The correct answer is to copy the previous version of the object to the same key, making it the current version. This works because S3 versioning preserves every object upload as a distinct version ID, and the current version is simply the one most recently written to a given key. By copying an older version ID to that key, you overwrite the current version with the historical data, effectively performing a rollback without deleting any other versions. On the AWS Certified Developer Associate DVA-C02 exam, this concept tests your understanding that S3 has no built-in “restore” button for versioning—you must use the CopyObject API or the console’s copy action. A common trap is thinking that deleting the current version promotes the previous one, but deletion only adds a delete marker, leaving the previous version non-current. Remember the memory tip: “Copy to crown”—copy the old version to make it the new current version.
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. 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 developer is deploying a static website to Amazon S3. The developer wants to enable versioning to easily roll back to a previous version if the new deployment has issues. After enabling versioning on the bucket, the developer uploads the new files. How can the developer roll back to the previous version?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Copy the previous version of the object to the same key, making it the current version.
Option B is correct because with versioning enabled, you can restore a previous version by copying it to the same key, making it the current version. Option A is wrong because deleting the current version does not restore the previous one. Option C is wrong because there is no 'Restore' action like in RDS. Option D is wrong because you cannot simply 'enable' a previous version; you must copy it.
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.
✓
Copy the previous version of the object to the same key, making it the current version.
Why this is correct
This replaces the current version with the previous one.
Related concept
Read the scenario before looking for a memorised answer.
✗
Delete the current version of the object from the bucket.
Why it's wrong here
Deleting the current version creates a delete marker, not a restore.
✗
Use the S3 console 'Restore' action on the bucket.
Why it's wrong here
S3 does not have a 'Restore' action for object versions.
✗
Enable 'Show versions' and then select the previous version to make it current.
Why it's wrong here
There is no option to 'make current'; you must copy it.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Copy the previous version of the object to the same key, making it the current version. — Option B is correct because with versioning enabled, you can restore a previous version by copying it to the same key, making it the current version. Option A is wrong because deleting the current version does not restore the previous one. Option C is wrong because there is no 'Restore' action like in RDS. Option D is wrong because you cannot simply 'enable' a previous version; you must copy it.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This DVA-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 DVA-C02 exam.
Question Discussion
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