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Which Azure VM availability construct guarantees that VMs are placed across different physical hardware to survive single-rack failures?
AResource group naming convention
BCosmos DB partition keys
CPublic IP address allocation
DAvailability Set (or Availability Zone) — separates VMs across fault and update domains
Answer & Solution
Correct answer: D. Availability Set (or Availability Zone) — separates VMs across fault and update domains
Availability Sets / Availability Zones place VMs on physically distinct hardware (fault domains) and update them at different times (update domains) to survive rack and rolling-update failures. The other options aren't HA constructs.
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