- A
AWS Config rule + AWS Lambda auto-remediation
Config detects, Lambda remediates.
- B
Amazon GuardDuty + AWS Step Functions
Why wrong: GuardDuty detects threats, not configuration issues.
- C
AWS CloudTrail + Amazon SNS
Why wrong: CloudTrail logs API calls, does not trigger remediation.
- D
AWS Trusted Advisor + AWS Systems Manager
Why wrong: Trusted Advisor provides recommendations but not automated remediation.
Question 45 of 1,000
CCSP Cloud Security Operations Practice Question
This CCSP practice question tests your understanding of cloud security operations. 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 security engineer needs to automate the remediation of any S3 bucket that is publicly accessible. The solution should work within a single AWS account and not require manual intervention. Which combination of services is MOST appropriate?
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 rule + AWS Lambda auto-remediation
AWS Config can continuously evaluate S3 bucket settings against a custom or managed rule (e.g., s3-bucket-public-read-prohibited). When the rule detects a noncompliant bucket, it triggers an AWS Lambda function via auto-remediation, which can modify the bucket's ACL or policy to remove public access. This combination provides fully automated, event-driven remediation without manual steps.
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 rule + AWS Lambda auto-remediation
Why this is correct
Config detects, Lambda remediates.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon GuardDuty + AWS Step Functions
Why it's wrong here
GuardDuty detects threats, not configuration issues.
- ✗
AWS CloudTrail + Amazon SNS
Why it's wrong here
CloudTrail logs API calls, does not trigger remediation.
- ✗
AWS Trusted Advisor + AWS Systems Manager
Why it's wrong here
Trusted Advisor provides recommendations but not automated remediation.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between detection services (GuardDuty, CloudTrail) and configuration enforcement services (AWS Config), leading candidates to choose a monitoring-only solution that lacks remediation capabilities.
Detailed technical explanation
How to think about this question
AWS Config auto-remediation uses an SSM Automation document (or a custom Lambda) that is invoked when a resource is marked noncompliant. The Lambda function can call the S3 PutBucketAcl or PutBucketPolicy API with a private policy, and must handle eventual consistency by retrying if the change is not immediately reflected. In a real-world scenario, if a bucket has a bucket policy that grants public access via a Principal wildcard, the Lambda must parse and rewrite the policy, not just remove ACLs, to fully remediate.
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 security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Visual reference
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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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FAQ
Questions learners often ask
What does this CCSP question test?
Cloud Security Operations — This question tests Cloud Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Config rule + AWS Lambda auto-remediation — AWS Config can continuously evaluate S3 bucket settings against a custom or managed rule (e.g., s3-bucket-public-read-prohibited). When the rule detects a noncompliant bucket, it triggers an AWS Lambda function via auto-remediation, which can modify the bucket's ACL or policy to remove public access. This combination provides fully automated, event-driven remediation without manual steps.
What should I do if I get this CCSP 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
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.
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