The answer is S3 Object Lock in compliance mode with a seven-year retention period. This configuration enforces WORM protection for audit logs, meaning no user—including the root user—can overwrite or delete the objects during the specified duration, which directly satisfies the immutability requirement without any custom operational scripts. On the SAA-C03 exam, this scenario tests your understanding of the difference between compliance mode and governance mode: compliance mode is the only option that provides an absolute, unremovable lock, making it the correct choice for regulatory mandates like audit log retention. A common trap is selecting governance mode, which allows certain users with special permissions to bypass the lock, or suggesting a lifecycle policy, which cannot prevent deletions. Memory tip: think “Compliance = Cannot be Changed,” as in a legal hold that even root cannot break.
SAA-C03 Design Secure Architectures Practice Question
This SAA-C03 practice question tests your understanding of design secure architectures. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: s3 Object Lock supports WORM (Write Once, Read Many) model.. 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 mobile banking backend stores audit logs in S3. The compliance team requires that logs cannot be overwritten or deleted for seven years. What should be configured? The design must avoid adding custom operational scripts.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
S3 Object Lock in compliance mode with an appropriate retention period
S3 Object Lock in compliance mode prevents any user, including the root user, from overwriting or deleting objects for the specified retention period. This meets the compliance requirement of immutable audit logs for seven years without custom scripts. Compliance mode enforces a legal hold that cannot be removed by any user, ensuring logs are write-once-read-many (WORM) protected.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose versioning (option C) thinking it prevents deletion, but versioning alone does not block overwrites or permanent deletion of the current version without additional safeguards like MFA delete or Object Lock.
Detailed technical explanation
How to think about this question
S3 Object Lock uses a retention mode (compliance or governance) and a retention period (days or years). In compliance mode, the retention period cannot be shortened or removed by any user, including the AWS account root user, ensuring true immutability. Under the hood, Object Lock integrates with S3's bucket-level settings and applies a legal hold or retention date to each object version, which must expire before the object can be deleted or overwritten.
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
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Review s3 Object Lock supports WORM (Write Once, Read Many) model., then practise related SAA-C03 questions on the same topic to reinforce the concept.
The correct answer is: S3 Object Lock in compliance mode with an appropriate retention period — S3 Object Lock in compliance mode prevents any user, including the root user, from overwriting or deleting objects for the specified retention period. This meets the compliance requirement of immutable audit logs for seven years without custom scripts. Compliance mode enforces a legal hold that cannot be removed by any user, ensuring logs are write-once-read-many (WORM) protected.
What should I do if I get this SAA-C03 question wrong?
Review s3 Object Lock supports WORM (Write Once, Read Many) model., then practise related SAA-C03 questions on the same topic to reinforce the concept.
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A mobile banking backend stores audit logs in S3. The compliance team requires that logs cannot be overwritten or deleted for seven years. What should be configured?
medium
A.S3 server access logging
B.S3 lifecycle expiration after seven years
C.S3 versioning only
✓ D.S3 Object Lock in compliance mode with an appropriate retention period
Why D: S3 Object Lock in compliance mode prevents any user, including the root user, from overwriting or deleting objects until the retention period expires. This meets the compliance requirement of immutable audit logs for seven years, as compliance mode enforces a legal hold that cannot be removed by any party.
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