Stupid question

[andre kleibeuker]

DNS servers chache there information and next time the will take "the best 
fit"
let's say youre first request is
b.c.d.e.f.h.com than the top level is consulted...etc...

If you second request is
a.g.d.e.f.h.com than the d.e.f.h.com name server is requisted because he
learned this by the previous call.

Some of the nameservers give the ultimate answer (typically the one your 
browser uses), and some give another nameserver that brings you closer to 
the answer (rootservers)
Al the root servers are configured to give you a closer answer in stead of 
the ultimate answer.

It is not so simple as I said in the previous section but for a good story 
see:

http://library.cs.tuiasi.ro/networking/networking/dnsbind/index.htm

There are no stupid questions! :)


Have fun,
Andre







>From: "no mail" <nomail at nomail.com>
>To: comp-protocols-dns-bind at moderators.isc.org
>Subject: Stupid question
>Date: Fri, 17 Aug 2001 00:41:55 GMT
>
>How does DNS decide which root server from the cache.dns file to send its
>query to?  Obviously if all requests tried to go to A.root-servers.net
>first, it would have an unfair load.
>
>How's this work?
>
>


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