Dynamic DNS

On my Windows 2008 Server's NIC properties, there is an tickbox for "Register this connection's address in DNS".

I know that I can also run ipconfig/registerdns from the DOS prompt.

Can someone tell me - are these effectively the same thing? Does the NIC setting effectively mean that the server was going to dynamically register itself in DNS. And the /registerdns setting means doing the same, but with an admin running the command to do so?

And what if Dynamic DNS wasn't supported by the DNS server? What would happen to both of these options then?

This question applies to both AD DNS and UNIX DNS.
chuckp2010Asked:
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adiloadiloConnect With a Mentor Commented:
this option is for your internal dns registration , if you have an internal domain . you nic automatically register your nic with dns . an example machine1.contoso.com

/registerdns only forces your computer to register its dns with the internal dns server . if users for example ping  machine1.contoso.com it will resolve to you ip .  it doesn`t matte if it is a linux or windows dns server it will register its ip with your local dns server .
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elawadConnect With a Mentor Commented:
both options does the same thing, now if you type ipconfig /registerdns is usually comes after ipconfig /flushdns to foce the DNS server to delete your old record or ip address and registers you with the new aquired ip address.
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