Hands on: heavenly hosts
29 Apr 2009
A Domain Name System (DNS) server translates domain names, that you and I can understand, such as www.google.com, into IP (Internet Protocol) addresses that identify computers on a network.
There are two versions of these addresses. IPv4 consists of a 32-bit binary number (ie a string of 32 ones or zeroes), but these are usually written as four groups of 0-255 decimal numbers separated by dots – eg 208.69.34.231.
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