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H31-161 · Question #171
H31-161 Question #171: Real Exam Question with Answer & Explanation
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Question
Refer to the exhibit. As shown in the figure, RTA, RTB, RTC, and RTD are connected through a switch. From small to large in order of the MAC address, the four routers are arranged as follows: RTB, RTA, RTD, and RTC. The Level-2 DIS priority is set to 100 on RTB and RTD, and IS-IS BFD is enabled on all these routers. When the links of RTB are down, how should IS-IS BFD sessions be set up?
Exhibit
Options
- ALevel 1 and level 2 IS-IS BFD sessions are set up among RTA, RTC, and RTD.
- BLevel 2 IS-IS BFD sessions are set up among RTA, RTC, and RTD, and a level 1 IS-IS BFD
- CLevel 2 IS-IS BFD sessions are set up between RTD and RTA as well as between RTD and RTC,
- DLevel 1 and level 2 IS-IS BFD sessions are set up only between RTC and RTD
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