- A
Assign the Contributor role to the Finance users at the management group scope
Why wrong: Contributor at management group scope grants full access to all resources in all subscriptions, which is excessive.
- B
Assign the Storage Blob Data Reader role to the Finance users at the Finance resource group scope
This assignment grants read access to blob data in all storage accounts within the Finance resource group.
- C
Assign the Reader role to the Finance users at the subscription scope
Why wrong: Reader at subscription scope grants read access to all resource groups, not just Finance.
- D
Assign the Storage Account Contributor role to the Finance users at each storage account scope
Why wrong: This would require multiple assignments and is less efficient than assigning at the resource group scope.
Quick Answer
The answer is to assign the Storage Blob Data Reader role to the Finance users at the Finance resource group scope. This is correct because RBAC roles applied at the resource group level are inherited by all child resources, meaning every storage account within that group automatically enforces the same permissions for blob data access. On the Microsoft Azure Solutions Architect Expert AZ-305 exam, this scenario tests your understanding of scope inheritance versus role assignment—a common trap is assigning the role at the subscription or individual storage account level, which either grants too broad access or requires repetitive configuration. Remember that Azure RBAC separates management plane roles (like Contributor) from data plane roles (like Storage Blob Data Reader), and for securing storage account access, you must use a data plane role at the correct scope. A useful memory tip: "Group scope, blob role—one assignment controls the whole goal."
AZ-305 Practice Question: Design identity, governance, and monitoring solutions
This AZ-305 practice question tests your understanding of design identity, governance, and monitoring solutions. 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.
Your organization uses Microsoft Azure and has a subscription with multiple resource groups. You need to ensure that only users in the Finance department can access storage accounts in the 'Finance' resource group. The solution must use role-based access control (RBAC). What should you assign?
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 the Storage Blob Data Reader role to the Finance users at the Finance resource group scope
Option B is correct because assigning the Storage Blob Data Reader role at the Finance resource group scope grants Finance users read access to blob data within all storage accounts in that resource group, using RBAC. This meets the requirement of restricting access to only the Finance department while leveraging Azure RBAC's built-in data plane role for storage.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Assign the Contributor role to the Finance users at the management group scope
Why it's wrong here
Contributor at management group scope grants full access to all resources in all subscriptions, which is excessive.
- ✓
Assign the Storage Blob Data Reader role to the Finance users at the Finance resource group scope
Why this is correct
This assignment grants read access to blob data in all storage accounts within the Finance resource group.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Assign the Reader role to the Finance users at the subscription scope
Why it's wrong here
Reader at subscription scope grants read access to all resource groups, not just Finance.
- ✗
Assign the Storage Account Contributor role to the Finance users at each storage account scope
Why it's wrong here
This would require multiple assignments and is less efficient than assigning at the resource group scope.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse management plane roles (like Contributor or Storage Account Contributor) with data plane roles (like Storage Blob Data Reader), mistakenly thinking Contributor grants data access, when in fact it only grants management access unless combined with a data plane role.
Detailed technical explanation
How to think about this question
Azure RBAC separates management plane roles (e.g., Contributor, Storage Account Contributor) from data plane roles (e.g., Storage Blob Data Reader). The Storage Blob Data Reader role specifically grants read access to blob containers and data via Azure AD authentication, which is essential for accessing storage account data without granting management capabilities. Assigning at the resource group scope ensures all storage accounts within that group inherit the role, simplifying management and adhering to least privilege.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Design identity, governance, and monitoring solutions — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-305 question test?
Design identity, governance, and monitoring solutions — This question tests Design identity, governance, and monitoring solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Assign the Storage Blob Data Reader role to the Finance users at the Finance resource group scope — Option B is correct because assigning the Storage Blob Data Reader role at the Finance resource group scope grants Finance users read access to blob data within all storage accounts in that resource group, using RBAC. This meets the requirement of restricting access to only the Finance department while leveraging Azure RBAC's built-in data plane role for storage.
What should I do if I get this AZ-305 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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