How DNS (the Domain Name System) Works

The Domain Name System (DNS) is analogous  to a very advanced phone book. It allows computers to convert the easy-to-remember domain names (e.g. google.com) into the less than memorable IP addresses (e.g. 173.194.41.64) that computers use to communicate with each other.

When I was at university, one of my classes reviewed many networking principles. One of these was DNS. I distinctly remember being shown a video explaining the basics of a DNS request. Although I can not find the exact video our was shown, the following makes an excellent substitute.

This video explains the basics of a DNS request – the kind of request your computer (or your Internet service provider) sends out to lookup a domain name and retrieve the related IP address(es).

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