- A
After 30 days, transition to S3 Standard-IA; after 365 days, transition to S3 Glacier Deep Archive; delete after 5 years.
Why wrong: S3 Standard-IA is more expensive than Glacier Flexible Retrieval for data that is rarely accessed. Using Glacier Flexible Retrieval for the middle tier would be more cost-effective given the rare access pattern after 30 days.
- B
After 30 days, transition to S3 Glacier Flexible Retrieval; after 365 days, transition to S3 Glacier Deep Archive; delete after 5 years.
This lifecycle provides cost-optimized storage: S3 Standard for the first 30 days (frequent access), S3 Glacier Flexible Retrieval for the next 335 days (rare access, 12-hour retrieval acceptable), and S3 Glacier Deep Archive for the final 4+ years (extremely rare access, lowest cost). This minimizes overall costs while meeting retrieval requirements.
- C
After 30 days, transition to S3 Glacier Flexible Retrieval; delete after 5 years.
Why wrong: This lifecycle lacks the transition to S3 Glacier Deep Archive after 1 year. Since the data is extremely rarely accessed after 1 year, storing it in Glacier Flexible Retrieval is more expensive than Glacier Deep Archive.
- D
After 30 days, transition to S3 Glacier Deep Archive; delete after 5 years.
Why wrong: Transitioning directly to S3 Glacier Deep Archive after 30 days disregards the fact that data is accessed rarely but still occasionally (within 12 hours) for the first year. Glacier Deep Archive has lower storage cost but higher retrieval costs, and for data that may be accessed a few times a year, Glacier Flexible Retrieval is more cost-effective overall.
Quick Answer
The correct answer is to transition objects to S3 Glacier Flexible Retrieval after 30 days, then to S3 Glacier Deep Archive after 365 days, and delete them after 5 years. This configuration minimizes costs because S3 Glacier Flexible Retrieval meets the 12-hour retrieval requirement for the rarely accessed logs during the first year, while S3 Glacier Deep Archive offers the lowest storage cost for the subsequent four years of compliance archiving where retrievals are extremely rare. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your ability to map access patterns to the correct storage class, with a common trap being selecting S3 Standard-IA for the first transition, which is more expensive and still unnecessary for 12-hour retrieval tolerance. Remember that S3 Glacier Flexible Retrieval supports retrievals from minutes up to 12 hours, making it ideal for data that is rarely accessed but still needs faster recovery than Deep Archive. A helpful memory tip: "30 days hot, then Flexible for the year, Deep Archive for the long haul, delete after five."
SOA-C02 Cost and Performance Optimization Practice Question
This SOA-C02 practice question tests your understanding of cost and performance optimization. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 stores application log files in an Amazon S3 bucket. The logs are accessed frequently for the first 30 days, then rarely accessed but must be retrievable within 12 hours. After 1 year, the logs must be archived for compliance with a retention period of 5 years, during which retrievals are expected to be extremely rare (one or two per year) and retrieval time of 12 hours is acceptable. The SysOps administrator wants to minimize storage costs. Which S3 lifecycle policy configuration should be used?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"first"Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
After 30 days, transition to S3 Glacier Flexible Retrieval; after 365 days, transition to S3 Glacier Deep Archive; delete after 5 years.
Option B is correct because it uses S3 Glacier Flexible Retrieval for the first year after the initial 30 days, which meets the 12-hour retrieval requirement at lower cost than S3 Standard-IA, then transitions to S3 Glacier Deep Archive for the remaining 4 years to minimize storage costs for extremely rare retrievals. The lifecycle policy transitions objects after 30 days to S3 Glacier Flexible Retrieval (retrieval time minutes to 12 hours), then after 365 days to S3 Glacier Deep Archive (retrieval time 12 hours), and deletes after 5 years, aligning with the access patterns and compliance retention.
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.
- ✗
After 30 days, transition to S3 Standard-IA; after 365 days, transition to S3 Glacier Deep Archive; delete after 5 years.
Why it's wrong here
S3 Standard-IA is more expensive than Glacier Flexible Retrieval for data that is rarely accessed. Using Glacier Flexible Retrieval for the middle tier would be more cost-effective given the rare access pattern after 30 days.
