You are developing a verification plan for an upcoming OSPF implementation. Part of this
plan is to verify the status of type 3 LSAs within the network. Which routers should you
verify first to ensure that the configurations are correct for generating type 3 LSAs? Select
the best response.

A.
Internal routers within the backbone area (area 0)

B.
Internal routers within the NSSAs

C.
Internal routers within the stubby areas

D.
ASBRs

E.
ABRs

F.
DRs and BDRs

Explanation:
Type 3 LSA (Summary LSA) is advertised by the ABR of originating area to advertise
network from other areas so we should check the ABRs first.