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. 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 claims portal stores audit logs in S3. The compliance team requires that logs cannot be overwritten or deleted for seven years. What should be configured?
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
C is correct because S3 Object Lock in compliance mode enforces a write-once-read-many (WORM) model that prevents any user, including the root user, from overwriting or deleting objects for the specified retention period. This meets the compliance team's requirement that logs cannot be altered or removed for seven years, as compliance mode provides the highest level of protection and cannot be bypassed or shortened.
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.
✗
S3 server access logging
Why it's wrong here
Access logging records requests but does not enforce immutability.
✗
S3 versioning only
Why it's wrong here
Versioning preserves prior versions but does not prevent deletion or overwriting by authorized users.
✓
S3 Object Lock in compliance mode with an appropriate retention period
Why this is correct
Object Lock compliance mode enforces write-once-read-many retention that even privileged users cannot bypass during the retention period.
Related concept
Read the scenario before looking for a memorised answer.
✗
S3 lifecycle expiration after seven years
Why it's wrong here
Lifecycle expiration deletes data; it does not prevent deletion before that date.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse versioning (which only preserves history but allows deletion via delete markers) with Object Lock's ability to enforce immutability, or they mistakenly think server access logging or lifecycle policies can prevent data modification.
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, and the lock cannot be removed by any user, including the AWS account root user, until the period expires. Under the hood, S3 applies a legal hold or retention date to each object version, and any PUT or DELETE request that would violate the lock is rejected with an AccessDenied error. A real-world scenario is financial or healthcare audit logs that must remain immutable for regulatory compliance (e.g., SEC Rule 17a-4 or HIPAA).
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.
Design Secure Architectures — This question tests Design Secure Architectures — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: S3 Object Lock in compliance mode with an appropriate retention period — C is correct because S3 Object Lock in compliance mode enforces a write-once-read-many (WORM) model that prevents any user, including the root user, from overwriting or deleting objects for the specified retention period. This meets the compliance team's requirement that logs cannot be altered or removed for seven years, as compliance mode provides the highest level of protection and cannot be bypassed or shortened.
What should I do if I get this SAA-C03 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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Question Discussion
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