What is primary consideration when choosing a routed network design over a traditional campus network design?

A.
Layer 3 service support at the network edge

B.
the routing protocol choice: open (OSPF) or proprietary (EIGRP)

C.
the routing abilities of the host devices

D.
the need to control the broadcast domains within the campus core

Explanation:
Layer 3 ability at network edge should be available to leverage the benefits of routed network design.
Link: http://www.cisco.com/en/US/docs/solutions/Enterprise/Campus/campover.html