This AIF-C01 practice question tests your understanding of security, compliance and governance for ai 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 company is using Amazon Bedrock to deploy a foundation model. To comply with GDPR, they need to ensure that the model does not generate outputs containing personally identifiable information (PII). Which AWS service can best help detect and redact PII from the model's responses?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Amazon Comprehend
Amazon Comprehend has PII detection and redaction features.
Amazon GuardDuty
Why wrong: GuardDuty is a threat detection service, not for PII.
Amazon Rekognition
Why wrong: Rekognition is for image/video analysis, not text PII detection.
AWS WAF
Why wrong: AWS WAF is a web application firewall, not for PII detection.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon Comprehend
Amazon Comprehend is the correct service because it provides a built-in PII detection and redaction capability that can be integrated with Amazon Bedrock. Using the `DetectPiiEntities` API, you can scan model responses for PII such as names, addresses, and credit card numbers, and then redact or mask those entities before returning the output to the user. This directly addresses the GDPR requirement to prevent PII leakage from generative AI outputs.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon Comprehend
Why this is correct
Amazon Comprehend has PII detection and redaction features.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Amazon GuardDuty
Why it's wrong here
GuardDuty is a threat detection service, not for PII.
Amazon Rekognition
Why it's wrong here
Rekognition is for image/video analysis, not text PII detection.
AWS WAF
Why it's wrong here
AWS WAF is a web application firewall, not for PII detection.
Common exam traps
Cisco often tests the distinction between security monitoring services (GuardDuty, WAF) and content analysis services (Comprehend), leading candidates to mistakenly choose a network-level security tool for a data content problem.
Detailed technical explanation
Under the hood, Amazon Comprehend uses a combination of machine learning models and pattern-based rules to identify PII entities across multiple categories (e.g., NAME, ADDRESS, SSN, CREDIT_DEBIT_NUMBER). When integrated with Bedrock, you can implement a middleware layer that calls Comprehend's `DetectPiiEntities` on the model's response, then uses the returned `Score` and `Type` fields to redact or mask the sensitive text. A subtle behavior is that Comprehend's PII detection is not 100% accurate, so for GDPR compliance you may need to combine it with additional validation or a confidence threshold to avoid false negatives.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. 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
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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FAQ
Security, Compliance and Governance for AI Solutions — This question tests Security, Compliance and Governance for AI Solutions — Read the scenario before looking for a memorised answer..
The correct answer is: Amazon Comprehend — Amazon Comprehend is the correct service because it provides a built-in PII detection and redaction capability that can be integrated with Amazon Bedrock. Using the `DetectPiiEntities` API, you can scan model responses for PII such as names, addresses, and credit card numbers, and then redact or mask those entities before returning the output to the user. This directly addresses the GDPR requirement to prevent PII leakage from generative AI outputs.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This AIF-C01 practice question is part of Courseiva's free Amazon Web Services 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 AIF-C01 exam.
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