- A
Create a bucket policy that denies s3:DeleteObject and s3:PutObject to all principals.
Why wrong: Root user can modify or delete the bucket policy itself, then delete objects.
- B
Enable MFA Delete on the S3 bucket and configure CloudTrail to log to that bucket.
Why wrong: MFA Delete can be bypassed by root user if they have MFA; it also does not prevent modification.
- C
Enable CloudTrail log file validation and store logs in a separate account.
Why wrong: Validation detects tampering but does not prevent deletion or modification.
- D
Enable S3 Object Lock in Governance mode with a retention period, and use a separate account to manage the retention settings.
Object Lock prevents object deletion/modification, and Governance mode allows only users with special permissions to bypass retention, which can be restricted to a different account.
Quick Answer
The answer is to enable S3 Object Lock in Governance mode with a retention period and store the logs in a separate account that manages the retention settings. This configuration is correct because Governance mode prevents any user, including the root user of the source account, from deleting or overwriting objects before the retention period expires, while the separate account acts as a hardened lockbox that enforces the retention policy independently. On the AWS Certified Security Specialty SCS-C02 exam, this scenario tests your understanding of defense-in-depth for centralized logging, where the common trap is choosing Compliance mode (which is irreversible) or relying on bucket policies alone, which root users can bypass. The key insight is that Governance mode allows temporary lock removal only by users with specific permissions in the lock-managing account, not the source account. Memory tip: think “Governance gives grace, Compliance is concrete”—Governance mode lets you adjust locks if needed, but Compliance mode locks them forever, making Governance the practical choice for tamper-proof CloudTrail logs in multi-account setups.
SCS-C02 Management and Security Governance Practice Question
This SCS-C02 practice question tests your understanding of management and security governance. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 is designing a centralized logging solution for a multi-account AWS environment. They need to ensure log files are tamper-proof and cannot be deleted or modified by anyone, including the root user of any account. Which configuration meets 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
Enable S3 Object Lock in Governance mode with a retention period, and use a separate account to manage the retention settings.
Option D is correct because S3 Object Lock in Governance mode prevents any user, including the root user, from deleting or overwriting objects until the retention period expires. By storing the logs in a separate account that manages the retention settings, the security engineer ensures that even if an attacker compromises the source account, they cannot modify or delete the logs because the lock is enforced by the destination account's S3 configuration.
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.
- ✗
Create a bucket policy that denies s3:DeleteObject and s3:PutObject to all principals.
Why it's wrong here
Root user can modify or delete the bucket policy itself, then delete objects.
- ✗
Enable MFA Delete on the S3 bucket and configure CloudTrail to log to that bucket.
Why it's wrong here
MFA Delete can be bypassed by root user if they have MFA; it also does not prevent modification.
- ✗
Enable CloudTrail log file validation and store logs in a separate account.
Why it's wrong here
Validation detects tampering but does not prevent deletion or modification.
- ✓
Enable S3 Object Lock in Governance mode with a retention period, and use a separate account to manage the retention settings.
Why this is correct
Object Lock prevents object deletion/modification, and Governance mode allows only users with special permissions to bypass retention, which can be restricted to a different account.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse MFA Delete (which only adds an extra authentication step for deletion but does not prevent root user deletion) with S3 Object Lock (which provides immutable storage that cannot be deleted or modified by any user, including root, during the retention period).
Detailed technical explanation
How to think about this question
S3 Object Lock in Governance mode uses a retention period (specified in days or years) that prevents any user without the s3:BypassGovernanceRetention permission from overwriting or deleting locked objects. The retention settings are managed via the bucket's default retention configuration or applied per-object, and the lock is enforced at the S3 API level, meaning even the root user of the source account cannot bypass it unless they have explicit permissions in the destination account. In a multi-account setup, the destination account's root user could theoretically grant themselves the bypass permission, but by using a separate account to manage retention settings (e.g., a dedicated logging account with strict IAM policies), the risk is minimized.
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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FAQ
Questions learners often ask
What does this SCS-C02 question test?
Management and Security Governance — This question tests Management and Security Governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable S3 Object Lock in Governance mode with a retention period, and use a separate account to manage the retention settings. — Option D is correct because S3 Object Lock in Governance mode prevents any user, including the root user, from deleting or overwriting objects until the retention period expires. By storing the logs in a separate account that manages the retention settings, the security engineer ensures that even if an attacker compromises the source account, they cannot modify or delete the logs because the lock is enforced by the destination account's S3 configuration.
What should I do if I get this SCS-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 SCS-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 SCS-C02 exam.
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