- A
S3 One Zone-IA
Why wrong: S3 One Zone-IA stores data in a single Availability Zone, reducing availability. For frequently accessed thumbnails that need high availability, this is inappropriate.
- B
S3 Glacier Flexible Retrieval
Why wrong: S3 Glacier Flexible Retrieval has retrieval times of minutes to hours. Thumbnails that are accessed multiple times per day need immediate access, making Glacier unsuitable.
- C
S3 Standard
S3 Standard is designed for frequently accessed data with high durability across three AZs and high availability. It provides immediate access with low latency — perfect for frequently read video thumbnails.
- D
S3 Standard-IA
Why wrong: S3 Standard-IA is for infrequently accessed data. Using it for data accessed multiple times per day incurs retrieval charges that would make it more expensive than S3 Standard.
Quick Answer
The answer is S3 Standard. This storage class is the correct choice because it is explicitly designed for frequently accessed data, offering 99.999999999% durability and 99.99% availability through automatic replication across a minimum of three Availability Zones, ensuring both high availability and low-latency retrieval for workloads like video thumbnails read multiple times daily. 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 to confuse S3 Standard with S3 Intelligent-Tiering or S3 Standard-IA; remember that Intelligent-Tiering is for unpredictable access, while Standard-IA adds retrieval costs and a minimum storage duration penalty. A useful memory tip is to think of “Standard” as the default, always-on class for active data—if your data is read every day, keep it in Standard.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. 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 media company stores frequently accessed video thumbnails in Amazon S3. The thumbnails are read multiple times every day and must be highly available and durable. Which S3 storage class is most appropriate for this workload?
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
S3 Standard is the most appropriate storage class because it offers high durability (99.999999999%) and high availability (99.99%) with low-latency access, making it ideal for frequently accessed, critical data like video thumbnails that are read multiple times daily. It provides automatic replication across a minimum of three Availability Zones, ensuring both high availability and durability without retrieval fees or minimum storage duration penalties.
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 One Zone-IA
Why it's wrong here
S3 One Zone-IA stores data in a single Availability Zone, reducing availability. For frequently accessed thumbnails that need high availability, this is inappropriate.
- ✗
S3 Glacier Flexible Retrieval
Why it's wrong here
S3 Glacier Flexible Retrieval has retrieval times of minutes to hours. Thumbnails that are accessed multiple times per day need immediate access, making Glacier unsuitable.
- ✓
S3 Standard
Why this is correct
S3 Standard is designed for frequently accessed data with high durability across three AZs and high availability. It provides immediate access with low latency — perfect for frequently read video thumbnails.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
S3 Standard-IA
Why it's wrong here
S3 Standard-IA is for infrequently accessed data. Using it for data accessed multiple times per day incurs retrieval charges that would make it more expensive than S3 Standard.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often choose S3 Standard-IA thinking it saves costs for any infrequently accessed data, but they overlook the per-GB retrieval fee and minimum storage duration that make it more expensive than S3 Standard for data read multiple times daily.
Detailed technical explanation
How to think about this question
S3 Standard automatically replicates objects across at least three geographically distinct Availability Zones within an AWS Region, providing 99.99% availability and 99.999999999% durability. For workloads with frequent reads, S3 Standard avoids the per-GB retrieval fees that S3 Standard-IA and S3 One Zone-IA charge, which can significantly increase costs for high-read patterns. Additionally, S3 Standard has no minimum storage duration, so objects can be deleted or overwritten at any time without penalty.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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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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 — S3 Standard is the most appropriate storage class because it offers high durability (99.999999999%) and high availability (99.99%) with low-latency access, making it ideal for frequently accessed, critical data like video thumbnails that are read multiple times daily. It provides automatic replication across a minimum of three Availability Zones, ensuring both high availability and durability without retrieval fees or minimum storage duration penalties.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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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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