What are two causes?

An OSPF neighbor between routers R1 and R2 is stuck in loading state on R2. What are
two causes? (Choose two.)

An OSPF neighbor between routers R1 and R2 is stuck in loading state on R2. What are
two causes? (Choose two.)

A.
OSPF is not enabled on the interfaces.

B.
A firewall filter is blocking OSPF hellos on both sides.

C.
The R1 router has received a corrupted link-state request packet.

D.
The interface MTU is mismatched between the routers.

Explanation:



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