- A
AWS Config with an AWS Config rule and an automatic remediation action
AWS Config can evaluate resource configurations against rules (e.g., 's3-bucket-public-read-prohibited') and automatically trigger a remediation action, such as an SSM Automation document, to fix non-compliant resources like S3 buckets without manual intervention. This matches the requirement.
- B
Amazon GuardDuty
Why wrong: Amazon GuardDuty is a threat detection service that identifies suspicious activity and potential security threats using machine learning. It does not evaluate or remediate resource configuration compliance such as S3 bucket public access settings.
- C
AWS CloudTrail
Why wrong: AWS CloudTrail records API calls made in the AWS account for auditing, governance, and security analysis. It does not proactively check resource configurations or apply automatic remediation.
- D
AWS Identity and Access Management (IAM)
Why wrong: AWS IAM manages users, groups, roles, and policies to control access to AWS services and resources. It does not monitor or enforce configuration compliance on resources like S3 buckets.
CLF-C02 Security and Compliance Practice Question
This CLF-C02 practice question tests your understanding of security and compliance. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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's compliance team needs to enforce a policy that all Amazon S3 buckets must have 'Block all public access' enabled. If a bucket is created without this setting, the company wants the policy to be automatically remediated within minutes without manual intervention. The solution must check for compliance continuously and apply the fix automatically. Which AWS service should the company use to meet these requirements?
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
AWS Config with an AWS Config rule and an automatic remediation action
AWS Config can continuously evaluate the configuration of S3 buckets against a managed rule like 's3-bucket-public-read-prohibited' or 's3-bucket-public-write-prohibited'. When a noncompliant bucket is detected, AWS Config can automatically trigger a remediation action using an AWS Systems Manager Automation document (e.g., 'AWS-DisableS3BucketPublicReadWrite') to enable 'Block all public access' within minutes, 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.
- ✓
AWS Config with an AWS Config rule and an automatic remediation action
Why this is correct
AWS Config can evaluate resource configurations against rules (e.g., 's3-bucket-public-read-prohibited') and automatically trigger a remediation action, such as an SSM Automation document, to fix non-compliant resources like S3 buckets without manual intervention. This matches the requirement.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon GuardDuty
Why it's wrong here
Amazon GuardDuty is a threat detection service that identifies suspicious activity and potential security threats using machine learning. It does not evaluate or remediate resource configuration compliance such as S3 bucket public access settings.
- ✗
AWS CloudTrail
Why it's wrong here
AWS CloudTrail records API calls made in the AWS account for auditing, governance, and security analysis. It does not proactively check resource configurations or apply automatic remediation.
- ✗
AWS Identity and Access Management (IAM)
Why it's wrong here
AWS IAM manages users, groups, roles, and policies to control access to AWS services and resources. It does not monitor or enforce configuration compliance on resources like S3 buckets.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Config's compliance and remediation capabilities with CloudTrail's logging or GuardDuty's threat detection, failing to recognize that only AWS Config provides continuous evaluation with automatic remediation actions.
Detailed technical explanation
How to think about this question
AWS Config remediation actions rely on AWS Systems Manager Automation runbooks, which are predefined or custom workflows that execute API calls (e.g., PutPublicAccessBlock) to fix noncompliant resources. The evaluation frequency can be set to proactive (e.g., every 1 hour) or triggered by configuration changes, ensuring near-real-time detection. In a real-world scenario, if a developer creates a bucket via the AWS CLI without specifying the public access block, AWS Config flags it within minutes and the remediation action automatically applies the block, preventing data exposure.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Security and Compliance — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Security and Compliance — This question tests Security and Compliance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Config with an AWS Config rule and an automatic remediation action — AWS Config can continuously evaluate the configuration of S3 buckets against a managed rule like 's3-bucket-public-read-prohibited' or 's3-bucket-public-write-prohibited'. When a noncompliant bucket is detected, AWS Config can automatically trigger a remediation action using an AWS Systems Manager Automation document (e.g., 'AWS-DisableS3BucketPublicReadWrite') to enable 'Block all public access' within minutes, without manual intervention.
What should I do if I get this CLF-C02 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.
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Last reviewed: Jun 11, 2026
This CLF-C02 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 CLF-C02 exam.
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