DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
You have an Azure Data Lake Storage Gen2 account that stores parquet files. You need to ensure that files containing personally identifiable information (PII) are automatically classified and tagged. Which Azure service should you integrate?
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
✓
Microsoft Purview
Microsoft Purview provides automated data classification and labeling for Azure Storage, including Azure Data Lake Storage Gen2. Option A is wrong because Azure Policy enforces rules but does not classify content. Option B is wrong because Microsoft Sentinel is a SIEM, not for classification. Option C is wrong because Microsoft Defender for Cloud is for security posture, not data classification.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Azure Policy
Why it's wrong here
Azure Policy enforces governance rules and audits resource configurations, but it cannot inspect parquet file contents to detect PII. It is tempting because Policy does support data classification built-in definitions for storage accounts, yet those rely on Microsoft Purview actually scanning the data first.
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Microsoft Sentinel
Why it's wrong here
Microsoft Sentinel is a SIEM that ingests logs and correlates security events; it does not scan parquet contents to classify PII. It is tempting because it integrates with storage diagnostics, but its role is detection and response, not data cataloguing or applying sensitivity labels to files.
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Microsoft Defender for Cloud
Why it's wrong here
Microsoft Defender for Cloud provides threat protection and security posture findings for storage, not content-level PII discovery or tagging. It is tempting because it surfaces data-security alerts, but it detects anomalous access and misconfiguration rather than classifying individual parquet files by information type.
- ✓
Microsoft Purview
Why this is correct
Microsoft Purview provides automated data classification and sensitivity labelling across data sources, including Azure Data Lake Storage Gen2. Its scanning engine detects PII using built-in classification rules and applies tags automatically, satisfying the requirement to classify and tag files without manual intervention.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DP-203 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DP-203 exam.