CCSP Cloud Security Operations Practice Question
A cloud security team wants to automatically detect and remediate S3 buckets that are publicly accessible. Which combination of AWS services can achieve this?
⚠ Common exam trap
This question tests the distinction between detection-only services (like Inspector, GuardDuty, CloudTrail) and services that can both detect and trigger automated remediation (Config + Lambda), leading candidates to pick a service that only detects but cannot remediate.
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 and AWS Lambda
AWS Config continuously evaluates S3 bucket configurations against rules (e.g., s3-bucket-public-read-prohibited) and can trigger an AWS Lambda function via Amazon EventBridge when a non-compliant change is detected. The Lambda function then automatically applies a remediation action, such as removing the public access block or updating the bucket policy, achieving automated detection and remediation without manual intervention.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon Inspector and AWS Security Hub
Why it's wrong here
Inspector scans for vulnerabilities; Security Hub aggregates findings; no auto-remediation.
- ✗
AWS WAF and Amazon Route 53
Why it's wrong here
WAF is a web application firewall; Route 53 is DNS; neither deals with S3 bucket policies.
- ✓
AWS Config and AWS Lambda
Why this is correct
Config evaluates rules and can invoke Lambda for auto-remediation.
- ✗
AWS CloudTrail and Amazon GuardDuty
Why it's wrong here
CloudTrail logs API calls, GuardDuty detects threats; neither automates remediation.
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 |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.