Huawei
H12-841_V1.5 · Question #245
In wide area network link fault detection, which of the following technologies can achieve "rapid detection of link faults and shorten fault recovery time"? (Multiple choice)
The correct answer is A. BFD (Bidirectional Forwarding Detection, millisecond-level detection of link status) B. NQA (Network Quality Analysis, periodically detecting link latency and packet loss). See the full explanation below for the reasoning.
High Reliability Design in Campus Networks
Question
In wide area network link fault detection, which of the following technologies can achieve "rapid detection of link faults and shorten fault recovery time"? (Multiple choice)
Options
- ABFD (Bidirectional Forwarding Detection, millisecond-level detection of link status)
- BNQA (Network Quality Analysis, periodically detecting link latency and packet loss)
- CStatic routes have a default timeout (timeout depends on the routing protocol, resulting in a long
- DManual ping testing results in delayed fault detection.
- ENo fault detection mechanism is configured; faults are discovered based on user complaints .
How the community answered
(51 responses)- A71% (36)
- C4% (2)
- D10% (5)
- E16% (8)
Topics
#BFD#NQA#link fault detection#fault recovery time
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