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Domain Name Services: Postman of the Internet

Domain Name Services (DNS) is a service which exist to help us humanize the addresses of networked resources. Humans remember words as a whole easier than numbers representing octal based Internet Protocol addresses of those same networked resources be them across the Wide World Web or just an arms length away on our local network.

That was a mouth full. Essentially through DNS you can type in a URL into your favorite web browser and through the process of name resolution your system contacts a server acting in your behalf to find the correct IP address that matches the human oriented address you type in.

Sounds simple but a lot of chatter between various servers near and far may happen just to pull up that favorite site that you wish to view. First your own system will see if it has the particular IP/URL pairing locally in it’s own tables. On your computer this information will be kept in a host.txt file and depending on the operating system the location varies. Continue reading Domain Name Services: Postman of the Internet

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