正解:A,C,D
Basic Concept: This question tests choosing the correct Azure migration approach by matching the source platform, target service, downtime tolerance, and administrative effort.
Why A and C and D is Correct: General Purpose Standard is an Azure data-platform feature, but it must match the workload model, service tier, migration path, or deployment constraint described in the scenario. In this scenario, the important constraint is: Which three service tiers support the SQL managed instance?
General Purpose Standard satisfies that constraint without adding an unrelated service or manual process.
Business Critical provides low-latency local SSD storage and high availability for demanding workloads, but it is usually more expensive than necessary for bursty idle workloads. This fits the case because the requested outcome is: Which three service tiers support the SQL managed instance? The selected feature addresses that outcome directly rather than relying on a workaround. General Purpose Premium is correct because it is the feature whose normal purpose matches the stated requirement. General Purpose Premium is an Azure data- platform feature, but it must match the workload model, service tier, migration path, or deployment constraint described in the scenario. The scenario wording points to that specific behavior: Which three service tiers support the SQL managed instance?
Why B is Wrong: Business Critical provides low-latency local SSD storage and high availability for demanding workloads, but it is usually more expensive than necessary for bursty idle workloads. It would solve a neighboring problem, but not the deployment, sizing, or migration requirement in this item.
Why E is Wrong: Business Critical provides low-latency local SSD storage and high availability for demanding workloads, but it is usually more expensive than necessary for bursty idle workloads. It would solve a neighboring problem, but not the deployment, sizing, or migration requirement in this item.