This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and 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.
You are using Azure Purview to scan an Azure Data Lake Storage Gen2 account. After scanning, you notice that some files are not classified. What is the most likely reason?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
The storage account is not registered in Purview
Why wrong: Must be registered, but that would prevent scanning entirely.
The files are in Parquet format
Why wrong: Purview supports Parquet.
The classification rules are disabled
Why wrong: Classification rules are enabled by default.
The file types are not included in the scan rule set
Default rule sets may not include all file types.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The file types are not included in the scan rule set
Purview uses scan rule sets to classify data. If the file type is not included in the default scan rule set, it will be skipped. Option A is wrong because Purview can scan Parquet/CSV. Option B is wrong because registration is required. Option D is wrong because classification rules are defined in rule sets.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The storage account is not registered in Purview
Why it's wrong here
Must be registered, but that would prevent scanning entirely.
The files are in Parquet format
Why it's wrong here
Purview supports Parquet.
The classification rules are disabled
Why it's wrong here
Classification rules are enabled by default.
The file types are not included in the scan rule set
Why this is correct
Default rule sets may not include all file types.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
Identify which DP-203 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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FAQ
Secure, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Read the scenario before looking for a memorised answer..
The correct answer is: The file types are not included in the scan rule set — Purview uses scan rule sets to classify data. If the file type is not included in the default scan rule set, it will be skipped. Option A is wrong because Purview can scan Parquet/CSV. Option B is wrong because registration is required. Option D is wrong because classification rules are defined in rule sets.
Identify which DP-203 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 21, 2026
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