Q: 20
What is an advantage of implementing BFD?
Options
Discussion
B. Check the official guide or Cisco docs for protocol behaviors like BFD, those helped me with similar exam questions.
A tbh
Its B, A is tricky but BFD is mainly about those fast, sub-second failure detections.
B is the real advantage here. Option A trips people up but millisecond level failure detection is exactly what BFD brings, not just faster updates. Seen similar on other practice sets.
C or D, Cisco loves to throw in confusing options on these. I'd go with C since BFD can run without needing a routing protocol enabled (you can use it for static routes too). Not 100% on this one-exam questions always trip me up on BFD's main edge. Someone else see it differently?
B makes sense here. BFD's main edge is how fast it spots link failures, like in the millisecond range, which is way quicker than typical routing protocol timers. The others don't really nail what sets BFD apart. Pretty sure about B but open to another take if I'm missing something.
Faster failure detection is the main thing BFD brings, so I say B. Routing protocols usually take seconds, BFD can spot failures in milliseconds. Pretty sure that's what they're looking for here.
Option A
Probably B, BFD is all about super fast failure detection for links, way quicker than routing protocol timers.
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