Quick Answer
The answer is Microsoft Purview Information Protection because it is the only service designed to automatically classify and apply sensitivity labels to new columns in Azure SQL Database as they are added, using built-in machine learning and pattern-matching capabilities to scan data for sensitive content like credit card numbers or social security numbers. On the Microsoft Azure Database Administrator Associate DP-300 exam, this question tests your understanding of how data governance tools differ from security controls—a common trap is confusing Azure Policy, which enforces compliance rules but cannot scan or label data, or Dynamic Data Masking, which obfuscates data without classification. Remember that classification is about identifying and labeling sensitive data, not masking or automating tasks, so Purview is the clear choice. A helpful memory tip: think “Purview for preview and protect,” as it provides visibility into your data landscape and applies labels automatically.
This DP-300 practice question tests your understanding of configure and manage automation of tasks. 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 have an Azure SQL Database that stores sensitive data. You need to automatically classify and apply sensitivity labels to new columns as they are added. What should you use?
Microsoft Purview Information Protection
Purview can automatically scan and classify sensitive data.
Azure Policy with custom policy definition
Why wrong: Azure Policy can enforce rules but not automatically classify data.
Dynamic Data Masking
Why wrong: Dynamic Data Masking obfuscates data but does not classify.
Azure Automation with PowerShell script to run sp_addsensitivityclassification
Why wrong: Manual scripting, not automatic.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Purview Information Protection
Option C is correct because Microsoft Purview Information Protection can automatically classify and label sensitive data in Azure SQL Database. Option A is wrong because Azure Policy can enforce policies but not auto-classify. Option B is wrong because Dynamic Data Masking masks data but does not classify. Option D is wrong because Azure Automation is not designed for classification.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Purview Information Protection
Why this is correct
Purview can automatically scan and classify sensitive data.
Related concept
CIDR notation defines the prefix length.
Azure Policy with custom policy definition
Why it's wrong here
Azure Policy can enforce rules but not automatically classify data.
Dynamic Data Masking
Why it's wrong here
Dynamic Data Masking obfuscates data but does not classify.
Azure Automation with PowerShell script to run sp_addsensitivityclassification
Why it's wrong here
Manual scripting, not automatic.
Common exam traps
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DP-300 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Configure and manage automation of tasks — This question tests Configure and manage automation of tasks — CIDR notation defines the prefix length..
The correct answer is: Microsoft Purview Information Protection — Option C is correct because Microsoft Purview Information Protection can automatically classify and label sensitive data in Azure SQL Database. Option A is wrong because Azure Policy can enforce policies but not auto-classify. Option B is wrong because Dynamic Data Masking masks data but does not classify. Option D is wrong because Azure Automation is not designed for classification.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related DP-300 subnetting questions on CIDR, address ranges, and subnet selection.
CIDR notation defines the prefix length.
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Last reviewed: Jun 21, 2026
This DP-300 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-300 exam.
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