Your network contains an Active Directory domain named adatum.com.
The domain contains a domain controller named DC1 that runs Windows Server 2012.
On DC1, you open DNS Manager as shown in the exhibit. (Click the Exhibitbutton.)
You need to change the zone type of the contoso.comzone from an Active Directory-integrated zone to a
standard primary zone.
What should you do before you change the zone type?
Exhibit:
A.
Unsign the zone.
B.
Modify the Zone Signing Key (ZSK).
C.
Modify the Key Signing Key (KSK).
D.
Change the Key Master.