The answer is that the managed identity lacks 'Get', 'Wrap Key', and 'Unwrap Key' permissions on the Key Vault key. This is because Azure SQL Database uses the user-assigned managed identity to authenticate to Key Vault and perform cryptographic operations; without these three specific permissions, the database cannot retrieve the key or use it to encrypt and decrypt the data encryption key, resulting in the 'Inaccessible' TDE status. On the DP-300 exam, this scenario tests your understanding of the required access policy for customer-managed keys, and a common trap is to blame Key Vault firewall rules or the key’s existence rather than the missing permissions. Remember the mnemonic "Get, Wrap, Unwrap" — if any of these three is missing, TDE with CMK will show as inaccessible.
DP-300 Implement a secure environment Practice Question
This DP-300 practice question tests your understanding of implement a secure environment. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Refer to the exhibit. You are configuring Azure SQL Database Transparent Data Encryption (TDE) with customer-managed keys (CMK) stored in Azure Key Vault. The deployment uses a user-assigned managed identity. However, after deployment, the TDE status shows 'Inaccessible'. 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 'Get', 'Wrap Key', and 'Unwrap Key' permissions on the Key Vault key
Option A is correct because the managed identity needs to have 'Get, Wrap Key, Unwrap Key' permissions on the Key Vault key. Without those, the SQL Database cannot access the key. Option B is wrong because Key Vault firewall rules could block access, but the most common issue is missing permissions. Option C is wrong because the key exists. Option D is wrong because the identity is assigned correctly.
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 key specified in the URI does not exist
Why it's wrong here
The key exists because it is specified.
✗
The user-assigned managed identity is not assigned to the SQL Database server
Why it's wrong here
The identity is specified in the template, so it is assigned.
✗
The Key Vault firewall is enabled and does not allow Azure services
Why it's wrong here
If firewall is enabled, it could block access, but the most common issue is missing permissions.
✓
The managed identity lacks 'Get', 'Wrap Key', and 'Unwrap Key' permissions on the Key Vault key
Why this is correct
These permissions are required for TDE with CMK.
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.
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 DP-300 question in full detail.
Identify which DP-300 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 a secure environment — This question tests Implement a secure environment — 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 'Get', 'Wrap Key', and 'Unwrap Key' permissions on the Key Vault key — Option A is correct because the managed identity needs to have 'Get, Wrap Key, Unwrap Key' permissions on the Key Vault key. Without those, the SQL Database cannot access the key. Option B is wrong because Key Vault firewall rules could block access, but the most common issue is missing permissions. Option C is wrong because the key exists. Option D is wrong because the identity is assigned correctly.
What should I do if I get this DP-300 question wrong?
Identify which DP-300 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 →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
This DP-300 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 DP-300 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.