Which two networking issues need to be addressed to ensure stability with the new design?

A large enterprise customer is migrating thousands of retail offices from legacy TDM circuits to an Ethernet-based service. The network is running OSPF and has been stable for many years. It is now possible to backhaul the circuits directly to the data centers, bypassing the regional aggregation routers.

Which two networking issues need to be addressed to ensure stability with the new design? (Choose two.)
A . Nothing will change if the number of offices is the same.
B . Nothing will change if the number of physical interfaces stays the same.
C . The RIB will increase significantly.
D . The FIB will increase significantly.
E . The amount of LSA flooding will increase significantly.
F . The size of the link-state database will increase significantly.

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Answer: E,F