Understanding Dns

DNS is the backbone of the WorldWideWeb and a tool for the lazy. It is used to replace IPs (the "real" locations of servers such as 127.0.0.1 and 68.346.13.1) with domain names (.com, .net or .org.) Here's the basis of it:

If I got something wrong here, could someone be so kind as to fix it up? I'm not exactly sure it's correct.


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