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Questions about PING and NSLOOKUP cmd: How the host name is resolved?

Posted on 2011-02-11
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Last Modified: 2012-05-11
Hi,

1- What's the order that ping cmd will resolve a host name? Check on DNS first and WINS after?

2- If the ping result doesn't give the FQDN does it means it has been resolved by WINS?

3- Does NSLOOKUP cmd is just relate to DNS server? (I mean will not communicate to WINS)
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Question by:SAM2009
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NetExpert-Warszawa earned 300 total points
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1 - hosts, DNS, optionally WINS/lmhosts
2 - or hosts
3 - DNS only
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by:Krzysztof Pytko
Krzysztof Pytko earned 200 total points
ID: 34875403
1) local DNS cache, hosts file, DNS server(s), NetBIOS, WINS server, lmhosts file
2) yes, if your echo request doesn't have FQDN it's NetBIOS name
3) nslookup gets information only fom DNS server

Regards,
Krzysztof
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by:NetExpert-Warszawa
NetExpert-Warszawa earned 300 total points
ID: 34877216
Krzysztof,

Ad. 1.
You are right. I've forgotten about cache. BTW NETBIOS names use a cache too.
The order broadcast (NETBIOS) / WINS depends on settings. It is usually set to WINS first, broadcast next.

Ad. 2.
You do not need to specify a domain name in a hosts file. A name without a domain could come from the hosts file.
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by:SAM2009
ID: 34879682
Thank you very much!
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