← CLF-C02·Amazon Web Services

Question 37 of 1,024

Cloud Technology and Services →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is S3 Lifecycle policies, which are the correct choice because they automate the transition of objects between storage classes based on age, directly aligning with the described access patterns. By configuring a lifecycle rule, you can move logs from S3 Standard to S3 Standard-IA after 30 days for infrequent access, then to S3 Glacier Instant Retrieval after 90 days for rare but rapid retrieval, and finally expire them after one year to meet compliance retention. On the AWS Certified Cloud Practitioner CLF-C02 exam, this scenario tests your understanding of S3 lifecycle policies for cost optimization, often appearing as a multi-step transition question where the trap is choosing a single storage class like S3 Glacier Deep Archive, which lacks the required minute-level retrieval. Remember the memory tip: “30-60-90” for the transition days, and think of lifecycle policies as your automated “move and delete” manager that saves money without manual intervention.

CLF-C02 Cloud Technology and Services Practice Question

This CLF-C02 practice question tests your understanding of cloud technology and services. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 generates large log files from its application and stores them in an Amazon S3 bucket. During the first 30 days, logs are frequently accessed for troubleshooting. After 30 days, logs are accessed infrequently (a few times per month). After 90 days, logs are rarely accessed but must be retained for compliance for one year, with retrieval possible within minutes if needed. The company wants to minimize storage costs while meeting these access and retention requirements. Which S3 feature should the company configure?

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

Full question →

A
S3 Object Lock
Why wrong: S3 Object Lock prevents objects from being deleted or overwritten for a fixed period. It is used for regulatory compliance, not for automatically moving objects to lower-cost storage classes based on age.
B
S3 Lifecycle policies
S3 Lifecycle policies automate the transition of objects to more cost-effective storage classes (e.g., from Standard to Standard-IA to Glacier Instant Retrieval) as data ages, directly meeting the cost optimization and retention requirements described.
C
S3 Transfer Acceleration
Why wrong: S3 Transfer Acceleration uses AWS edge locations to speed up uploads to S3. It does not manage storage class transitions and would not reduce ongoing storage costs.
D
S3 Replication
Why wrong: S3 Replication copies objects to another bucket, typically for redundancy or geographic distribution. It does not change the storage class of the original object and is not designed to optimize costs over time.

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

✓

S3 Lifecycle policies

B is correct because S3 Lifecycle policies allow you to define rules that automatically transition objects between storage classes (e.g., from S3 Standard to S3 Standard-IA after 30 days, then to S3 Glacier Instant Retrieval after 90 days) and expire them after one year. This directly matches the access patterns: frequent access for 30 days, infrequent access for the next 60 days, rare access with minute-level retrieval for the remainder of the year, and deletion after compliance retention is met.

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 Object Lock
Why it's wrong here
S3 Object Lock prevents objects from being deleted or overwritten for a fixed period. It is used for regulatory compliance, not for automatically moving objects to lower-cost storage classes based on age.
✓
S3 Lifecycle policies
Why this is correct
S3 Lifecycle policies automate the transition of objects to more cost-effective storage classes (e.g., from Standard to Standard-IA to Glacier Instant Retrieval) as data ages, directly meeting the cost optimization and retention requirements described.
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 Transfer Acceleration
Why it's wrong here
S3 Transfer Acceleration uses AWS edge locations to speed up uploads to S3. It does not manage storage class transitions and would not reduce ongoing storage costs.
✗
S3 Replication
Why it's wrong here
S3 Replication copies objects to another bucket, typically for redundancy or geographic distribution. It does not change the storage class of the original object and is not designed to optimize costs over time.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may confuse S3 Object Lock (a compliance feature) with lifecycle policies (a cost-optimization feature), or assume that S3 Transfer Acceleration is relevant to storage cost reduction, when it only addresses upload speed.

Detailed technical explanation

How to think about this question

S3 Lifecycle policies are evaluated daily and apply to objects based on their creation date or version. The transition to S3 Glacier Instant Retrieval after 90 days is key here because it offers millisecond retrieval times (suitable for 'within minutes' compliance needs) at a lower cost than S3 Standard-IA, while S3 Glacier Flexible Retrieval (minutes to hours) would not meet the 'within minutes' requirement. A common subtlety is that lifecycle transitions can only move objects to colder tiers, not back to warmer ones, so the policy must be designed with the access pattern in mind.

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 policies — B is correct because S3 Lifecycle policies allow you to define rules that automatically transition objects between storage classes (e.g., from S3 Standard to S3 Standard-IA after 30 days, then to S3 Glacier Instant Retrieval after 90 days) and expire them after one year. This directly matches the access patterns: frequent access for 30 days, infrequent access for the next 60 days, rare access with minute-level retrieval for the remainder of the year, and deletion after compliance retention is met.

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.