- A
Use Azure AI Language's PII detection feature and a custom Azure Function to redact.
PII detection identifies PII, custom function redacts.
- B
Use Azure AI Search with cognitive skills for PII detection.
Why wrong: Azure AI Search does not redact.
- C
Use Azure OpenAI to detect and redact PII.
Why wrong: Azure OpenAI may not have built-in redaction.
- D
Use Text Analytics for Health and then manually redact.
Why wrong: No built-in redaction.
Question 17 of 993
AI-102 Practice Question: Implement natural language processing solutions
This AI-102 practice question tests your understanding of implement natural language processing solutions. 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 designing a solution that must extract personally identifiable information (PII) from medical records stored in Azure Blob Storage. The solution must redact the PII before storing the results. Which combination of Azure services should you use?
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
✓
Use Azure AI Language's PII detection feature and a custom Azure Function to redact.
Option A is correct because Azure AI Language's PII detection feature is specifically designed to identify and categorize PII entities in text, and combining it with a custom Azure Function allows you to programmatically redact those entities before storing the results in Blob Storage. This provides a serverless, scalable pipeline that meets the requirement of extracting and redacting PII from medical records without manual intervention.
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.
- ✓
Use Azure AI Language's PII detection feature and a custom Azure Function to redact.
Why this is correct
PII detection identifies PII, custom function redacts.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Azure AI Search with cognitive skills for PII detection.
Why it's wrong here
Azure AI Search does not redact.
- ✗
Use Azure OpenAI to detect and redact PII.
Why it's wrong here
Azure OpenAI may not have built-in redaction.
- ✗
Use Text Analytics for Health and then manually redact.
Why it's wrong here
No built-in redaction.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Text Analytics for Health (which is for medical entity extraction) with Azure AI Language's PII detection (which is for privacy compliance), leading them to choose Option D despite its lack of redaction capabilities.
Detailed technical explanation
How to think about this question
Under the hood, Azure AI Language's PII detection uses pre-trained models to identify entities like names, addresses, and social security numbers, returning their offsets and confidence scores. A custom Azure Function can then use these offsets to replace the original text with placeholders (e.g., '[REDACTED]') before writing the sanitized document to Blob Storage. In a real-world scenario, you might also need to handle batch processing of thousands of documents, where the Azure Function can be triggered by Blob Storage events to ensure near-real-time redaction.
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
Azure Blob Storage Tier Comparison
| Tier | Storage Cost | Retrieval Cost | Latency | Use Case |
|---|---|---|---|---|
| Hot | Highest | Lowest | Immediate | Active data, frequent reads |
| Cool | Lower | Higher | Immediate | Data accessed < once / month |
| Cold | Lower still | Higher | Immediate | Data accessed < once / quarter |
| Archive | Lowest | Highest + rehydration delay | Hours | Long-term compliance retention |
What to study next
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FAQ
Questions learners often ask
What does this AI-102 question test?
Implement natural language processing solutions — This question tests Implement natural language processing solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure AI Language's PII detection feature and a custom Azure Function to redact. — Option A is correct because Azure AI Language's PII detection feature is specifically designed to identify and categorize PII entities in text, and combining it with a custom Azure Function allows you to programmatically redact those entities before storing the results in Blob Storage. This provides a serverless, scalable pipeline that meets the requirement of extracting and redacting PII from medical records without manual intervention.
What should I do if I get this AI-102 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
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Last reviewed: Jul 4, 2026
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