Which two circumstances can prevent two routers from establishing an OSPF neighbor adjacency? (Choose two.)

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Which two circumstances can prevent two routers from establishing an OSPF neighbor adjacency? (Choose two.)

  • mismatched autonomous system numbers
  • an ACL blocking traffic from multicast address 224.0.0.10
  • mismatched process IDs
  • mismatched hello timers and dead timers
  • use of the same router ID on both devices

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