Exam 300-420 Topic 2 Question 4 Discussion

Actual exam question for Cisco's 300-420 exam
Question #: 4
Topic #: 2
Refer to the exhibit. An architect is designing a Layer 3 routed network using point-to-point fiber links between the topology layers. BFD is supported on the software that runs within the infrastructure. Is BFD required within the design to provide sub-second convergence in the event of a fiber breakage?

Suggested Answer: D Vote an answer

BFD provides rapid fault detection but requires tuning of its transmit and receive intervals to achieve sub-second convergence. Simply enabling BFD does not automatically guarantee the desired fault-detection speed without configuring appropriate timers.

by ilvg at Sep 12, 2026, 04:34 PM

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