- A
Use S3 Lifecycle policy to delete objects after 30 days.
Why wrong: Deleting early violates retention requirement.
- B
Store objects in S3 One Zone-IA from the start.
Why wrong: One Zone-IA is not durable for compliance.
- C
Use S3 Lifecycle policy to transition objects to S3 Glacier after 1 year.
Glacier is low-cost for archival.
- D
Enable S3 Lifecycle policy to expire objects after 7 years.
Expiration deletes objects automatically.
- E
Use S3 Lifecycle policy to transition objects to S3 Standard-IA after 30 days.
Standard-IA is cost-effective for infrequent access.
Question 845 of 1,616
DVA-C02 Troubleshooting and Optimization Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 is using Amazon S3 to store log files. The logs are rarely accessed after 30 days but must be retained for 7 years for compliance. Which THREE actions should the company take to optimize storage costs?
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
✓
Use S3 Lifecycle policy to transition objects to S3 Glacier after 1 year.
Option C is correct because transitioning objects to S3 Glacier after 1 year reduces storage costs for long-term retention while maintaining compliance. Option D is correct because lifecycle policies can expire objects after 7 years, meeting the retention requirement. Option E is correct because transitioning to S3 Standard-IA after 30 days optimizes costs for infrequently accessed logs. Option A is wrong because deleting objects after 30 days violates the 7-year retention requirement. Option B is wrong because S3 One Zone-IA lacks the durability needed for compliance data and is not cost-effective if logs are accessed frequently in the first 30 days.
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.
- ✗
Use S3 Lifecycle policy to delete objects after 30 days.
Why it's wrong here
Deleting early violates retention requirement.
- ✗
Store objects in S3 One Zone-IA from the start.
Why it's wrong here
One Zone-IA is not durable for compliance.
- ✓
Use S3 Lifecycle policy to transition objects to S3 Glacier after 1 year.
Why this is correct
Glacier is low-cost for archival.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Enable S3 Lifecycle policy to expire objects after 7 years.
Why this is correct
Expiration deletes objects automatically.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Use S3 Lifecycle policy to transition objects to S3 Standard-IA after 30 days.
Why this is correct
Standard-IA is cost-effective for infrequent access.
Related concept
Read the scenario before looking for a memorised answer.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
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.
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Troubleshooting and Optimization — study guide chapter
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use S3 Lifecycle policy to transition objects to S3 Glacier after 1 year. — Option C is correct because transitioning objects to S3 Glacier after 1 year reduces storage costs for long-term retention while maintaining compliance. Option D is correct because lifecycle policies can expire objects after 7 years, meeting the retention requirement. Option E is correct because transitioning to S3 Standard-IA after 30 days optimizes costs for infrequently accessed logs. Option A is wrong because deleting objects after 30 days violates the 7-year retention requirement. Option B is wrong because S3 One Zone-IA lacks the durability needed for compliance data and is not cost-effective if logs are accessed frequently in the first 30 days.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 20, 2026
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