- A
Power BI Dataset
Why wrong: Power BI datasets are not supported as sources for Copy activity.
- B
Azure DevOps
Why wrong: Azure DevOps (boards, repos) is not a data store.
- C
Amazon S3
Amazon S3 is supported via the Amazon S3 connector.
- D
Azure Blob Storage
Azure Blob Storage is a first-class source for Copy activity.
- E
Azure Analysis Services
Why wrong: Azure Analysis Services is not a supported data source for Copy activity.
Question 284 of 851
DP-203 Develop data processing Practice Question
This DP-203 practice question tests your understanding of develop data processing. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO of the following are supported sources for Azure Data Factory Copy activity? (Choose two.)
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 a supported source for Azure Data Factory Copy activity because ADF includes a built-in Amazon S3 connector that allows data ingestion from S3 into Azure. This connector uses the S3 REST API to read objects, supporting both public and private buckets via access keys or IAM roles.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Azure Blob Storage
Why this is correct
Azure Blob Storage is a first-class source for Copy activity.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Analysis Services
Why it's wrong here
Azure Analysis Services is not a supported data source for Copy activity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often 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.
Detailed technical explanation
How to think about this question
ADF's Amazon S3 connector supports reading data in formats like Parquet, Avro, JSON, and CSV, and can handle large datasets by using parallel reads from multiple S3 partitions. Under the hood, the connector uses the AWS SDK for .NET to authenticate and list objects, and respects S3 request rate limits to avoid throttling. A real-world scenario is migrating terabytes of log files from S3 to Azure Data Lake Storage Gen2, where ADF can automatically partition the copy based on S3 object prefixes.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 |
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Questions learners often ask
What does this DP-203 question test?
Develop data processing — This question tests Develop data processing — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Amazon S3 — Amazon S3 is a supported source for Azure Data Factory Copy activity because ADF includes a built-in Amazon S3 connector that allows data ingestion from S3 into Azure. This connector uses the S3 REST API to read objects, supporting both public and private buckets via access keys or IAM roles.
What should I do if I get this DP-203 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jul 4, 2026
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