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Canonical vs. Host

Posted on 2004-05-02
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Last Modified: 2010-04-11
I'm studying for a exam. I'm still a little confused what EXACTLY a canonical vs. host name is.
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Question by:Scott YeahRight
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4 Comments
 
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Expert Comment

by:matalyn1016
ID: 10974567
Basically a CNAME points to a spot and an A record points to an IP.
For example:

This CNAME
CN=MyDocuments,OU=MyOU,DC=XXXX,DC=Org
is presented as
XXXX.org/MyOU/MyDocuments

whereas this A record points to an IP:
www.XXXX.org.           IN   A      216.173.XXX.XXX

What this means is – when a request for information is made to www.XXXX.org , DNS resolves it to 216.173.XXX.XXX and to further refine the request when you request www.XXXX.org/MyOU/MyDocuments the CNAME record point to that server/information.

Hope this helps……

What test are you studying?
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Author Comment

by:Scott YeahRight
ID: 10974722
MCSE 2000 #216.

Sooooo.

It sounds like a cname is almost like a share, folder, or file name. Only on spot resolved via DNS?  Correct?
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Accepted Solution

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matalyn1016 earned 500 total points
ID: 10974777
Somewhat, it helps to further define the request and is usually used internally. If you create an exchange server and add a mailbox to a user in AD it will also add a CNAME record for routing.
Hope this helps.

216 – the beast – the only one I have seen harder is 220.
Best of luck.
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Author Comment

by:Scott YeahRight
ID: 10974808
Thanks. I appreciate your empathy. I respect your knowledge and experience.

I took it last thursday and flunked it. got a 569. Said takes 700 to pass. I'm self study. Haven't been an admin before. Only read through a book once. I didn't expect to do THAT well. I was going to postpone it. But forgot until to late.So..............had to take it and hope for the best. Actually did better than I expecte. Planning to take again this week.

You've solidified it for me. Think I've got it.
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