A network engineer outputs the following information when troubleshooting OSPF. Based on this, determine which reason causes the adjacency relationship to fail to be established normally?

A network engineer outputs the following information when troubleshooting OSPF. Based on this, determine which reason causes the adjacency relationship to fail to be established normally?

A . Authentication password is not-consistent
B . Regional type is not-consistent
C . The interval for sending Hello messages is not-consistent
D . The IP address mask of the interface is not-consistent

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Answer: D