Which reason could cause an OSPF neighborship to be in the EXSTART/EXCHANGE state?

Which reason could cause an OSPF neighborship to be in the EXSTART/EXCHANGE state?
A . mismatched OSPF link costs
B . mismatched OSPF network type
C . mismatched areas
D . mismatched MTU size

View Answer

Answer: D

Explanation:

Reference: https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13684­12.html#neighbors