- A
The storage account name is correct
Why wrong: Would give 404, not 403
- B
The storage account firewall is configured to allow Azure services
Why wrong: Would give network-level error, not 403
- C
A private endpoint is configured between Databricks and the storage account
Why wrong: Not required for access
- D
The managed identity has 'Storage Blob Data Contributor' role assigned to the storage account
RBAC role is required for write access
Question 586 of 851
DP-203 Managed Identity Practice Question
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. A key principle to apply: managed Identity. 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.
You are troubleshooting an Azure Databricks job that writes data to Azure Data Lake Storage Gen2. The job fails with '403 Forbidden' error. The Databricks workspace uses a managed identity (system-assigned) for authentication. What should you verify?
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 managed identity has 'Storage Blob Data Contributor' role assigned to the storage account
The 403 Forbidden error indicates that authentication succeeded but authorization failed. For a managed identity to write data to Azure Data Lake Storage Gen2, it must be assigned the 'Storage Blob Data Contributor' RBAC role on the storage account. This role grants read, write, and delete permissions for blobs and directories. Without this role assignment, the managed identity cannot write data, resulting in a 403 error. Even if the storage account name is correct (A), the firewall is configured (B), or a private endpoint exists (C), the missing RBAC role assignment will cause the failure.
Key principle: Managed Identity
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 storage account name is correct
Why it's wrong here
Would give 404, not 403
- ✗
The storage account firewall is configured to allow Azure services
Why it's wrong here
Would give network-level error, not 403
- ✗
A private endpoint is configured between Databricks and the storage account
Why it's wrong here
Not required for access
- ✓
The managed identity has 'Storage Blob Data Contributor' role assigned to the storage account
Why this is correct
RBAC role is required for write access
Related concept
Managed Identity
Common exam traps
Common exam trap: answer the scenario, not the keyword
A common trap is to confuse 403 Forbidden (authorization failure) with 404 Not Found (resource not found). Ensure you check RBAC role assignments for managed identities rather than network configurations or resource existence.
Detailed technical explanation
How to think about this question
Treat this as a scenario question. Identify the problem, the constraint, and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Managed Identity
- RBAC Role Assignment
- 403 Forbidden
- Azure Data Lake Storage Gen2
TExam Day Tips
- 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
Managed Identity
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
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 |
What to study next
Got this wrong? Here's your next step.
Review managed Identity, then practise related DP-203 questions on the same topic to reinforce the concept.
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FAQ
Questions learners often ask
What does this DP-203 question test?
Secure, monitor, and optimize data storage and data processing — This question tests Secure, monitor, and optimize data storage and data processing — Managed Identity.
What is the correct answer to this question?
The correct answer is: The managed identity has 'Storage Blob Data Contributor' role assigned to the storage account — The 403 Forbidden error indicates that authentication succeeded but authorization failed. For a managed identity to write data to Azure Data Lake Storage Gen2, it must be assigned the 'Storage Blob Data Contributor' RBAC role on the storage account. This role grants read, write, and delete permissions for blobs and directories. Without this role assignment, the managed identity cannot write data, resulting in a 403 error. Even if the storage account name is correct (A), the firewall is configured (B), or a private endpoint exists (C), the missing RBAC role assignment will cause the failure.
What should I do if I get this DP-203 question wrong?
Review managed Identity, then practise related DP-203 questions on the same topic to reinforce the concept.
What is the key concept behind this question?
Managed Identity
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Last reviewed: Jun 21, 2026
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