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Data Protection →mediumMultiple ChoiceObjective-mapped

SCS-C02 Data Protection Practice Question

This SCS-C02 practice question tests your understanding of data protection. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 healthcare company stores sensitive patient data in Amazon S3. The security team has implemented a data protection strategy that includes S3 default encryption using SSE-KMS with a customer managed key. They also use S3 Object Lock to prevent deletion. Recently, an administrator accidentally deleted the KMS key used for encryption. As a result, all objects in the bucket are now inaccessible. The company has a backup of the key material but does not have the original key ID. Which action should the team take to restore access to the data?

A
Use the backup key material directly in an application to decrypt objects without KMS.
Why wrong: Objects encrypted with KMS require KMS to decrypt; you cannot bypass KMS.
B
Import the key material into a new KMS key and re-encrypt all objects using S3 Batch Operations.
You can create a new key and re-encrypt objects, but you need the original key material to decrypt first.
C
Create a new KMS key with the same key ID using the backup material.
Why wrong: KMS does not allow specifying a key ID during creation.
D
Restore the deleted KMS key from the CloudHSM backup.
Why wrong: Once deleted, a KMS key cannot be restored; you must have disabled it.

Full breakdown with real-world context →

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

✓

Import the key material into a new KMS key and re-encrypt all objects using S3 Batch Operations.

The correct answer is B. When a KMS key is deleted and you have a backup of the key material, you can import that material into a new KMS key. Even though the new key has a different key ID, because the cryptographic material is identical, it can decrypt the data keys that were encrypted with the original key. S3 Batch Operations can then re-encrypt all objects under the new key, restoring access. Option A is incorrect because the objects were encrypted with SSE-KMS, meaning the data key itself is encrypted by KMS and cannot be decrypted without the KMS key. Option C is incorrect because KMS does not allow you to specify the key ID when creating a new key; AWS generates a unique key ID. Option D is incorrect because CloudHSM is a separate service for generating and storing keys; it is not used to back up KMS keys.

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.

✗
Use the backup key material directly in an application to decrypt objects without KMS.
Why it's wrong here
Objects encrypted with KMS require KMS to decrypt; you cannot bypass KMS.
✓
Import the key material into a new KMS key and re-encrypt all objects using S3 Batch Operations.
Why this is correct
You can create a new key and re-encrypt objects, but you need the original key material to decrypt first.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a new KMS key with the same key ID using the backup material.
Why it's wrong here
KMS does not allow specifying a key ID during creation.
✗
Restore the deleted KMS key from the CloudHSM backup.
Why it's wrong here
Once deleted, a KMS key cannot be restored; you must have disabled it.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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.

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

What to study next

Got this wrong? Here's your next step.

Identify which SCS-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this SCS-C02 question test?

Data Protection — This question tests Data Protection — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Import the key material into a new KMS key and re-encrypt all objects using S3 Batch Operations. — The correct answer is B. When a KMS key is deleted and you have a backup of the key material, you can import that material into a new KMS key. Even though the new key has a different key ID, because the cryptographic material is identical, it can decrypt the data keys that were encrypted with the original key. S3 Batch Operations can then re-encrypt all objects under the new key, restoring access. Option A is incorrect because the objects were encrypted with SSE-KMS, meaning the data key itself is encrypted by KMS and cannot be decrypted without the KMS key. Option C is incorrect because KMS does not allow you to specify the key ID when creating a new key; AWS generates a unique key ID. Option D is incorrect because CloudHSM is a separate service for generating and storing keys; it is not used to back up KMS keys.

What should I do if I get this SCS-C02 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.