Your network contains an Active Directory forest. The forest contains a single domain named contoso.com. The
domain contains four domain controllers.
The domain controllers are configured as shown in the following table.
All domain controllers are DNS servers.
You plan to deploy a new domain controller named DC5 in the contoso.com domain.
You need to identify which domain controller must be online to ensure that DC5 can be promoted successfully
to a domain controller.
Which domain controller should you identify?
A.
DC1
B.
DC2
C.
DC3
D.
DC4
Explanation:
To perform a domain controller promotion you need the Infrastructure master to be online. The schema master
and the domain naming master are per-forest roles. Therefore, there is only one schema master and one
domain naming master per forest.
The RID master, the PDC master, and the infrastructure master are per-domain roles. Each domain has its
own RID master, PDC master, and infrastructure master. Therefore, if a forest has three domains, thereare
three RID masters, three PDC masters, and three infrastructures masters.
RID master must be online because the new DC is supposed to get 500 security ID’s from the RID master the new DC can then assign to new objects.
Answer D is the right one. //Sascha
D.
RID
“Allocates active and standby RID pools to replica domain controllers in the same domain.
Must be online for newly promoted domain controllers to obtain a local RID pool that is required to advertise or when existing domain controllers have to update their current or standby RID pool allocation.”
http://support.microsoft.com/KB/223346
thANKS
D is correct. Example below:
http://thefrozengeek.blogspot.com/2015/05/can-you-promote-dc-with-rid-master.html