试题详情
- 单项选择题 Router R1 sits inside OSPF area 1. Router R2 redistributes an E1 route into OSPF for prefix 2.2.2.0/24, with external metric 20. Router R22 redistributes an E2 route for the same prefix/length, external metric 10. Under what conditions will R1 choose as it s best route the route through R22?（）
A、R1 will always choose the route through R22.
B、As long as R1's best internal OSPF cost to reach R22 is less than 10.
C、As long as R1's best internal OSPF cost to reach R22 is less than 20.
D、R1 will never choo se the route through R22 if the E1 route through R2 is available.
- D
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