- A
A system-assigned managed identity on the App Service and an Azure RBAC role on the storage account.
A system-assigned managed identity is ideal when one Azure resource needs to access storage without secrets. The identity is created and deleted with the App Service, and RBAC can grant only the storage permissions required. This removes the need to embed keys or connection strings and aligns with credential-free application access.
- B
The storage account key, because it is the simplest way to authenticate an application securely.
Why wrong: The account key works, but it is a shared secret that must be protected and rotated. The requirement explicitly says not to store keys or secrets.
- C
A shared access signature embedded in the app settings, because SAS is the same as managed identity.
Why wrong: A SAS token can reduce scope, but it is still a secret that must be stored and managed. It is not the same as a managed identity and does not meet the no-secrets requirement.
- D
An anonymous public container with write access disabled on the account.
Why wrong: Public access does not provide authenticated write access for a web application. It also weakens security far beyond what the scenario allows.
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.
A web app running in Azure App Service must upload images to a blob container without storing any account keys, passwords, or connection strings in configuration. The app uses only one Azure resource. What should the administrator configure?
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
A system-assigned managed identity on the App Service and an Azure RBAC role on the storage account.
A system-assigned managed identity allows the App Service to authenticate to Azure Storage without storing any credentials in configuration. By assigning the RBAC role (e.g., Storage Blob Data Contributor) to that identity, the app can securely upload images using Azure AD authentication, meeting the requirement of no account keys, passwords, or connection strings.
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.
- ✓
A system-assigned managed identity on the App Service and an Azure RBAC role on the storage account.
Why this is correct
A system-assigned managed identity is ideal when one Azure resource needs to access storage without secrets. The identity is created and deleted with the App Service, and RBAC can grant only the storage permissions required. This removes the need to embed keys or connection strings and aligns with credential-free application access.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The storage account key, because it is the simplest way to authenticate an application securely.
Why it's wrong here
The account key works, but it is a shared secret that must be protected and rotated. The requirement explicitly says not to store keys or secrets.
- ✗
A shared access signature embedded in the app settings, because SAS is the same as managed identity.
Why it's wrong here
A SAS token can reduce scope, but it is still a secret that must be stored and managed. It is not the same as a managed identity and does not meet the no-secrets requirement.
- ✗
An anonymous public container with write access disabled on the account.
Why it's wrong here
Public access does not provide authenticated write access for a web application. It also weakens security far beyond what the scenario allows.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse shared access signatures (SAS) with managed identities, thinking SAS can be used without storing secrets, but SAS tokens still require a key to generate and must be stored or regenerated, whereas managed identity eliminates all stored credentials.
Trap categories for this question
Scenario analysis trap
Public access does not provide authenticated write access for a web application. It also weakens security far beyond what the scenario allows.
Detailed technical explanation
How to think about this question
Managed identities use the Azure Instance Metadata Service (IMDS) to obtain an access token for Azure AD, which is then used to authenticate to the storage account via OAuth 2.0. The RBAC role assignment is evaluated at the control plane, and the token includes the identity's object ID, allowing fine-grained access control. In a real-world scenario, this eliminates the need to rotate keys and reduces the attack surface, as the identity is tied to the App Service lifecycle.
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.
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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: A system-assigned managed identity on the App Service and an Azure RBAC role on the storage account. — A system-assigned managed identity allows the App Service to authenticate to Azure Storage without storing any credentials in configuration. By assigning the RBAC role (e.g., Storage Blob Data Contributor) to that identity, the app can securely upload images using Azure AD authentication, meeting the requirement of no account keys, passwords, or connection strings.
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
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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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