The answer is to use Azure AI Language’s PII detection feature combined with a custom Azure Function to perform the redaction. Azure AI Language provides a specialized PII detection capability that identifies sensitive entities like patient names, social security numbers, and medical record numbers within unstructured text, but it does not natively overwrite or remove those entities from the document. A custom Azure Function is therefore required to programmatically replace the detected PII spans with placeholder tokens before storing the cleaned results back into Blob Storage. On the AI-102 exam, this scenario tests your understanding of service boundaries—specifically that Azure AI Search indexes content without modifying it, Text Analytics for Health focuses on clinical entities rather than general PII redaction, and Azure OpenAI lacks built-in redaction logic. A common trap is assuming a single service can both detect and redact; remember that detection and redaction are separate responsibilities. Memory tip: “Detect with Language, redact with Function.”
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 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 can detect PII, and a custom function can redact it. Option B is incorrect because Azure AI Search does not redact. Option C is incorrect because Text Analytics for Health does not redact. Option D is incorrect because Azure OpenAI may not have built-in redaction.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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
Static NAT maps one inside address to one outside address.
✗
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: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AI-102 NAT questions on configuration and troubleshooting.
Implement natural language processing solutions — This question tests Implement natural language processing solutions — Static NAT maps one inside address to one outside address..
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 can detect PII, and a custom function can redact it. Option B is incorrect because Azure AI Search does not redact. Option C is incorrect because Text Analytics for Health does not redact. Option D is incorrect because Azure OpenAI may not have built-in redaction.
What should I do if I get this AI-102 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AI-102 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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