Question 1easymultiple choice
Full question →easymultiple choiceObjective-mapped
A company collects sensor data from IoT devices and stores the data in Amazon S3. For the first 90 days, the data is accessed frequently for real-time analysis. After 90 days, the data is rarely accessed but must be retrievable within 24 hours for compliance audits. After 365 days, the data must be retained for legal purposes but can be deleted after 7 years. Which S3 storage class should the company use for the data from day 91 to day 365 to minimize storage costs while meeting the retrieval time requirement?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Amazon S3 Standard
S3 Standard is designed for frequently accessed data and has a higher storage cost than S3 Standard-IA. Using it for data that is rarely accessed would increase costs unnecessarily.
B
Distractor review
Amazon S3 Glacier Flexible Retrieval
S3 Glacier Flexible Retrieval is for archival data with retrieval times from minutes to hours. While it might meet the 24-hour requirement, it is not optimized for data that may need rapid access occasionally, and its retrieval cost structure is different. S3 Standard-IA is a better fit because it offers millisecond retrieval for infrequently accessed data at a lower storage cost than Standard.
C
Best answer
Amazon S3 Standard-Infrequent Access (S3 Standard-IA)
S3 Standard-IA is ideal for data that is accessed less frequently but requires rapid access when needed. It provides the same low-latency retrieval as S3 Standard at a lower storage cost, perfectly matching the requirement of retrievability within 24 hours while minimizing cost.
D
Distractor review
Amazon S3 One Zone-Infrequent Access (S3 One Zone-IA)
S3 One Zone-IA stores data in a single Availability Zone, which means it is less durable and resilient. For compliance data that must be retained for years, durability across multiple AZs is important. Therefore, S3 Standard-IA is a more appropriate choice.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
A solutions architect is planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Amazon S3 Standard-Infrequent Access (S3 Standard-IA) — Amazon S3 Standard-Infrequent Access (S3 Standard-IA) is designed for data that is accessed less frequently but requires rapid access when needed. It offers the same low latency and high throughput as S3 Standard but at a lower storage cost. The retrieval time is within milliseconds, which easily meets the 'within 24 hours' requirement. S3 Glacier Flexible Retrieval has retrieval times ranging from minutes to hours and is more cost-effective for archival data, but it is intended for data that is accessed very rarely and where retrieval time flexibility is acceptable. S3 Standard is more expensive and optimized for frequent access. S3 One Zone-IA is less durable (stores data in a single Availability Zone) and is not recommended for data that must be retained for compliance without resilience.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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