1. DCDIAG
To deploy an additional domain controller:
dcdiag /test:dcpromo /DnsDomain:domain_name.com /ReplicaDCTo deploy a child domain:dcdiag /test:dcpromo /DnsDomain:child_domain_name.forest.com /ChildDomain
Test the FSMOdcdiag /s:
Check DNSdcdiag /test:dnsCheck for missing and duplicate
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