An Active Directory or domain controller is a role or feature added to the Windows server after its installation.
Set the IP address and machine name
IP Address: IP_AD
Subnet Mask: MASQUE_AD
Default Gateway: IP_PASSERELLE
As for DNS, it will set itself to loopback. When the Windows server is promoted to domain controller, it automatically installs the DNS role and thus becomes its own DNS server
Add the “AD DS” feature
Promote the server to domain controller
