Your network contains an Active Directory forest named contoso.com. The forest contains two domains named contoso.com and childl.contoso.com. All domain
controllers run Windows Server 2012. The domain contains four domain controllers. The domain controllers are configured as shown in the following table.
You open Active Directory Users and Computers on a client computer and connect to DC1. You display the members of a group named Group1 as shown in the
Group1 Members exhibit.
When you view the properties of a user named User102, you receive the error message shown in the Error exhibit.
The error message does not display for any other members of Group1. You need to identify which domain controller causes the issue shown in the error message.
Which domain controller should you identify?
A.
DC1
B.
DC2
C.
DC10
D.
DC11
Correct answer is
B. DC2
https://technet.microsoft.com/en-us/library/cc779716.aspx
Infrastructure Master
The infrastructure operations master is responsible for updating object references in its domain that point to the object in another domain. The infrastructure master updates object references locally and uses replication to bring all other replicas of the domain up to date. The object reference contains the object’s globally unique identifier (GUID), distinguished name and possibly a SID. The distinguished name and SID on the object reference are periodically updated to reflect changes made to the actual object. These changes include moves within and between domains as well as the deletion of the object. If the infrastructure master is unavailable, updates to object references are delayed until it comes back online.
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But why not D.DC11, it’s a Infrastructure Master of child1.contoso.com, the domain the user is from.
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Hi ZZ,
It’s because you’re working on DC1 which is in contoso.com.
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The infrastructure master for a domain periodically examines the references, within its replica of the directory data, to objects not held on that domain controller. It queries a Global Catalog server for current information about the distinguished name and SID of each referenced object. If this information has changed, the infrastructure master makes the change in its local replica and also replicates the new values to other domain controllers within the domain.
The error hints the object reference is not updated in Infrastructure Master of Contoso.com domain.
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