DEA-C01 Data Store Management Practice Question
A data engineer is setting up an Amazon S3 lifecycle policy to transition objects to S3 Glacier after 90 days and delete after 365 days. The objects are stored in the S3 Standard storage class. Which lifecycle rule configuration meets the requirements?
⚠ Common exam trap
Watch out — candidates often confuse 'expire' with 'transition' or think that setting both actions to the same number of days is valid, but AWS requires expiration to be after transition to avoid immediate deletion.
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 Glacier after 90 days and expire after 365 days
It specifies a transition action to S3 Glacier after 90 days and a separate expiration action after 365 days, which directly matches the requirements. S3 lifecycle policies allow independent transition and expiration actions, and the expiration action must be set to a value greater than the transition action to keep objects accessible in Glacier until deletion.
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 Glacier after 90 days and expire after 90 days
Why it's wrong here
Expiration after 90 days deletes objects prematurely.
- ✗
Transition to Glacier after 90 days and expire after 90 days
Why it's wrong here
Duplicate option.
- ✗
Transition to Glacier after 365 days and expire after 365 days
Why it's wrong here
Transition after 365 days negates cost savings.
- ✓
Transition to Glacier after 90 days and expire after 365 days
Why this is correct
Correct timing for transition and deletion.
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 |
Go deeper
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.