DOP-C02 Resilient Cloud Solutions Practice Question
This DOP-C02 practice question tests your understanding of resilient cloud solutions. 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 company has an Amazon S3 bucket that stores critical data. The company wants to protect the data from accidental deletion and ensure that even the root user cannot delete the bucket. Which S3 feature should the company enable?
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 with compliance retention mode.
Option C is correct because S3 Object Lock with compliance retention mode prevents any user, including the root user, from deleting or overwriting objects until the retention period expires. Compliance mode applies a strict, immutable lock that cannot be removed or shortened by any user, including the AWS account root user, ensuring the data is protected against accidental or malicious deletion.
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 bucket policy that denies s3:DeleteBucket for all principals.
Why it's wrong here
Root user can still delete because bucket policies do not apply to the root user.
✗
S3 bucket versioning with MFA delete.
Why it's wrong here
MFA delete prevents deletion without MFA, but root can still delete if MFA is provided.
✓
S3 Object Lock with compliance retention mode.
Why this is correct
Compliance mode prevents any user, including root, from deleting objects.
Related concept
Read the scenario before looking for a memorised answer.
✗
S3 bucket versioning with lifecycle policy to expire noncurrent versions.
Why it's wrong here
Does not prevent deletion of current versions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse S3 Object Lock with versioning or MFA delete, thinking that versioning alone prevents deletion, but versioning only protects against overwrites and allows recovery via delete markers, not against intentional deletion by the root user.
Detailed technical explanation
How to think about this question
S3 Object Lock compliance mode uses a WORM (Write Once, Read Many) model where the retention mode is stored as object metadata and enforced at the S3 API level. Even the root user cannot bypass this lock because the compliance retention period is immutable once set, and AWS does not provide a mechanism to override it, unlike governance mode which allows certain users to shorten retention. In a real-world scenario, this is critical for meeting regulatory requirements like SEC Rule 17a-4(f) or FINRA rules, where data must be retained in a non-rewritable, non-erasable format.
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.
Resilient Cloud Solutions — This question tests Resilient Cloud Solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: S3 Object Lock with compliance retention mode. — Option C is correct because S3 Object Lock with compliance retention mode prevents any user, including the root user, from deleting or overwriting objects until the retention period expires. Compliance mode applies a strict, immutable lock that cannot be removed or shortened by any user, including the AWS account root user, ensuring the data is protected against accidental or malicious deletion.
What should I do if I get this DOP-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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Question Discussion
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