The answer is to create a lifecycle policy that transitions objects to S3 Glacier Instant Retrieval after 30 days. This is the correct choice because it directly addresses S3 lifecycle policy cost optimization by moving infrequently accessed log files to a lower-cost storage tier while preserving millisecond retrieval times, ensuring that the single access after 30 days remains fast and cost-effective. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this scenario tests your understanding of balancing storage cost against retrieval latency and fees; a common trap is choosing S3 Standard-IA, which incurs per-GB retrieval charges that can spike costs for one-time access, or S3 Glacier Deep Archive, which has hours-long retrieval times that violate the “without affecting data retrieval” constraint. Remember the memory tip: “Instant for instant access, IA for infrequent but repeated reads” — if logs are touched only once, pick Instant Retrieval to avoid surprise retrieval fees.
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 SysOps administrator notices that an S3 bucket's storage costs have increased significantly. The bucket stores log files and is configured with S3 Standard storage class. Most logs are accessed only once after 30 days. Which action will reduce costs without affecting data retrieval?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a lifecycle policy to transition objects to S3 Glacier Instant Retrieval after 30 days.
Option C is correct because transitioning to S3 Glacier Instant Retrieval after 30 days reduces storage cost while maintaining millisecond access. Option A is wrong because S3 Standard-IA has retrieval fees that might increase cost for single access. Option B is wrong because S3 One Zone-IA is cheaper but less durable. Option D is wrong because S3 Glacier Deep Archive has long retrieval times.
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.
✗
Create a lifecycle policy to transition objects to S3 Standard-IA after 30 days.
Why it's wrong here
Standard-IA has retrieval charges that could negate savings for one-time access.
✗
Create a lifecycle policy to transition objects to S3 Glacier Deep Archive after 30 days.
Why it's wrong here
Deep Archive has long retrieval times (hours) and is not suitable for one-time access.
✓
Create a lifecycle policy to transition objects to S3 Glacier Instant Retrieval after 30 days.
Why this is correct
Glacier Instant Retrieval has lower storage cost and millisecond retrieval for one-time access.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a lifecycle policy to transition objects to S3 One Zone-IA after 30 days.
Why it's wrong here
One Zone-IA offers lower cost but reduced durability.
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.
What to study next
Got this wrong? Here's your next step.
Identify which SOA-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.
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: Create a lifecycle policy to transition objects to S3 Glacier Instant Retrieval after 30 days. — Option C is correct because transitioning to S3 Glacier Instant Retrieval after 30 days reduces storage cost while maintaining millisecond access. Option A is wrong because S3 Standard-IA has retrieval fees that might increase cost for single access. Option B is wrong because S3 One Zone-IA is cheaper but less durable. Option D is wrong because S3 Glacier Deep Archive has long retrieval times.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-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 →
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 SysOps administrator is reviewing cost reports and notices that costs for Amazon S3 have increased significantly. The bucket stores log files that are accessed once a month for auditing. The logs are written daily, and each object is about 10 MB. The company needs to keep logs for 7 years. Which action will optimize costs while meeting retention requirements?
hard
✓ A.Use an S3 Lifecycle policy to transition objects to S3 Glacier Deep Archive after 30 days and expire after 7 years.
B.Store the logs in an Amazon EBS volume.
C.Transition the logs to S3 Glacier Flexible Retrieval after 30 days.
D.Store the logs in S3 Standard and delete after 7 years.
Why A: Option D is correct because S3 Lifecycle policies can automate transitioning objects to lower-cost storage classes (e.g., S3 Glacier Deep Archive) after the initial access period, and then expire them after 7 years. This minimizes storage costs. Option A is wrong because S3 Standard is the most expensive storage class and is not cost-optimal for rarely accessed logs. Option B is wrong because storing logs in a single volume on EBS is not durable and does not provide the same cost savings as S3 lifecycle. Option C is wrong because even S3 Glacier Flexible Retrieval is more expensive than S3 Glacier Deep Archive for long-term archival.
Last reviewed: Jun 20, 2026
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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.
Question Discussion
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