- A
Enable S3 versioning on the bucket and configure cross-Region replication so previous versions are available after regional loss and accidental deletion.
Versioning retains prior object versions, and cross-Region replication provides redundancy across Regions for recovery after deletion or disaster.
- B
Move all objects to S3 Glacier Instant Retrieval and apply a lifecycle policy to keep only the latest object copy.
Why wrong: Glacier storage tiers do not prevent deletion of the latest version, and keeping only the latest copy fails the recovery requirement.
- C
Use S3 server-side encryption with KMS keys and rely on access logs to manually recover the deleted objects.
Why wrong: Encryption protects confidentiality but does not retain deleted data, and access logs do not reconstruct object contents.
- D
Enable S3 bucket policies that deny DeleteObject, but do not enable versioning or replication.
Why wrong: A deny policy can reduce future mistakes, but it does not provide recovery for the already-deleted objects or disaster resilience.
SAA-C03 Design Resilient Architectures Practice Question
This SAA-C03 practice question tests your understanding of design resilient architectures. 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.
Your media processing pipeline writes original uploads to an S3 bucket and later generates derivative files. An operator accidentally deletes a subset of original uploads in production. You need to (1) restore the deleted objects with minimal data loss and (2) protect against both regional disasters and future operator mistakes. The company requires recovery even if objects are deleted and later overwritten.
What is the most effective change to meet these requirements?
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 on the bucket and configure cross-Region replication so previous versions are available after regional loss and accidental deletion.
Option A is correct because enabling S3 Versioning preserves all object versions, including overwrites and deletions (which become delete markers), allowing you to restore deleted objects by removing the delete marker. Cross-Region Replication (CRR) replicates both current and previous versions to a secondary Region, protecting against regional disasters. Together, they ensure recovery even if objects are deleted and later overwritten, meeting all requirements.
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.
- ✓
Enable S3 versioning on the bucket and configure cross-Region replication so previous versions are available after regional loss and accidental deletion.
Why this is correct
Versioning retains prior object versions, and cross-Region replication provides redundancy across Regions for recovery after deletion or disaster.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Move all objects to S3 Glacier Instant Retrieval and apply a lifecycle policy to keep only the latest object copy.
Why it's wrong here
Glacier storage tiers do not prevent deletion of the latest version, and keeping only the latest copy fails the recovery requirement.
- ✗
Use S3 server-side encryption with KMS keys and rely on access logs to manually recover the deleted objects.
Why it's wrong here
Encryption protects confidentiality but does not retain deleted data, and access logs do not reconstruct object contents.
- ✗
Enable S3 bucket policies that deny DeleteObject, but do not enable versioning or replication.
Why it's wrong here
A deny policy can reduce future mistakes, but it does not provide recovery for the already-deleted objects or disaster resilience.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may think a bucket policy denying DeleteObject is sufficient to prevent data loss, but it does not protect against overwrites, authorized user mistakes, or regional disasters, and without versioning, deleted objects are permanently lost.
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 deleted, a delete marker is inserted instead of removing the underlying data, and you can restore the object by deleting the delete marker. Cross-Region Replication (CRR) asynchronously replicates objects to a destination bucket in a different AWS Region, and when configured with versioning, it replicates all versions, including delete markers (if enabled), ensuring data durability across regions. The combination of versioning and CRR provides a robust recovery mechanism against both accidental deletions and regional outages, with a Recovery Point Objective (RPO) typically within minutes.
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 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.
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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 — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable S3 versioning on the bucket and configure cross-Region replication so previous versions are available after regional loss and accidental deletion. — Option A is correct because enabling S3 Versioning preserves all object versions, including overwrites and deletions (which become delete markers), allowing you to restore deleted objects by removing the delete marker. Cross-Region Replication (CRR) replicates both current and previous versions to a secondary Region, protecting against regional disasters. Together, they ensure recovery even if objects are deleted and later overwritten, meeting all requirements.
What should I do if I get this SAA-C03 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This SAA-C03 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 SAA-C03 exam.
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