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Which Route 53 routing policy is used to fail traffic over from a primary endpoint to a standby endpoint when the primary's health check fails?
AWeighted routing
BLatency-based routing
CMultivalue answer routing
DFailover routing
Answer & Solution
Correct answer: D. Failover routing
Failover routing publishes the primary while it's healthy; on failure it answers with the secondary. Weighted splits by ratios; latency picks the lowest-latency Region; multivalue is a basic DNS round-robin with health checks.
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