DP-203 Design and implement data storage Practice Question
A healthcare company stores sensitive patient data in Azure Data Lake Storage Gen2. They need to ensure that only authorized users can access data and that all access is audited. They also need to prevent data from being accessed by unauthorized Azure services. Which combination of security features should be used?
⚠ Common exam trap
Microsoft often tests the misconception that disabling public access alone is sufficient to block unauthorized Azure services, when in fact service endpoints or private endpoints are required to prevent access from other Azure services within the same region.
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 Azure RBAC and ACLs for authorization, enable firewall and virtual network service endpoints, and enable diagnostic settings for auditing.
It combines Azure RBAC and ACLs for fine-grained authorization, a firewall with virtual network service endpoints to restrict access to authorized networks, and diagnostic settings to capture audit logs. This layered approach ensures that only authorized users can access the data, all access is audited, and unauthorized Azure services are blocked by the firewall and service endpoints.
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 private endpoint and Azure AD authentication, disable public access.
Why it's wrong here
Private endpoint secures network but doesn't provide fine-grained access control.
- ✓
Use Azure RBAC and ACLs for authorization, enable firewall and virtual network service endpoints, and enable diagnostic settings for auditing.
Why this is correct
Combination provides layered security and full audit.
- ✗
Use managed identity for service access and disable public access.
Why it's wrong here
Doesn't restrict unauthorized Azure services unless combined with firewall.
- ✗
Use Azure AD authentication and SAS tokens for access, enabling diagnostic logs for auditing.
Why it's wrong here
SAS tokens are not fully auditable for individual user actions.
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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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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