Basic Concept: This question tests choosing the correct Azure migration approach by matching the source platform, target service, downtime tolerance, and administrative effort.
Why B is Correct: an Azure Blob Storage container matches the expected DP-300 administration action. an Azure Blob Storage container 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 question is not asking for a general Azure capability; it is asking for the feature that produces this result: You need to identify the event_flle target for monitonng DB3 after the migration to Azure SQL Database.
Why A is Wrong: an Azure SQL database is an Azure data-platform feature, but it must match the workload model, service tier, migration path, or deployment constraint described in the scenario. It mismatches the target platform, migration method, compute tier, or deployment model described in the scenario, so it would not satisfy the workload as stated.
Why C is Wrong: a SQL Server filegroup is an Azure data-platform feature, but it must match the workload model, service tier, migration path, or deployment constraint described in the scenario. It would solve a neighboring problem, but not the deployment, sizing, or migration requirement in this item.
Why D is Wrong: an Azure Files share is an Azure data-platform feature, but it must match the workload model, service tier, migration path, or deployment constraint described in the scenario. It mismatches the target platform, migration method, compute tier, or deployment model described in the scenario, so it would not satisfy the workload as stated.