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Question 444 of 1,546

Cost and Performance Optimization →easyMultiple ChoiceObjective-mapped

SOA-C02 Cost and Performance Optimization Practice Question

This SOA-C02 practice question tests your understanding of cost and performance optimization. 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.

An application running on Amazon EC2 generates a large number of small files that are stored temporarily and deleted after 24 hours. The files are accessed frequently within the first hour and then rarely. Which Amazon S3 storage class is MOST cost-effective for this use case?

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.

A
S3 Glacier Deep Archive
Why wrong: Minimum 180-day storage duration; data deleted earlier incurs costs.
B
S3 Intelligent-Tiering
Automatically moves data between tiers based on access.
C
S3 One Zone-Infrequent Access
Why wrong: Less durable and not optimized for frequent initial access.
D
S3 Standard
Why wrong: Standard is expensive for data that becomes rarely accessed.

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 Intelligent-Tiering

The correct answer is S3 Intelligent-Tiering (Option B). This storage class automatically moves objects between a frequent access tier and an infrequent access tier based on changing access patterns, making it cost-effective for unpredictable or shifting access patterns. In this use case, files are accessed frequently in the first hour and then rarely, so Intelligent-Tiering will initially store them in the frequent access tier and then move them to the infrequent access tier after 30 days of no access, reducing costs. Option A (S3 Glacier Deep Archive) is unsuitable due to a 180-day minimum storage charge and retrieval times of hours, which does not match the 24-hour retention. Option C (S3 One Zone-Infrequent Access) is not ideal because it has a 30-day minimum storage charge and is designed for data accessed infrequently but with quick retrieval, not for a pattern that starts with frequent access. Option D (S3 Standard) would be unnecessarily expensive for the data after the first hour when it is rarely accessed.

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 Glacier Deep Archive
Why it's wrong here
Minimum 180-day storage duration; data deleted earlier incurs costs.
✓
S3 Intelligent-Tiering
Why this is correct
Automatically moves data between tiers based on access.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
S3 One Zone-Infrequent Access
Why it's wrong here
Less durable and not optimized for frequent initial access.
✗
S3 Standard
Why it's wrong here
Standard is expensive for data that becomes rarely accessed.

Common exam traps

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.

Detailed technical explanation

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.

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.

Quick reference

AWS S3 Storage Class Comparison

Storage Class	Min Duration	Retrieval	Use Case
S3 Standard	None	Immediate	Frequently accessed data
S3 Standard-IA	30 days	Immediate	Infrequent access, rapid retrieval
S3 One Zone-IA	30 days	Immediate	Non-critical infrequent data
S3 Intelligent-Tiering	None	Immediate–hours	Unknown or changing access patterns
S3 Glacier Instant	90 days	Milliseconds	Archive with instant retrieval
S3 Glacier Flexible	90 days	Minutes–hours	Archive, flexible retrieval
S3 Glacier Deep Archive	180 days	Hours	Long-term compliance archive

What to study next

Got this wrong? Here's your next step.

Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Cost and Performance Optimization — This question tests Cost and Performance Optimization — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: S3 Intelligent-Tiering — The correct answer is S3 Intelligent-Tiering (Option B). This storage class automatically moves objects between a frequent access tier and an infrequent access tier based on changing access patterns, making it cost-effective for unpredictable or shifting access patterns. In this use case, files are accessed frequently in the first hour and then rarely, so Intelligent-Tiering will initially store them in the frequent access tier and then move them to the infrequent access tier after 30 days of no access, reducing costs. Option A (S3 Glacier Deep Archive) is unsuitable due to a 180-day minimum storage charge and retrieval times of hours, which does not match the 24-hour retention. Option C (S3 One Zone-Infrequent Access) is not ideal because it has a 30-day minimum storage charge and is designed for data accessed infrequently but with quick retrieval, not for a pattern that starts with frequent access. Option D (S3 Standard) would be unnecessarily expensive for the data after the first hour when it is rarely accessed.

What should I do if I get this SOA-C02 question wrong?

Are there clue words in this question I should notice?

Yes — watch for: "first". 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 SOA-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 SOA-C02 exam.