This DEA-C01 practice question tests your understanding of data store management. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 has an Amazon S3 bucket with versioning enabled. They want to automatically delete noncurrent versions of objects after 30 days. Which lifecycle rule action should be used?
Expiration
Why wrong: Expiration deletes current versions, not noncurrent.
NoncurrentVersionExpiration
This action deletes noncurrent versions after a specified number of days.
NoncurrentVersionTransition
Why wrong: This transitions noncurrent versions to another storage class, does not delete.
AbortIncompleteMultipartUpload
Why wrong: This aborts incomplete multipart uploads.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
NoncurrentVersionExpiration
The NoncurrentVersionExpiration lifecycle action is specifically designed to remove noncurrent object versions after a specified number of days. Since versioning is enabled and the requirement is to delete noncurrent versions after 30 days, this action directly meets the goal without affecting current versions or other lifecycle aspects.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Expiration
Why it's wrong here
Expiration deletes current versions, not noncurrent.
NoncurrentVersionExpiration
Why this is correct
This action deletes noncurrent versions after a specified number of days.
Related concept
Read the scenario before looking for a memorised answer.
NoncurrentVersionTransition
Why it's wrong here
This transitions noncurrent versions to another storage class, does not delete.
AbortIncompleteMultipartUpload
Why it's wrong here
This aborts incomplete multipart uploads.
Common exam traps
The trap here is confusing NoncurrentVersionExpiration with Expiration, as candidates often mistakenly apply the standard Expiration action to delete old versions, not realizing it only affects the current version.
Detailed technical explanation
Under the hood, S3 lifecycle policies evaluate noncurrent versions based on the 'NoncurrentDays' parameter, which counts from the time a version becomes noncurrent (i.e., when a newer version is uploaded). A real-world scenario: if objects are frequently updated, noncurrent versions can accumulate quickly, and using NoncurrentVersionExpiration with a 30-day rule ensures storage costs are controlled without manual cleanup. Note that this action does not delete delete markers—those require a separate Expiration rule with 'ExpiredObjectDeleteMarker' set to true.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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FAQ
Data Store Management — This question tests Data Store Management — Read the scenario before looking for a memorised answer..
The correct answer is: NoncurrentVersionExpiration — The NoncurrentVersionExpiration lifecycle action is specifically designed to remove noncurrent object versions after a specified number of days. Since versioning is enabled and the requirement is to delete noncurrent versions after 30 days, this action directly meets the goal without affecting current versions or other lifecycle aspects.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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