Huawei
H35-211_V2.5 · Question #490
In Type B protection mode, the Standby side port only receives light but does not emit light. When no upstream light is detected for four consecutive DBA allocation cycles, an upstream light-free…
The correct answer is A. True. See the full explanation below for the reasoning.
FTTx Solutions and Deployment
Question
In Type B protection mode, the Standby side port only receives light but does not emit light. When no upstream light is detected for four consecutive DBA allocation cycles, an upstream light-free interruption occurs, which triggers automatic switching.
Options
- ATrue
- BFalse
How the community answered
(36 responses)- A75% (27)
- B25% (9)
Topics
#Type B PON protection#standby port behavior#DBA allocation#automatic switching
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