Two OSPF neighbor routers are stuck in the EXSTART state. After a while, the neighborship goes
down. A network engineer is debugging the issue when both routers show the OSPF log message
“too many retransmissions.” What is the possible root cause?
A.
OSPF area mismatch
B.
OSPF hello-interval mismatch
C.
interface MTU mismatch
D.
interface network type mismatch