SCS-C02 Data Protection Practice Question
A company has a critical application that stores sensitive data in Amazon DynamoDB. The security team requires that all data stored in DynamoDB is encrypted at rest using a customer-managed KMS key. Additionally, they want to ensure that the key can be rotated automatically every year. Which combination of actions should be taken?
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
✓
Use a customer-managed KMS key and enable automatic key rotation
DynamoDB supports encryption at rest with a customer-managed KMS key, and KMS supports automatic annual rotation for customer-managed keys. Option A is wrong because DynamoDB does not use CloudHSM. Option C is wrong because automatic rotation is not available for AWS managed keys (which DynamoDB uses by default). Option D is wrong because you cannot enable encryption on a table created without encryption except by recreating it.
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 a CloudHSM key store and enable automatic rotation
Why it's wrong here
Wrong: DynamoDB does not integrate with CloudHSM for encryption.
- ✓
Use a customer-managed KMS key and enable automatic key rotation
Why this is correct
Correct: DynamoDB supports customer-managed KMS keys and KMS automatic rotation.
- ✗
Use an AWS managed KMS key and enable automatic key rotation
Why it's wrong here
Wrong: AWS managed keys do not support automatic rotation.
- ✗
Enable encryption on the existing DynamoDB table and use a customer-managed KMS key
Why it's wrong here
Wrong: You cannot enable encryption on an existing DynamoDB table; you must create a new table.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.