- ✓
After 30 days, transition to S3 Glacier Flexible Retrieval; after 365 days, transition to S3 Glacier Deep Archive; delete after 5 years.
Why this is correct
This lifecycle provides cost-optimized storage: S3 Standard for the first 30 days (frequent access), S3 Glacier Flexible Retrieval for the next 335 days (rare access, 12-hour retrieval acceptable), and S3 Glacier Deep Archive for the final 4+ years (extremely rare access, lowest cost). This minimizes overall costs while meeting retrieval requirements.
Clue confirmation
The clue words "first", "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
After 30 days, transition to S3 Glacier Flexible Retrieval; delete after 5 years.
Why it's wrong here
This lifecycle lacks the transition to S3 Glacier Deep Archive after 1 year. Since the data is extremely rarely accessed after 1 year, storing it in Glacier Flexible Retrieval is more expensive than Glacier Deep Archive.
- ✗
After 30 days, transition to S3 Glacier Deep Archive; delete after 5 years.
Why it's wrong here
Transitioning directly to S3 Glacier Deep Archive after 30 days disregards the fact that data is accessed rarely but still occasionally (within 12 hours) for the first year. Glacier Deep Archive has lower storage cost but higher retrieval costs, and for data that may be accessed a few times a year, Glacier Flexible Retrieval is more cost-effective overall.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose S3 Standard-IA (Option A) because it seems logical for infrequent access, failing to recognize that S3 Glacier Flexible Retrieval provides lower storage costs for data that is rarely accessed but still needs retrieval within 12 hours, and that a multi-tier lifecycle (Option B) is more cost-effective than a single transition.
Detailed technical explanation
How to think about this question
S3 Glacier Deep Archive has a retrieval time of 12 hours (standard) and is the lowest-cost storage class, but it incurs a minimum storage duration charge of 180 days and a per-GB retrieval fee, making it unsuitable for data accessed more than once or twice per year. S3 Glacier Flexible Retrieval (formerly S3 Glacier) offers expedited, standard, and bulk retrievals with standard retrieval taking 3-5 hours, fitting the 12-hour requirement while costing more than Deep Archive but less than Standard-IA for long-term storage. The lifecycle transition timing must also consider the 30-day minimum for S3 Standard-IA and the 30-day minimum before transitioning from S3 Standard to any lower-cost class.
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 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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
Cost and Performance Optimization — This question tests Cost and Performance Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: After 30 days, transition to S3 Glacier Flexible Retrieval; after 365 days, transition to S3 Glacier Deep Archive; delete after 5 years. — Option B is correct because it uses S3 Glacier Flexible Retrieval for the first year after the initial 30 days, which meets the 12-hour retrieval requirement at lower cost than S3 Standard-IA, then transitions to S3 Glacier Deep Archive for the remaining 4 years to minimize storage costs for extremely rare retrievals. The lifecycle policy transitions objects after 30 days to S3 Glacier Flexible Retrieval (retrieval time minutes to 12 hours), then after 365 days to S3 Glacier Deep Archive (retrieval time 12 hours), and deletes after 5 years, aligning with the access patterns and compliance retention.
What should I do if I get this SOA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "first", "minimum / minimize". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Same concept, more angles
1 more ways this is tested on SOA-C02
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 company stores application logs in Amazon S3. The logs are rarely accessed after the first 30 days, but must be retained for 7 years for compliance. The SysOps administrator wants to minimize storage costs while ensuring logs are available for retrieval within 12 hours if needed. Which S3 lifecycle configuration is the most cost-effective?
medium- ✓ A.S3 Standard for 30 days, then transition to S3 Glacier Deep Archive
- B.S3 Standard for 30 days, then transition to S3 Glacier (Flexible Retrieval)
- C.Use S3 Intelligent-Tiering from the start
- D.S3 Standard for 30 days, then transition to S3 One Zone-IA
Why A: Option A is correct because it transitions logs from S3 Standard (for frequent access during the first 30 days) to S3 Glacier Deep Archive, which offers the lowest storage cost for long-term retention. Since logs must be retained for 7 years and only need retrieval within 12 hours, Glacier Deep Archive's 12-hour standard retrieval time meets the requirement while minimizing costs.
Last reviewed: Jun 11, 2026
This SOA-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 SOA-C02 exam.
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