Cisco 200-125 Exam
Which two circumstances can prevent two routers from establishing an OSPF neighbor adjacency? (Choose two.)
- A. mismatched process IDs
- B. mismatched autonomous system numbers
- C. an ACL blocking traffic from multicast address 224.0.0.10
- D. use of the same router ID on both devices
- E. mismatched hello timers and dead timers
