You have a RODC named Server1 running Server 2012. You need to add a RODC Administrator.
How do you complete the task?
A.
dsmgmt.exe
B.
ntdsutil
C.
Add user to Local Administrator Group on Server1
D.
Use Security Group and modify RODC Delegated Administrator
D. Use Security Group and modify RODC Delegated Administrator
https://technet.microsoft.com/en-us/library/cc755310
D) is the correct answer, but it is worded oddly.
Create AD Group, set AD group in Managed By field of RODC properties (which is the delegation).
This is the MS recommended method.
A) will also work, but are specifically not recommended by MS. (not recommended)
C) will also work, as this is what is done by using dsmgmt. (not recommended)
https://technet.microsoft.com/en-us/library/cc755310(v=ws.10).aspx