The answer is that the managed identity lacks an access policy or RBAC role in Key Vault. Simply assigning a managed identity to an App Service does not automatically grant it permission to read secrets; you must explicitly authorize that identity within Key Vault’s permission model, either through an access policy (using the vault’s legacy permissions) or by assigning an Azure RBAC role like “Key Vault Secrets User” at the vault scope. On the AZ-204 exam, this question tests your understanding that identity assignment and authorization are separate steps—a common trap is assuming the identity is “active” as soon as it’s enabled. Remember the mnemonic: “Assign then allow”—first assign the identity, then allow it with a policy or role, or you’ll hit a 403.
AZ-204 Implement Azure security Practice Question
This AZ-204 practice question tests your understanding of implement azure security. 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.
You are configuring a managed identity for an Azure App Service to access Azure Key Vault. The identity has been assigned, but the app receives a 403 Forbidden when trying to retrieve a secret. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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 lacks an access policy or RBAC role in Key Vault
The managed identity must be granted explicit access via an access policy or RBAC role in Key Vault. Simply assigning the identity does not grant access.
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.
✗
The app is using the wrong endpoint
Why it's wrong here
If the endpoint is wrong, the error would be different (e.g., 404).
✗
The managed identity is not enabled in the App Service
Why it's wrong here
If the identity is assigned but not enabled, the app would get a different error.
✓
The managed identity lacks an access policy or RBAC role in Key Vault
Why this is correct
Access policies or RBAC roles are required to authorize the identity to read secrets.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The Key Vault firewall is blocking the request
Why it's wrong here
A firewall block would typically result in a timeout or connection refused, not a 403.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Implement Azure security — This question tests Implement Azure security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The managed identity lacks an access policy or RBAC role in Key Vault — The managed identity must be granted explicit access via an access policy or RBAC role in Key Vault. Simply assigning the identity does not grant access.
What should I do if I get this AZ-204 question wrong?
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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 →
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. Your Azure App Service app must access Azure Key Vault secrets without storing credentials in code. Which service should you use to manage identities?
easy
A.Service principal with client secret
✓ B.Managed identity
C.Storage account access key
D.Client certificate
Why B: Option B is correct because managed identities provide an automatically managed identity for Azure resources to access Key Vault securely. Option A is wrong because service principals require manual credential management. Option C is wrong because certificates still require storage. Option D is wrong because shared access keys are for storage, not Key Vault.
Last reviewed: Jun 20, 2026
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This AZ-204 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-204 exam.
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