Hello
I've an Active Directory forest with a parent domain (example.intranet) and a child domain (labs.example.intranet). In DNS zone of example.intranet there is a zone delegation for labs.example.intranet, this zone delegation has three NS resources (the child domain has 3 domain controllers), as far as I know when a client of the parent NS asks them for a resocurce in labs.example.intranet, the parent NS will return the client the list of NS available for child zone. In Active Directory Sites and Services each child domain domain controller it's associated to a specified network. But I've the following doubt: when a DNS client asks to the parent domain NS for a resoruce in the child domain: in what order are returned the three NS of child domain defined in the zone delegation and what NS will be used the first? Are Active Directory Sites and Subnets relevant for this NS order? Is there any way to force what NS is returned first? Is it random or depends of the subnet location of the client? And, if the firts NS returned can't answer to the client, Will the client use the next NS until it gets an answer?
Thanks in advance