Referring to the exhibit, why is this OSPF adjacency remaining in this state?
Referring to the exhibit, why is this OSPF adjacency remaining in this state?
The OSPF adjacency is likely remaining in the ExStart state due to an MTU mismatch between the OSPF neighbors. In OSPF, both sides need to agree on the MTU size to form a full adjacency. If there's a discrepancy in the MTU values, the routers may get stuck in the ExStart state, as they are unable to agree on the parameters necessary to move forward in the adjacency formation process.
OSPF stuck in ExStart is mainly related to mismatched MTU. It could also be caused by a firewall filter on the loopback interface, but this is not an alternative.
B is correct