DP-203 Develop data processing Practice Question
Which TWO of the following are supported sources for Azure Data Factory Copy activity? (Choose two.)
⚠ Common exam trap
Many exam-takers confuse Azure Analysis Services (a semantic model) with Azure SQL Database or Azure Synapse, which are valid sources, leading them to incorrectly select it as a supported source for Copy activity.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon S3
Amazon S3 is correct (C) because Azure Data Factory provides a native Amazon S3 connector that the Copy activity can use as a source, reading objects via the S3 API with linked-service credentials. Azure Blob Storage is correct (D) because it is one of ADF's core supported stores, and the Copy activity can read blobs through the Azure Blob Storage connector. Power BI Dataset (A) is not a Copy activity source; ADF interacts with Power BI only for certain dataset-based scenarios, not as a copy source. Azure DevOps (B) is not a data store connector for Copy activity sources. Azure Analysis Services (E) is an analytical model, not a supported Copy activity source store.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Power BI Dataset
Why it's wrong here
Power BI datasets are not supported as sources for Copy activity.
- ✗
Azure DevOps
Why it's wrong here
Azure DevOps (boards, repos) is not a data store.
- ✓
Amazon S3
Why this is correct
Amazon S3 is supported via the Amazon S3 connector.
- ✓
Azure Blob Storage
Why this is correct
Azure Blob Storage is a first-class source for Copy activity.
- ✗
Azure Analysis Services
Why it's wrong here
Azure Analysis Services is a semantic modelling and tabular query engine, not a data store that Azure Data Factory can read from or write to as a Copy activity source or sink; supported sources include Azure SQL Database, Blob Storage, and SAP HANA via the appropriate connectors. It is tempting because Analysis Services holds business data and appears in the same Azure data platform, but it exposes tabular models over XMLA rather than a copyable dataset endpoint.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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