- A
Enable an S3 lifecycle policy to transition objects to Glacier after 7 days without enabling versioning.
Why wrong: Lifecycle tiering supports storage cost management, not immediate recovery from deletes/overwrites.
- B
Enable S3 cross-Region replication (CRR) but leave the bucket without versioning enabled.
Why wrong: CRR generally requires versioning; without it, recovery from overwrites/deletes is not reliably supported.
- C
Enable S3 versioning and configure cross-Region replication to a bucket in another Region.
Versioning enables recovery from accidental overwrites/deletes, and CRR provides near-current copies for Region-level disaster recovery.
- D
Rely on frequent EBS snapshots of a temporary cache used during uploads.
Why wrong: EBS snapshots do not protect the source S3 objects and do not provide S3-level overwrite/delete recovery.
SAA-C03 Design Resilient Architectures Practice Question
This SAA-C03 practice question tests your understanding of design resilient architectures. 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. A key principle to apply: s3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object.. 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 media company stores original uploads in an S3 bucket. They must recover from accidental overwrites/deletes and also recover quickly from a full Region outage. The required RPO is about 1 hour. Which configuration best meets these requirements?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
Enable S3 versioning and configure cross-Region replication to a bucket in another Region.
Option C is correct because enabling S3 versioning protects against accidental overwrites and deletes by preserving all object versions, while cross-Region replication (CRR) asynchronously replicates objects to a bucket in another Region, enabling recovery from a full Region outage. With an RPO of about 1 hour, CRR meets this requirement as replication typically completes within minutes to a few hours, and versioning ensures point-in-time recovery of previous object states.
Key principle: S3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable an S3 lifecycle policy to transition objects to Glacier after 7 days without enabling versioning.
Why it's wrong here
Lifecycle tiering supports storage cost management, not immediate recovery from deletes/overwrites.
- ✗
Enable S3 cross-Region replication (CRR) but leave the bucket without versioning enabled.
Why it's wrong here
CRR generally requires versioning; without it, recovery from overwrites/deletes is not reliably supported.
- ✓
Enable S3 versioning and configure cross-Region replication to a bucket in another Region.
Why this is correct
Versioning enables recovery from accidental overwrites/deletes, and CRR provides near-current copies for Region-level disaster recovery.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
S3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object.
- ✗
Rely on frequent EBS snapshots of a temporary cache used during uploads.
Why it's wrong here
EBS snapshots do not protect the source S3 objects and do not provide S3-level overwrite/delete recovery.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume CRR alone is sufficient for data protection, overlooking that without versioning, overwrites and deletes are permanent and cannot be recovered, which directly violates the requirement to recover from accidental overwrites/deletes.
Detailed technical explanation
How to think about this question
S3 versioning works by assigning a unique version ID to each object upload; when an object is overwritten, a new version is created and the old version remains accessible. CRR uses S3's asynchronous replication engine, which replicates new objects and version updates to a destination bucket in another AWS Region, typically achieving replication within 15 minutes to a few hours depending on object size and network conditions. In a full Region outage scenario, you can fail over to the replicated bucket in the secondary Region, and versioning allows you to restore previous versions if accidental deletions or overwrites occurred before the outage.
KKey Concepts to Remember
- S3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object.
- S3 Cross-Region Replication (CRR) asynchronously copies objects to a bucket in a different AWS Region.
- CRR provides disaster recovery capabilities for Region-level outages with a low RPO.
- Versioning is generally a prerequisite for CRR to ensure all object changes are replicated.
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
S3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object.
Real-world example
How this comes up in practice
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.
What to study next
Got this wrong? Here's your next step.
Review s3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object., then practise related SAA-C03 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this SAA-C03 question test?
Design Resilient Architectures — This question tests Design Resilient Architectures — S3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object..
What is the correct answer to this question?
The correct answer is: Enable S3 versioning and configure cross-Region replication to a bucket in another Region. — Option C is correct because enabling S3 versioning protects against accidental overwrites and deletes by preserving all object versions, while cross-Region replication (CRR) asynchronously replicates objects to a bucket in another Region, enabling recovery from a full Region outage. With an RPO of about 1 hour, CRR meets this requirement as replication typically completes within minutes to a few hours, and versioning ensures point-in-time recovery of previous object states.
What should I do if I get this SAA-C03 question wrong?
Review s3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object., then practise related SAA-C03 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
S3 Versioning protects against accidental overwrites and deletes by keeping multiple versions of an object.
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Last reviewed: Jun 11, 2026
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