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Exam 350-401 topic 1 question 633 discussion

Actual exam question from Cisco's 350-401
Question #: 633
Topic #: 1
[All 350-401 Questions]

Which of the following statements regarding the use of Bidirectional Forwarding Detection (BFD) in a Cisco SD-WAN environment are true?

  • A. BFD cannot be disabled on SD-WAN routers.
  • B. OSPFv3 is not supported with BFD.
  • C. In addition to link failure detection, it is also used to measure loss and latency used by application aware routing.
  • D. Is not typically enabled for OMP.
  • E. Does not support BGP.
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Suggested Answer: AC 🗳️
by iGlitch at Nov. 24, 2022, 9:19 p.m.

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Tacolicious
Highly Voted 2 years, 5 months ago
Selected Answer: AC
Answer provided is correct: Runs on SD-WAN tunnel to detect failures in the overlay tunnel Is enabled by default and cannot be disabled Is typically enabled for OMP Besides link failures, it also measures latency, loss, and other link statistics used by application-aware routing https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/routing/ios-xe-17/routing-book-xe/m-bfd-for-routing-protocols.html#Cisco_Concept.dita_26cf6354-cce5-4799-b140-f518adc78a40
upvoted 10 times
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chmacnp
Most Recent 3 months ago
Selected Answer: AC
surprising that Cisco enforces the use of BFD on it's SDWAN solution. but A & C are the answers
upvoted 1 times
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Gonzo9000
8 months, 2 weeks ago
Selected Answer: C
The question doesn't say to select more than one answer? I chose C.
upvoted 1 times
hodi
7 months, 4 weeks ago
totally agree
upvoted 1 times
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[Removed]
10 months, 3 weeks ago
Selected Answer: AC
A & C are correct
upvoted 1 times
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slacker_at_work
1 year, 2 months ago
Selected Answer: AC
The BFD (Bidirectional Forwarding Detection) is a protocol that detects link failures as part of the Cisco SD-WAN (Viptela) high availability solution, is enabled by default on all vEdge routers, and you cannot disable it. BFD and related parameters: Path liveliness and quality measurement detection protocol: Up/Down, loss/latency/jitter, IPSec tunnel MTU, Runs between all routers in the topology Uses hello (up/down) interval, poll interval and multiplier for detection
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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