Why A and E are wrong
A. Incorrect. Health checks (config health-check) measure metrics (latency, jitter, etc.) on members continuously, regardless of rule usage — rules only reference those measurements (pages 38–45, health check independence).
E. Incorrect. A rule binds to one health check; you cannot mix targets from different health checks in a single rule's config sla (pages 225–227; multiple targets must share the same health check).
PG 140
E: You can configure performance SLA with different performance requirements.
B: SLA targets are required for rules that use lowest cost as a strategy
C: patently true.
I think B is correct: B. SLA targets are used only by SD-WAN rules that are configured with a Lowest Cost (SLA) strategy.
Because "Best quality" strategy does not use SLA targets, it just compare the value of metric (latency or jitter or...) mesured between the members and select the best one. So, there is no use of "targets". So, Only Lowest Cost (SLA) strategy uses SLA targets .
someone agree or not, to enlighten me, perhaps i'm wrong !
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