← CLF-C02·Amazon Web Services

Question 586 of 1,024

Billing, Pricing, and Support →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is to use S3 Standard for the first 30 days, then transition to S3 Glacier Flexible Retrieval. This combination is correct because it directly addresses the two-phase access pattern: S3 Standard provides the low-latency, frequent access needed initially, while a lifecycle policy automatically moves the data to Glacier Flexible Retrieval after 30 days, which offers retrieval times of 1 to 5 minutes—perfectly meeting the 5-minute retrieval requirement—at a significantly lower storage cost. On the AWS Certified Cloud Practitioner CLF-C02 exam, this scenario tests your understanding of S3 storage class lifecycle policies and the trade-off between retrieval speed and cost. A common trap is choosing S3 Glacier Deep Archive, which is cheaper but has retrieval times of 12 hours or more, failing the 5-minute requirement. Remember the memory tip: “Standard for the sprint, Flexible for the savings”—use Standard while data is hot, then let lifecycle rules flex it into Glacier for cold, cost-effective storage.

CLF-C02 Billing, Pricing, and Support Practice Question

This CLF-C02 practice question tests your understanding of billing, pricing, and support. 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 archives historical transaction records in Amazon S3. The records are accessed frequently for the first 30 days after creation. After 30 days, access drops sharply to only a few times per year, but the company must be able to retrieve any record within 5 minutes if needed. The company wants to minimize storage costs while meeting the retrieval time requirement. Which combination of S3 storage classes should the company use?

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.

Question 1mediummultiple choice

Read the full NAT/PAT explanation →

A
Use S3 Standard for all data.
Why wrong: S3 Standard is designed for frequently accessed data and has a higher storage cost. Using it for data that is rarely accessed after 30 days would not minimize storage costs, so this is not optimal.
B
Use S3 Standard for the first 30 days, then transition to S3 Glacier Flexible Retrieval.
S3 Standard provides low-latency access for the initial frequent access period. After 30 days, transitioning to S3 Glacier Flexible Retrieval reduces storage costs significantly. Although standard retrieval from S3 Glacier Flexible Retrieval takes hours, the company can use expedited retrieval (available as an optional feature) to meet the 5-minute requirement when needed, at an additional cost.
C
Use S3 Standard-IA for the first 30 days, then transition to S3 Glacier Deep Archive.
Why wrong: S3 Standard-IA is optimized for infrequently accessed data but still has a per-retrieval fee. While the transition to S3 Glacier Deep Archive offers very low storage cost, its retrieval time is typically 12 hours or more, which does not meet the 5-minute requirement.
D
Use S3 One Zone-IA for the first 30 days, then transition to S3 Glacier Deep Archive.
Why wrong: S3 One Zone-IA stores data in a single Availability Zone, which poses a risk of data loss if that zone fails. Additionally, S3 Glacier Deep Archive's retrieval time exceeds 5 minutes, making this combination unsuitable for the stated requirements.

Full breakdown with real-world context →

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 Standard for the first 30 days, then transition to S3 Glacier Flexible Retrieval.

Option B is correct because S3 Standard provides low-latency access for the first 30 days when records are frequently accessed, and then lifecycle rules transition the data to S3 Glacier Flexible Retrieval, which offers retrieval times of minutes (typically 1–5 minutes for expedited retrievals) at a much lower storage cost. This combination meets the 5-minute retrieval requirement while minimizing costs for data that is rarely accessed after 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 Standard for all data.
Why it's wrong here
S3 Standard is designed for frequently accessed data and has a higher storage cost. Using it for data that is rarely accessed after 30 days would not minimize storage costs, so this is not optimal.
✓
Use S3 Standard for the first 30 days, then transition to S3 Glacier Flexible Retrieval.
Why this is correct
S3 Standard provides low-latency access for the initial frequent access period. After 30 days, transitioning to S3 Glacier Flexible Retrieval reduces storage costs significantly. Although standard retrieval from S3 Glacier Flexible Retrieval takes hours, the company can use expedited retrieval (available as an optional feature) to meet the 5-minute requirement when needed, at an additional cost.
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.
✗
Use S3 Standard-IA for the first 30 days, then transition to S3 Glacier Deep Archive.
Why it's wrong here
S3 Standard-IA is optimized for infrequently accessed data but still has a per-retrieval fee. While the transition to S3 Glacier Deep Archive offers very low storage cost, its retrieval time is typically 12 hours or more, which does not meet the 5-minute requirement.
✗
Use S3 One Zone-IA for the first 30 days, then transition to S3 Glacier Deep Archive.
Why it's wrong here
S3 One Zone-IA stores data in a single Availability Zone, which poses a risk of data loss if that zone fails. Additionally, S3 Glacier Deep Archive's retrieval time exceeds 5 minutes, making this combination unsuitable for the stated requirements.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may confuse S3 Glacier Deep Archive's retrieval time (12–48 hours) with S3 Glacier Flexible Retrieval's faster expedited retrieval (1–5 minutes), leading them to incorrectly choose a cheaper but non-compliant storage class.

Detailed technical explanation

How to think about this question

S3 Glacier Flexible Retrieval supports expedited retrievals that typically complete within 1–5 minutes, aligning with the 5-minute requirement, while S3 Glacier Deep Archive's standard retrieval takes 12–48 hours and even expedited retrievals take 1–5 minutes but with higher cost and are not guaranteed for all objects. Lifecycle policies in S3 allow automatic transition of objects between storage classes based on age, and the 30-day minimum for transitions from S3 Standard to S3 Glacier Flexible Retrieval is satisfied by the access pattern described. A real-world scenario is a financial institution that must retain transaction records for compliance but only needs rapid access for audits or disputes within a narrow window.

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.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this CLF-C02 question test?

Billing, Pricing, and Support — This question tests Billing, Pricing, and Support — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use S3 Standard for the first 30 days, then transition to S3 Glacier Flexible Retrieval. — Option B is correct because S3 Standard provides low-latency access for the first 30 days when records are frequently accessed, and then lifecycle rules transition the data to S3 Glacier Flexible Retrieval, which offers retrieval times of minutes (typically 1–5 minutes for expedited retrievals) at a much lower storage cost. This combination meets the 5-minute retrieval requirement while minimizing costs for data that is rarely accessed after 30 days.

What should I do if I get this CLF-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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This CLF-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 CLF-C02 exam.