这道题的图是怎么个意思？

sinkevin

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.

图里面不是标的三个路由在area 0里么，怎么答案又说他们用了不同的area？

keyhappy

图只是表示逻辑的设计，即实际配置上有可能是哪里打错了，这类题考的是我们如何去排错，请不要钻牛角尖

aoklife

注意这题的考试意图
这考得是OSPF建立邻居关系的必要条件
1区域要一致
2hello time和dead time要一致
3如果有认证，密码要一致

xgn0030

aleser

选项在迷惑咱们，根据3楼童鞋的1,2,3，这类题就没问题咯楼主加油

散步的猫

楼主要看题目，图只是示意。