The correct combination to prevent accidental deletion in S3 is to enable S3 Versioning and MFA Delete. Versioning preserves every version of an object, so even if a user deletes the current version, the object can be recovered from a prior version or a delete marker. MFA Delete adds a critical second authentication factor—requiring a time-based one-time password from a hardware or virtual MFA device—before any versioned object can be permanently deleted or before the bucket’s versioning state can be suspended. On the AWS Certified Security Specialty SCS-C02 exam, this question tests your understanding of defense-in-depth for data protection; a common trap is to confuse Object Lock (which prevents overwrites during a retention period but does not block bucket deletion or unversioned deletes) with MFA Delete. Remember the memory tip: “Versioning saves the past, MFA locks the delete.”
SCS-C02 Data Protection Practice Question
This SCS-C02 practice question tests your understanding of data protection. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 is designing a data protection solution for Amazon S3 that must prevent any user from accidentally deleting objects. Which combination of S3 features should be used?
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 MFA Delete.
Option A is correct because MFA Delete adds an extra factor for deletions, and versioning allows recovery of deleted objects. Option B is wrong because Object Lock prevents overwrites/deletion only if retention period is set, but doesn't prevent deletion of the bucket. Option C is wrong because replication doesn't protect against deletion. Option D is wrong because default encryption doesn't prevent deletion.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Use S3 Cross-Region Replication to another bucket.
Why it's wrong here
Replication does not prevent deletion; it only creates copies.
✗
Enable S3 Object Lock with governance mode.
Why it's wrong here
Object Lock prevents modification, but not deletion of the entire bucket; MFA Delete is more appropriate.
✗
Configure S3 default encryption with SSE-KMS.
Why it's wrong here
Encryption does not prevent deletion.
✓
Enable S3 Versioning and MFA Delete.
Why this is correct
Versioning preserves objects and MFA Delete requires multi-factor authentication to delete versions.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SCS-C02 NAT questions on configuration and troubleshooting.
Data Protection — This question tests Data Protection — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Enable S3 Versioning and MFA Delete. — Option A is correct because MFA Delete adds an extra factor for deletions, and versioning allows recovery of deleted objects. Option B is wrong because Object Lock prevents overwrites/deletion only if retention period is set, but doesn't prevent deletion of the bucket. Option C is wrong because replication doesn't protect against deletion. Option D is wrong because default encryption doesn't prevent deletion.
What should I do if I get this SCS-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SCS-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This SCS-C02 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 SCS-C02 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.