DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
Your company uses Azure Data Lake Storage Gen2. You need to ensure that data at rest is encrypted using a customer-managed key stored in Azure Key Vault. What should you configure?
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 'Azure Storage encryption' with customer-managed keys in the storage account's encryption blade.
Azure Storage encryption with customer-managed keys is configured in the encryption blade of the storage account. This ensures data at rest is encrypted using a key stored in Azure Key Vault. Option A is incorrect because Azure Policy can audit or enforce encryption but does not configure customer-managed keys. Option C is incorrect because client-side encryption encrypts data before it reaches Azure Storage, not at rest. Option D is incorrect because infrastructure encryption provides a second encryption layer but does not use customer-managed keys for the primary encryption.
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 Azure Policy to audit storage accounts without encryption.
Why it's wrong here
Policy audits but does not configure encryption.
- ✓
Enable 'Azure Storage encryption' with customer-managed keys in the storage account's encryption blade.
Why this is correct
This configures server-side encryption with CMK.
- ✗
Implement client-side encryption in the application code.
Why it's wrong here
Client-side encryption is for data in transit.
- ✗
Enable 'Infrastructure encryption' for double encryption.
Why it's wrong here
Infrastructure encryption is for double encryption, not for using CMK.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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