Refer to the graphic.
R1 is unable to establish an OSPF neighbor relationship with R3.
What are possible reasons for this problem? (Choose two)
A . All of the routers need to be configured for backbone Area 1
B . R1 and R2 are the DR and BDR, so OSPF will not establish neighbor adjacency with R3
C . A static route has been configured from R1 to R3 and prevents the neighbor adjacency from being established.
D . The hello and dead interval timers are not set to the same values on R1 and R3
E . EIGRP is also configured on these routers with a lower administrative distance
F . R1 and R3 are configured in different areas
Answer: DF
Explanation:
This questionis to examine the conditions for OSPF to create neighborhood.
So as to make the two routers become neighbors, each router must be matched with the following items:
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