A domain controller in your domain has experienced a catastrophic failure. Because the server failed before it
could be cleanly removed from your domain, Active Directory still thinks the failed domain controller is
present. All of the other domain controllers will continue to try to replicate with it, potentially resulting in
database inconsistency. You need to remove the failed server by cleaning the metadata. Which ntdsutil command should you use to do this?
1. remove selected server
2. move db to3. add nc replica
4. transfer PDC