- A
Use IAM groups to restrict access to CloudTrail and S3.
Why wrong: IAM policies can be bypassed by users with higher privileges; SCPs are more effective.
- B
Enable multi-factor authentication (MFA) delete on the S3 bucket.
MFA delete adds an extra layer of protection to prevent accidental or malicious deletion.
- C
Configure S3 bucket versioning and enable S3 Object Lock.
Versioning preserves objects, and Object Lock prevents deletion or overwrite.
- D
Attach a service control policy (SCP) to the account that denies cloudtrail:StopLogging and cloudtrail:DeleteTrail.
SCPs can block actions on CloudTrail even for the root user.
- E
Store CloudTrail logs in a separate account that only the security team can access.
Why wrong: While this is a good practice, it does not protect the trail itself in the production account.
Protecting CloudTrail Logs with MFA Delete, S3 Object Lock, and SCPs
This SAP-C02 practice question tests your understanding of design solutions for organizational complexity. 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 has a production AWS account that contains sensitive data. The security team wants to ensure that no one can disable AWS CloudTrail or delete the CloudTrail S3 bucket. Which THREE actions should be taken to protect these resources? (Choose three.)
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
Enable multi-factor authentication (MFA) delete on the S3 bucket.
Option B is correct because enabling MFA delete on the S3 bucket adds an extra layer of security, requiring multi-factor authentication for any delete operations on the bucket or its objects. This prevents unauthorized or accidental deletion of the CloudTrail log bucket, even if an attacker gains full IAM permissions.
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 IAM groups to restrict access to CloudTrail and S3.
Why it's wrong here
IAM policies can be bypassed by users with higher privileges; SCPs are more effective.
- ✓
Enable multi-factor authentication (MFA) delete on the S3 bucket.
Why this is correct
MFA delete adds an extra layer of protection to prevent accidental or malicious deletion.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Configure S3 bucket versioning and enable S3 Object Lock.
Why this is correct
Versioning preserves objects, and Object Lock prevents deletion or overwrite.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Attach a service control policy (SCP) to the account that denies cloudtrail:StopLogging and cloudtrail:DeleteTrail.
Why this is correct
SCPs can block actions on CloudTrail even for the root user.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Store CloudTrail logs in a separate account that only the security team can access.
Why it's wrong here
While this is a good practice, it does not protect the trail itself in the production account.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often overlook the need for multiple complementary controls (MFA delete, S3 Object Lock, and SCPs) and instead choose a single measure like IAM groups or cross-account storage, which do not fully address the requirement to prevent disabling or deletion of CloudTrail and its S3 bucket.
Detailed technical explanation
How to think about this question
MFA delete works by requiring a time-based one-time password (TOTP) from a hardware or virtual MFA device for any s3:DeleteBucket or s3:DeleteObjectVersion operation. This is enforced at the bucket policy level via the 'aws:MultiFactorAuthPresent' condition key, and once enabled, even the root user must authenticate with MFA to delete the bucket. S3 Object Lock, combined with versioning, provides a write-once-read-many (WORM) model that prevents objects from being deleted or overwritten for a specified retention period, ensuring CloudTrail logs remain immutable.
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.
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
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Design Solutions for Organizational Complexity — This question tests Design Solutions for Organizational Complexity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable multi-factor authentication (MFA) delete on the S3 bucket. — Option B is correct because enabling MFA delete on the S3 bucket adds an extra layer of security, requiring multi-factor authentication for any delete operations on the bucket or its objects. This prevents unauthorized or accidental deletion of the CloudTrail log bucket, even if an attacker gains full IAM permissions.
What should I do if I get this SAP-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: Jul 4, 2026
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