You need to ensure that only between 20:00 and 08:00, the domain controllers in the Montreal office…

Your company has offices in Montreal, New York, and Amsterdam.
The network contains an Active Directory forest named contoso.com. An Active Directory site exists
for each office. All of the sites connect to each other by using the DEFAULTIPSITELINK site link.
You need to ensure that only between 20:00 and 08:00, the domain controllers in the Montreal
office replicate the Active Directory changes to the domain controllers in the Amsterdam office.
The solution must ensure that the domain controllers in the Montreal and the New York offices can
replicate the Active Directory changes any time of day.
What should you do?

A.
Create a new site link that contains Montreal and Amsterdam. Remove Amsterdam from
DEFAULTIPSITE1INK. Modify the schedule of DEFAULTIPSITELINK.

B.
Create a new site link that contains Montreal and Amsterdam. Create a new site link bridge.
Modify the schedule of DEFAULTIPSITELINK.

C.
Create a new site link that contains Montreal and Amsterdam. Remove Amsterdam from
DEFAULTIPSITELINK. Modify the schedule of the new site link.

D.
Create a new site link that contains Montreal and Amsterdam. Create a new site link bridge.
Modify the schedule of the new site link.

Explanation:
We create a new site link between Montreal and Amsterdam and schedule it only between 20:00
and 08:00. To ensure that traffic between Montreal and Amsterdam only occurs at this time we also
remove Amsterdam from the DEFAULTIPSITELINK.

How Active Directory Replication Topology Works
http://technet.microsoft.com/en-us/library/cc755994(v=ws.10).aspx