Which four statements accurately describe the new topology’s properties?

Oracle 12cR1 Rex Cluster introduces a new topology, which allows for a higher level of scalability.
Which four statements accurately describe the new topology’s properties?

A.
Hub and Leaf topologies allow tightly and loosely coupled server membership.

B.
Hub and Leaf topologies support Implicit Server Pools.

C.
Leaf servers are standard as in previous versions.

D.
Leaf servers are light-weight, no shared storage, no peer-to-peer communication and dedicated
to application service.

E.
Hub servers do not support Oracle ASM.

F.
Oracle Flex Cluster 12cR1 supports bare metal and OVM servers in common cluster.

Explanation:
http://oukc.oracle.com/static12/opn/events12/107492/072513_107492_source/index.ht
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