- A
S3 Lifecycle policy
Correct. An S3 Lifecycle policy can automatically transition objects to cheaper storage classes (e.g., from S3 Standard to S3 Glacier Deep Archive) based on the object's age, meeting the cost-optimization and compliance requirements without manual intervention.
- B
S3 Object Lock
Why wrong: Incorrect. S3 Object Lock prevents objects from being deleted or overwritten for a fixed retention period, but it does not automatically transition objects between storage classes to reduce costs.
- C
S3 Replication
Why wrong: Incorrect. S3 Replication copies objects to another bucket (often in a different AWS Region) for redundancy or compliance, but it does not automatically move objects to lower-cost storage classes within the same bucket.
- D
S3 Transfer Acceleration
Why wrong: Incorrect. S3 Transfer Acceleration speeds up uploads to S3 over long distances by using AWS edge locations, but it has no role in managing storage costs or lifecycle transitions.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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 company ingests sensor data from IoT devices into an Amazon S3 bucket. The data is accessed frequently for the first 30 days, but after that, it is rarely queried. The company’s compliance policy requires all data to be retained for 7 years. The company wants to minimize storage costs by automatically moving data to more cost-effective storage classes as it ages, without any manual intervention. Which Amazon S3 feature should the company configure to meet these requirements?
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.
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 Lifecycle policy
An S3 Lifecycle policy automates the transition of objects between storage classes based on age. By configuring a lifecycle rule to move objects to S3 Standard-IA or S3 One Zone-IA after 30 days, and then to S3 Glacier Deep Archive after a longer period, the company can meet the 7-year retention requirement while minimizing costs without manual intervention.
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 Lifecycle policy
Why this is correct
Correct. An S3 Lifecycle policy can automatically transition objects to cheaper storage classes (e.g., from S3 Standard to S3 Glacier Deep Archive) based on the object's age, meeting the cost-optimization and compliance requirements without manual intervention.
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.
- ✗
S3 Object Lock
Why it's wrong here
Incorrect. S3 Object Lock prevents objects from being deleted or overwritten for a fixed retention period, but it does not automatically transition objects between storage classes to reduce costs.
- ✗
S3 Replication
Why it's wrong here
Incorrect. S3 Replication copies objects to another bucket (often in a different AWS Region) for redundancy or compliance, but it does not automatically move objects to lower-cost storage classes within the same bucket.
- ✗
S3 Transfer Acceleration
Why it's wrong here
Incorrect. S3 Transfer Acceleration speeds up uploads to S3 over long distances by using AWS edge locations, but it has no role in managing storage costs or lifecycle transitions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse S3 Object Lock (which only enforces retention, not cost-efficient transitions) with lifecycle policies, or think S3 Replication can change storage classes, but replication only copies objects and does not alter the source's storage class over time.
Detailed technical explanation
How to think about this question
S3 Lifecycle policies support both transition actions (e.g., to S3 Standard-IA after 30 days) and expiration actions (e.g., delete after 7 years). The transitions are applied asynchronously, typically within 24 hours of the object's age meeting the rule condition. A common real-world scenario is a data lake where raw IoT data is hot for 30 days, then moved to cold storage for compliance, with lifecycle rules handling the entire workflow automatically.
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?
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 Lifecycle policy — An S3 Lifecycle policy automates the transition of objects between storage classes based on age. By configuring a lifecycle rule to move objects to S3 Standard-IA or S3 One Zone-IA after 30 days, and then to S3 Glacier Deep Archive after a longer period, the company can meet the 7-year retention requirement while minimizing costs without manual intervention.
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.
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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