Practice · Microsoft Certified: Azure Cosmos DB Developer Specialty

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A vendor wants strong tenant data isolation but is concerned about database cost across a large number of tenants. They are evaluating the standalone single-tenant app with single-tenant database model. Which trade-off should they expect?

A It provides the greatest database isolation but is the most expensive solution because elastic pools cannot be used across different resource groups or subscriptions.
B It provides weak isolation but is the cheapest solution because all tenants share one database.
C It provides moderate isolation and allows elastic pools to be shared across subscriptions to reduce cost.
D It provides no data isolation and requires a shared schema for all tenants.

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