You have a DNS server named DNS1 that runs windows server 2012 R2.
DNS1 is used to resolve the names of internet resources by using several DNS forwarders.
You need to prevent DNS1 from performing iterative queries if the DNS forwarders are unable to reslove the
queries.
Which cmdlet should you use?

A.
Remove-DNSServerRootHint

B.
Set-DNSServerPrimaryZone

C.
Ser-DNSServerGlobalNameZone

D.
Unregister-DNSserverDrirectoryPartition