The correct answer is to enable Azure AD DS authentication for Azure Files, configure private endpoints, and assign RBAC roles to the VMs' managed identities. This combination works because private endpoints ensure traffic only flows over a specific virtual network, while Azure AD DS authentication enforces identity-based access over SMB, and RBAC roles on managed identities tie permissions directly to individual VMs rather than shared keys or broad network rules. On the AZ-500 exam, this scenario tests your understanding of layered access control—mixing network isolation with identity enforcement—and often appears as a trap where candidates mistakenly choose firewall-only rules or SAS tokens, which don’t support SMB or identity. Remember the mnemonic “PIN” for Private endpoints, Identity (Azure AD DS), and Network-restricted RBAC roles to recall the three required components for locking down Azure Files to specific VMs.
AZ-500 Secure compute, storage, and databases Practice Question
This AZ-500 practice question tests your understanding of secure compute, storage, and databases. 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.
Your company uses Azure File shares for departmental file storage. You need to restrict access to only specific VMs in the same virtual network using Azure AD authentication. What should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable Azure AD DS authentication for Azure Files, configure private endpoints, and assign RBAC roles to the VMs' managed identities.
Option D is correct because Azure Files supports identity-based authentication over SMB using Azure AD DS (or AD DS). Combined with private endpoints and network restrictions, you can limit access to VMs in the same VNet. Option A (SAS) is not for SMB. Option B (storage account key) is shared. Option C (firewall only) does not enforce identity.
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.
✓
Enable Azure AD DS authentication for Azure Files, configure private endpoints, and assign RBAC roles to the VMs' managed identities.
Why this is correct
This ensures only authorized VMs with managed identity can access the file share over SMB.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use the storage account key and restrict access to the VNet via firewall.
Why it's wrong here
The storage account key is a shared secret; if leaked, anyone with network access can connect.
✗
Configure the storage firewall to allow only the VNet, and use Azure AD authentication.
Why it's wrong here
Firewall alone does not enforce individual identity; Azure AD authentication must be enabled.
✗
Configure a SAS token with IP address restrictions.
Why it's wrong here
SAS tokens are not supported for SMB access.
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 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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-500 question in full detail.
Identify which AZ-500 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.
Secure compute, storage, and databases — This question tests Secure compute, storage, and databases — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable Azure AD DS authentication for Azure Files, configure private endpoints, and assign RBAC roles to the VMs' managed identities. — Option D is correct because Azure Files supports identity-based authentication over SMB using Azure AD DS (or AD DS). Combined with private endpoints and network restrictions, you can limit access to VMs in the same VNet. Option A (SAS) is not for SMB. Option B (storage account key) is shared. Option C (firewall only) does not enforce identity.
What should I do if I get this AZ-500 question wrong?
Identify which AZ-500 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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