Two VMs run the same tier of an app and must not share hardware failure points within a single datacenter. Availability zones aren't supported in this region. What should be used?
A.An availability set with fault domains and update domains
Fault/update domains = availability sets. Correct.
B.Proximity placement groups
Proximity groups put VMs physically CLOSE together — opposite intent.
C.Azure Site Recovery
Site Recovery is DR replication, not in-datacenter placement.
D.A Virtual Machine Scale Set with flexible orchestration
Flexible scale sets CAN work but the classic answer for two VMs + fault isolation is an availability set.
Why this answer
Availability sets distribute VMs across fault domains (separate racks/power/network) and update domains (sequential host patching) — the in-datacenter anti-affinity tool when AZs aren't available. PPGs do the opposite (colocate for low latency).
Correct answer: A · Last reviewed 2026-02-14
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