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Exam 300-410 topic 1 question 398 discussion

Actual exam question from Cisco's 300-410
Question #: 398
Topic #: 1
[All 300-410 Questions]

What is considered the primary advantage of running BFD?

  • A. reduction in time needed to detect Layer 3 routing neighbor failures
  • B. reduction in CPU needed to detect Layer 3 routing neighbor failures
  • C. reduction in time needed to detect Layer 2 switched neighbor failures
  • D. reduction in CPU needed to detect Layer 2 switch neighbor failures
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Suggested Answer: A 🗳️
by HungarianDish_111 at May 18, 2023, 1:54 a.m.

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HungarianDish_111
Highly Voted 2 years ago
Selected Answer: A
https://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/fs_bfd.html BFD can be used at any protocol layer. However, the Cisco implementation of BFD for Cisco IOS Releases 12.2(18)SXE, 12.0(31)S, and 12.4(4)T supports only Layer 3 clients, in particular, the BGP, EIGRP, IS-IS, and OSPF routing protocols.
upvoted 5 times
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bk989
Most Recent 9 months, 2 weeks ago
BFD has both advantage of CPU and time, especially iff offloaded to line card it has reduction in CPU. However the primary point of BFD is reduction of time in updating layer 3 routing protocols, when there is a BFD echo (original implementation, version 0) or asynchronous (version 1) failure
upvoted 2 times
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[Removed]
10 months, 1 week ago
Selected Answer: A
A is correct
upvoted 1 times
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[Removed]
10 months, 2 weeks ago
Selected Answer: A
A is correct
upvoted 1 times
...
Community vote distribution
A (35%)
C (25%)
B (20%)
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