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Which Azure backup feature should an architect recommend for a workload requiring cross-region backup-data residency to survive a paired-region disaster?
AGeo-redundant Recovery Services vault (GRS)
BAzure DNS
CLRS-backup vault (single-region)
DNo backups
Answer & Solution
Correct answer: A. Geo-redundant Recovery Services vault (GRS)
GRS vault replicates backups to paired region (per AZ-305 §3 backup). The others either don't survive region failure or aren't backups.
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