IP protocol suite.

For example: www.rackspace.com = 72.32.191.88

DNS contains two main parts: Host Name (www) and Domain Name.

The domain name is broken to two levels: Top level Domain (.com) and second level Domain (rackspase).

There are various top level Domains such as:

• .com – Commercial organizations
• .edu – Educational Institutions
• .org – Not-for-profit organizations
• .net – Networks
• .gov – Government organizations
• .mi – Military organizations
• .num – Phone numbers
• .arpa – Reserse DNS
• .xx – Two-letter country code.

Evolution of Solution Quiz: