R3 and R4 cannot form an OSPF neighborship. What is the problem?
A. The area IDs of R3 and R4 are mismatched
B. The Layer 2 encapsulation of the serial links is mismatched
C. The OSPF hello and dead interval are mismatched
D. The router ID of R3 is configured on R4
Answer:A
R3 and R4 cannot form an OSPF neighborship. What is the problem?
A. The area IDs of R3 and R4 are mismatched B. The Layer 2 encapsulation of the serial links is mismatched C. The OSPF hello and dead interval are mismatched D. The router ID of R3 is configured on R4