I have 4 nameserver set for my domain: ns1.nameserver.com, ns2.nameserver.com, ect...
I know that if one is down an other one will be used. But if the first is up and running and is asked for a domain it doesn't know, will the request be passed to a second nameserver?
I registered a domain.com. Then I specified 2 nameservers (the authoritative I think its their name) that my hosting gave me. I've also an other hosting, I'd like to use it for some subdomains, if I add its nameservers as authoritative what happens?