The correct choice is to create an Azure Function triggered by Blob Storage events to detect PII, redact, and save to a separate container. This works because Azure Functions provide a serverless, event-driven compute model that reacts instantly to new blobs, calling the Azure AI Language PII detection API to identify entities like names or social security numbers, then programmatically redacting them before writing the sanitized file to a different container—all with minimal latency. On the AI-102 exam, this scenario tests your understanding of serverless integration patterns versus higher-latency alternatives; a common trap is selecting Logic Apps, which introduces connector overhead and slower response times, or Data Factory, which is designed for batch data movement rather than real-time document processing. Remember the key principle: for low-latency, event-driven redaction, always pair Blob Storage triggers with Azure Functions, not orchestration tools. Memory tip: “Blob fires, Function redacts, container splits.”
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.
A legal compliance team needs to automatically redact personally identifiable information (PII) from legal documents before sharing them with external auditors. The documents are stored in Azure Blob Storage. The solution must use Azure AI Language to detect PII and then redact the identified entities. The redaction must be performed on the original documents, and the redacted versions must be saved to a separate container. You need to design a serverless solution with minimal latency. What should you do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create an Azure Function triggered by Blob Storage events to detect PII, redact, and save to a separate container.
Azure Functions can be triggered by Blob Storage events, process each document using the PII detection API, redact the entities, and save the redacted version to a separate container. This is serverless and efficient. Option C is correct. Option A is wrong because Logic Apps has higher latency due to connectors. Option B is wrong because Data Factory is for data movement. Option D is wrong because Batch Service is for large-scale batch processing, not real-time.
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 Data Factory to copy documents to a processing location and call an Azure Function.
Why it's wrong here
Data Factory is not designed for real-time document processing with redaction.
✗
Use Azure Batch Service to process documents in parallel and redact PII.
Why it's wrong here
Batch Service is for batch processing, not real-time event-driven scenarios.
✓
Create an Azure Function triggered by Blob Storage events to detect PII, redact, and save to a separate container.
Why this is correct
Azure Functions provide low-latency, serverless event-driven processing.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Azure Logic Apps with a Blob trigger to call the PII detection API and write redacted documents.
Why it's wrong here
Logic Apps introduces more overhead and latency compared to Functions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
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.
Trap categories for this question
Scenario analysis trap
Batch Service is for batch processing, not real-time event-driven scenarios.
Detailed technical explanation
How to think about this question
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.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
What to study next
Got this wrong? Here's your next step.
Identify which AI-102 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.
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: Create an Azure Function triggered by Blob Storage events to detect PII, redact, and save to a separate container. — Azure Functions can be triggered by Blob Storage events, process each document using the PII detection API, redact the entities, and save the redacted version to a separate container. This is serverless and efficient. Option C is correct. Option A is wrong because Logic Apps has higher latency due to connectors. Option B is wrong because Data Factory is for data movement. Option D is wrong because Batch Service is for large-scale batch processing, not real-time.
What should I do if I get this AI-102 question wrong?
Identify which AI-102 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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