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Home > Archive > alt.certification.cisco > May 2004 > DNS Layer 4?
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| Ticking Timebomb 2004-05-01, 11:29 pm |
| Thanks everyone for all your help so far.
I am taking a practice test and one answer has DNS as transport? I thought
DNS would be session? The more I read, the less this all makes sense
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| On Fri, 30 Apr 2004, Ticking Timebomb wrote:
> Thanks everyone for all your help so far.
> I am taking a practice test and one answer has DNS as transport? I thought
> DNS would be session? The more I read, the less this all makes sense
>
DNS would be Application Layer. It uses TCP and UDP port 53. It provides
names to IP addresses resolution.
Doan
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| Hansang Bae 2004-05-01, 11:30 pm |
| In article <8Eqkc.58079$DC1.49658@newssvr25.news.prodigy.com>,
ticking.timebomb@sbcglobal.net says...
> Thanks everyone for all your help so far.
> I am taking a practice test and one answer has DNS as transport? I thought
> DNS would be session? The more I read, the less this all makes sense
DNS follows the arpa model (four layers only). It doesn't follow the
OSI model.
--
hsb
"Somehow I imagined this experience would be more rewarding" Calvin
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| "Ticking Timebomb" <ticking.timebomb@sbcglobal.net> wrote in message
news:8Eqkc.58079$DC1.49658@newssvr25.news.prodigy.com...
> Thanks everyone for all your help so far.
> I am taking a practice test and one answer has DNS as transport? I thought
> DNS would be session? The more I read, the less this all makes sense
>
>
DNS uses UDP for requests and responses and TCP for zone transfers. You
should pay attention to details in questions because they may be asking both
variants.
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