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Data Store Management →easyMultiple ChoiceObjective-mapped

DEA-C01 Data Store Management Practice Question

This DEA-C01 practice question tests your understanding of data store management. 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 wants to store historical financial data for 7 years with immediate access for the first year and then infrequent access. After 7 years, the data must be automatically deleted. Which S3 lifecycle policy should be configured?

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
Transition to S3 Standard-IA after 30 days, expire after 2555 days
Why wrong: Standard-IA is for infrequent access but not optimal for 7 years.
B
Transition to S3 Glacier Flexible Retrieval after 365 days, expire after 2555 days
Why wrong: Glacier Flexible is more expensive than Deep Archive for long-term archival.
C
Transition to S3 One Zone-IA after 90 days, expire after 365 days
Why wrong: Expires after 1 year, not 7 years.
D
Transition to S3 Glacier Deep Archive after 365 days, expire after 2555 days
This is cost-effective: immediate access for 1 year, then low-cost storage, delete after 7 years.

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

✓

Transition to S3 Glacier Deep Archive after 365 days, expire after 2555 days

Option D is correct because it meets all requirements: immediate access for the first year (no transition before 365 days), then transition to S3 Glacier Deep Archive for infrequent access and cost savings, with automatic deletion after 7 years (2555 days). S3 Glacier Deep Archive is the most cost-effective storage class for long-term archival data that is rarely accessed, and the 2555-day expiration ensures compliance with the 7-year retention policy.

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.

✗
Transition to S3 Standard-IA after 30 days, expire after 2555 days
Why it's wrong here
Standard-IA is for infrequent access but not optimal for 7 years.
✗
Transition to S3 Glacier Flexible Retrieval after 365 days, expire after 2555 days
Why it's wrong here
Glacier Flexible is more expensive than Deep Archive for long-term archival.
✗
Transition to S3 One Zone-IA after 90 days, expire after 365 days
Why it's wrong here
Expires after 1 year, not 7 years.
✓
Transition to S3 Glacier Deep Archive after 365 days, expire after 2555 days
Why this is correct
This is cost-effective: immediate access for 1 year, then low-cost storage, delete after 7 years.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap is that candidates may think Option B is correct because it transitions to Glacier Flexible Retrieval after 365 days and expires after 2555 days, but this option provides immediate access for only the first year? Actually, Standard-IA (Option A) and One Zone-IA (Option C) are not suitable for long-term archival. Option D is correct because Glacier Deep Archive offers the lowest cost for infrequent access after year one, with deletion after 7 years. The key mistake is choosing a storage class that is too expensive or not durable enough for the full 7-year retention.

Detailed technical explanation

How to think about this question

S3 Lifecycle policies use 'Transition' actions to move objects between storage classes and 'Expiration' actions to delete objects. The 'Days' parameter is calculated from the object's creation date. S3 Glacier Deep Archive has a retrieval time of 12-48 hours, which aligns with 'infrequent access' after the first year. The 2555-day expiration is exactly 7 years (365 days/year * 7), but note that leap years are not accounted for in S3 lifecycle calculations, so the actual deletion may occur slightly earlier or later depending on the object's creation date.

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.

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 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 DEA-C01 question test?

Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Transition to S3 Glacier Deep Archive after 365 days, expire after 2555 days — Option D is correct because it meets all requirements: immediate access for the first year (no transition before 365 days), then transition to S3 Glacier Deep Archive for infrequent access and cost savings, with automatic deletion after 7 years (2555 days). S3 Glacier Deep Archive is the most cost-effective storage class for long-term archival data that is rarely accessed, and the 2555-day expiration ensures compliance with the 7-year retention policy.

What should I do if I get this DEA-C01 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". 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 DEA-C01 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 DEA-C01 exam.