Source Material
Much of the information in this section and the next is taken from Microsoft’s TechNet website:
Please see that site for additional information.

FRS Requirements and Dependencies

SYSVOL replication is handled by FRS. FRS replicates SYSVOL using the topology generated by the Knowledge Consistency Checker (KCC) and also has its own Active Directory objects that are replicated using Active Directory replication. The KCC is responsible for building the Active Directory replication topology. It uses a highly sophisticated algorithm to calculate the most efficient way to build the connection objects between the domain controllers.

What about AD?
It is important to ...

Get Mastering Windows Server 2012 R2 now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.