- A
S3 Standard
Why wrong: S3 Standard is designed for frequently accessed data and provides low latency and high throughput. However, it has the highest storage cost among these options, making it unnecessarily expensive for data accessed only once a month.
- B
S3 Intelligent-Tiering
Why wrong: S3 Intelligent-Tiering automatically moves objects between access tiers based on changing access patterns. While it can cost-effectively handle unpredictable access, it charges a monthly monitoring fee. For a known, monthly access pattern, S3 Standard-IA would be more cost-effective.
- C
S3 Standard-IA (Infrequent Access)
S3 Standard-IA is optimized for infrequently accessed data that requires millisecond retrieval. It offers lower storage costs than S3 Standard, with a retrieval fee. This matches the scenario: monthly access with seconds retrieval latency and lowest cost.
- D
S3 Glacier Deep Archive
Why wrong: S3 Glacier Deep Archive provides the lowest storage cost but has retrieval times of 12 to 48 hours. This does not meet the requirement that data be available within seconds when accessed.
Quick Answer
S3 Standard-IA (Infrequent Access) is the correct choice because it provides the same milliseconds retrieval as S3 Standard while significantly reducing storage costs for data accessed less than once a month. The key technical concept here is that S3 Standard-IA decouples storage pricing from retrieval performance—you pay a lower per-GB storage fee but incur a retrieval charge per object accessed, making it ideal for the described scenario where data must be available within seconds but is rarely needed. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your ability to match storage classes to access patterns, with a common trap being S3 One Zone-IA (which also offers low cost but lacks the multi-AZ durability required for critical historical data) or S3 Glacier (which has a minutes-to-hours retrieval delay). Remember the memory tip: "Standard-IA: Same speed, lower storage price—perfect for the once-a-month report."
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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 stores historical sales data in Amazon S3. The data is accessed only once a month for generating quarterly reports. When accessed, the data must be available for retrieval within seconds. The company wants to minimize storage costs while meeting the retrieval latency requirement. Which S3 storage class 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:
"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
S3 Standard-IA (Infrequent Access)
S3 Standard-IA (Infrequent Access) is the correct choice because it offers the same low-latency retrieval (milliseconds) as S3 Standard but at a lower storage cost, making it ideal for data accessed infrequently (e.g., once a month) yet requiring immediate availability. The company's requirement of 'within seconds' is fully met by S3 Standard-IA, which provides the same first-byte latency as S3 Standard, while minimizing storage costs for data that is not accessed frequently.
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.
- ✗
S3 Standard
Why it's wrong here
S3 Standard is designed for frequently accessed data and provides low latency and high throughput. However, it has the highest storage cost among these options, making it unnecessarily expensive for data accessed only once a month.
- ✗
S3 Intelligent-Tiering
Why it's wrong here
S3 Intelligent-Tiering automatically moves objects between access tiers based on changing access patterns. While it can cost-effectively handle unpredictable access, it charges a monthly monitoring fee. For a known, monthly access pattern, S3 Standard-IA would be more cost-effective.
- ✓
S3 Standard-IA (Infrequent Access)
Why this is correct
S3 Standard-IA is optimized for infrequently accessed data that requires millisecond retrieval. It offers lower storage costs than S3 Standard, with a retrieval fee. This matches the scenario: monthly access with seconds retrieval latency and lowest cost.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
S3 Glacier Deep Archive
Why it's wrong here
S3 Glacier Deep Archive provides the lowest storage cost but has retrieval times of 12 to 48 hours. This does not meet the requirement that data be available within seconds when accessed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'infrequent access' with 'archival access' and incorrectly choose S3 Glacier Deep Archive, overlooking the critical retrieval latency requirement of 'within seconds' that only S3 Standard-IA (or S3 Standard) can meet.
Detailed technical explanation
How to think about this question
S3 Standard-IA stores data on the same high-durability, low-latency infrastructure as S3 Standard but with a per-GB retrieval fee to offset the lower storage cost. This trade-off makes it ideal for data that is accessed infrequently but requires immediate access, such as quarterly reporting data. A real-world scenario is a company that archives monthly sales data for compliance audits; using S3 Standard-IA reduces storage costs by ~50% compared to S3 Standard while still allowing instant retrieval when auditors request the data.
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.
- →
Cloud Technology and Services — study guide chapter
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: S3 Standard-IA (Infrequent Access) — S3 Standard-IA (Infrequent Access) is the correct choice because it offers the same low-latency retrieval (milliseconds) as S3 Standard but at a lower storage cost, making it ideal for data accessed infrequently (e.g., once a month) yet requiring immediate availability. The company's requirement of 'within seconds' is fully met by S3 Standard-IA, which provides the same first-byte latency as S3 Standard, while minimizing storage costs for data that is not accessed frequently.
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: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jun 11, 2026
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.
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