DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
Exhibit
Refer to the exhibit.
{
"encryption": {
"keySource": "Microsoft.Keyvault",
"keyvaultproperties": {
"keyvaulturi": "https://mykeyvault.vault.azure.net/",
"keyname": "mykey",
"keyversion": "1"
}
}
}You are reviewing the ARM template snippet for an Azure Data Lake Storage Gen2 account. The template fails to deploy with an error that the encryption key cannot be accessed. What is the most likely cause?
⚠ Common exam trap
DP-203 often tests the distinction between key vault configuration errors (soft-delete, URI, key name) and identity/permission errors, so candidates must recognize that 'cannot be accessed' points to missing Get/Wrap/Unwrap Key permissions.
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
✓
The Data Lake Storage account does not have Get and Wrap Key permissions on the key vault.
When an ARM template configures customer-managed keys for Azure Data Lake Storage Gen2, the storage account's system-assigned or user-assigned managed identity must have Get, Wrap Key, and Unwrap Key permissions on the key vault. The error 'encryption key cannot be accessed' almost always indicates the access policy or RBAC role assignment is missing these permissions, so the storage service cannot retrieve the key. Soft-delete, key name/version, and URI formatting would produce different, more specific errors.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The key vault does not have soft-delete enabled.
Why it's wrong here
Soft-delete is not required for encryption key access.
- ✓
The Data Lake Storage account does not have Get and Wrap Key permissions on the key vault.
Why this is correct
The storage account's identity must have these permissions to use the key.
- ✗
The key name or version is incorrect.
Why it's wrong here
The key name and version are specified.
- ✗
The key vault URI is incorrectly formatted.
Why it's wrong here
The URI appears correctly formatted.
Quick reference
Access Control Model Comparison
| Model | Acronym | Who Controls Access? | Best For |
|---|---|---|---|
| Discretionary Access Control | DAC | Resource owner | Small teams, file shares |
| Mandatory Access Control | MAC | System / security labels | Classified govt / military |
| Role-Based Access Control | RBAC | Administrator (via roles) | Enterprise environments |
| Attribute-Based Access Control | ABAC | Policy engine (user + resource attributes) | Fine-grained, dynamic policies |
| Rule-Based Access Control | RuBAC | System rules / ACLs | Firewall rules, network ACLs |
Go deeper
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
This DP-203 practice question is part of Courseiva's free Microsoft 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 DP-203 exam.