- A
Create a user-assigned managed identity that can be attached to both Azure resources.
A user-assigned managed identity is reusable across resources and avoids storing secrets in application code or configuration.
- B
Grant Storage Blob Data Contributor on the target container to that identity.
This role allows blob data operations without granting storage account management permissions or access to unrelated containers.
- C
Store the storage account access key in both app settings and runbook variables.
Why wrong: Account keys are broad secrets that grant more access than needed and create secret-rotation and exposure risks.
- D
Assign Contributor on the storage account because it automatically includes all blob data permissions.
Why wrong: Contributor manages the resource, but it does not provide the required data-plane permissions for blob access.
- E
Use a shared SAS token without an expiration date for both workloads.
Why wrong: A long-lived SAS token is not least privilege and introduces a credential that can be leaked or reused.
Quick Answer
The answer is to assign a user-assigned managed identity to both the Function App and the Automation runbook, then grant that identity the Storage Blob Data Contributor role scoped to the target container. This configuration is correct because a managed identity eliminates the need for stored secrets by providing an Azure AD-backed identity that Azure resources can use to authenticate directly to Blob Storage, while the Storage Blob Data Contributor role precisely limits permissions to upload, read, and delete blobs within that single container. On the AZ-104 exam, this scenario tests your understanding of identity-based access control and least-privilege principles, often appearing as a trap where candidates mistakenly choose access keys or system-assigned identities that cannot be shared across resources. A key memory tip is “one shared identity, one scoped role”—remember that a user-assigned managed identity is reusable across multiple resources, and scoping the role to the container (not the storage account) enforces the minimal permissions required.
AZ-104 Implement and Manage Storage Practice Question
This AZ-104 practice question tests your understanding of implement and manage storage. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
An Azure Function App and an Azure Automation runbook both need to upload, read, and delete blobs in one container. You must avoid stored secrets and keep the permissions as limited as possible. Which two configuration choices should you make? Select two.
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
Create a user-assigned managed identity that can be attached to both Azure resources.
Option A is correct because a user-assigned managed identity provides a secure, credential-free authentication method for Azure resources. It allows both the Function App and Automation runbook to authenticate to Azure Storage without storing any secrets, meeting the requirement to avoid stored secrets.
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.
- ✓
Create a user-assigned managed identity that can be attached to both Azure resources.
Why this is correct
A user-assigned managed identity is reusable across resources and avoids storing secrets in application code or configuration.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Grant Storage Blob Data Contributor on the target container to that identity.
Why this is correct
This role allows blob data operations without granting storage account management permissions or access to unrelated containers.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Store the storage account access key in both app settings and runbook variables.
Why it's wrong here
Account keys are broad secrets that grant more access than needed and create secret-rotation and exposure risks.
- ✗
Assign Contributor on the storage account because it automatically includes all blob data permissions.
Why it's wrong here
Contributor manages the resource, but it does not provide the required data-plane permissions for blob access.
- ✗
Use a shared SAS token without an expiration date for both workloads.
Why it's wrong here
A long-lived SAS token is not least privilege and introduces a credential that can be leaked or reused.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse the Contributor role on the storage account with data plane permissions, not realizing that Contributor only grants management plane access and does not allow blob operations.
Detailed technical explanation
How to think about this question
User-assigned managed identities are Azure Active Directory identities that can be assigned to multiple Azure resources. They use Azure AD tokens for authentication, which are automatically rotated by the platform. The Storage Blob Data Contributor role grants specific permissions to read, write, and delete blobs, adhering to the principle of least privilege by scoping access to the target container only.
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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FAQ
Questions learners often ask
What does this AZ-104 question test?
Implement and Manage Storage — This question tests Implement and Manage Storage — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a user-assigned managed identity that can be attached to both Azure resources. — Option A is correct because a user-assigned managed identity provides a secure, credential-free authentication method for Azure resources. It allows both the Function App and Automation runbook to authenticate to Azure Storage without storing any secrets, meeting the requirement to avoid stored secrets.
What should I do if I get this AZ-104 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on AZ-104
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An Azure Automation job running on a VM uses a managed identity to upload and overwrite JSON files in one container named configs. The job must not list, delete, or modify any other containers in the storage account. Which role assignment is the best choice?
hard- ✓ A.Storage Blob Data Contributor at the configs container scope
- B.Storage Blob Data Owner at the storage account scope
- C.Contributor at the resource group scope
- D.Storage Queue Data Contributor at the storage account scope
Why A: The Storage Blob Data Contributor role at the container scope grants the managed identity the necessary permissions to upload and overwrite blobs (including JSON files) within the 'configs' container, while explicitly preventing listing, deleting, or modifying other containers in the storage account. This role includes the 'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/write' action, which allows overwriting existing blobs, but does not include any actions on the container itself (like listing or deleting containers) or on other containers. Scoping the role to the specific container ensures the principle of least privilege is strictly followed.
Last reviewed: Jun 11, 2026
This AZ-104 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 AZ-104 exam.
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