- A
Generate a shared access signature (SAS) token with limited permissions.
Why wrong: SAS tokens are not tied to user identity.
- B
Assign Azure RBAC roles such as Storage Blob Data Contributor to users or groups.
RBAC provides role-based access control integrated with Entra ID.
- C
Configure a storage firewall to allow only specific IP addresses.
Why wrong: Firewall controls network access, not identity.
- D
Use storage account access keys for authentication.
Why wrong: Access keys are shared secrets, not identity-based.
- E
Enable hierarchical namespace on the storage account.
Hierarchical namespace is required for ACL-based authorization.
Question 401 of 851
Secure, monitor, and optimize data storage and data processing →mediumMultiple SelectObjective-mapped
DP-203 Practice Question: Secure, monitor, and optimize data storage and data processing
This DP-203 practice question tests your understanding of secure, monitor, and optimize data storage and data processing. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. 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.
Which TWO actions should you take to secure access to an Azure Data Lake Storage Gen2 account using Microsoft Entra ID?
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
✓
Assign Azure RBAC roles such as Storage Blob Data Contributor to users or groups.
Correct options are B and E. Option B: Assigning Azure RBAC roles such as Storage Blob Data Contributor uses Microsoft Entra ID to grant coarse-grained access to the storage account. Option E: Enabling hierarchical namespace is necessary to use ACLs (access control lists) for fine-grained permissions, which can be integrated with Entra ID. Option A is wrong because SAS tokens bypass Entra ID and provide access via shared key. Option C is wrong because firewall rules restrict network access, not identity. Option D is wrong because storage account access keys bypass Entra ID entirely.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Generate a shared access signature (SAS) token with limited permissions.
Why it's wrong here
SAS tokens are not tied to user identity.
- ✓
Assign Azure RBAC roles such as Storage Blob Data Contributor to users or groups.
Why this is correct
RBAC provides role-based access control integrated with Entra ID.
Related concept
Standard ACLs match source addresses.
- ✗
Configure a storage firewall to allow only specific IP addresses.
Why it's wrong here
Firewall controls network access, not identity.
- ✗
Use storage account access keys for authentication.
Why it's wrong here
Access keys are shared secrets, not identity-based.
- ✓
Enable hierarchical namespace on the storage account.
Why this is correct
Hierarchical namespace is required for ACL-based authorization.
Related concept
Standard ACLs match source addresses.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
- Standard ACLs match source addresses.
- Extended ACLs can match source, destination, protocol and ports.
- The first matching ACL entry is used.
- There is usually an implicit deny at the end.
TExam Day Tips
- Check inbound versus outbound direction.
- Read the ACL from top to bottom.
- Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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.
Visual reference
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 ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DP-203 ACL questions on filtering logic and placement.
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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 — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Assign Azure RBAC roles such as Storage Blob Data Contributor to users or groups. — Correct options are B and E. Option B: Assigning Azure RBAC roles such as Storage Blob Data Contributor uses Microsoft Entra ID to grant coarse-grained access to the storage account. Option E: Enabling hierarchical namespace is necessary to use ACLs (access control lists) for fine-grained permissions, which can be integrated with Entra ID. Option A is wrong because SAS tokens bypass Entra ID and provide access via shared key. Option C is wrong because firewall rules restrict network access, not identity. Option D is wrong because storage account access keys bypass Entra ID entirely.
What should I do if I get this DP-203 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DP-203 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Last reviewed: Jun 21, 2026
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