The answer is to install the Password Protection DC agent on each domain controller. This additional step is required because the Password Protection proxy server alone only communicates with Microsoft Entra ID to download the password policy, but it cannot enforce it; the DC agent is a password filter that runs directly on each domain controller to intercept and validate password change operations against the policy. On the MS-102 exam, this scenario tests your understanding of the hybrid enforcement architecture, often appearing as a trap where candidates mistakenly think the proxy is sufficient. A common memory tip is to remember that the proxy talks to the cloud, but the DC agent talks to the password—without the agent on every domain controller, weak passwords will still be accepted locally.
MS-102 Deploy and manage a Microsoft 365 tenant Practice Question
This MS-102 practice question tests your understanding of deploy and manage a microsoft 365 tenant. 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.
Your organization has a hybrid identity deployment with Microsoft Entra Connect. You have synchronized all on-premises Active Directory users to Microsoft Entra ID. You need to enable Microsoft Entra ID Password Protection to automatically block weak passwords. You have installed the Password Protection proxy on a server and registered it. You also need to enforce the password protection policy for on-premises users. What additional step is required?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Install the Password Protection DC agent on each domain controller.
The Password Protection DC agent is required on each domain controller to intercept and validate password changes against the Microsoft Entra ID Password Protection policy. Without this agent, the proxy server alone cannot enforce the policy for on-premises users, as the DC agent is the component that applies the password filter during password change operations.
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.
✓
Install the Password Protection DC agent on each domain controller.
Why this is correct
The DC agent enforces the policy on-premises.
Related concept
Read the scenario before looking for a memorised answer.
✗
Install the Password Protection proxy on all domain controllers.
Why it's wrong here
The proxy is already installed; it communicates with Microsoft Entra ID.
✗
Enable the password filter in the Microsoft Entra Connect configuration.
Why it's wrong here
The password filter is part of the DC agent, not Connect.
✗
Configure a Group Policy to require password complexity.
Why it's wrong here
Password Protection is separate from Group Policy.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume the proxy server alone enforces the policy, but the proxy only facilitates communication, while the DC agent is the enforcement point on each domain controller.
Detailed technical explanation
How to think about this question
The Password Protection DC agent uses a password filter DLL that intercepts password change requests via the NetValidatePasswordPolicy API, checking them against the global banned password list from Microsoft Entra ID. The proxy server acts as a relay to download the policy from Entra ID and distribute it to DC agents, but it does not perform the actual validation. In a real-world scenario, if the DC agent is missing, users can still set weak passwords like 'Password123' even though the proxy is registered and the policy is enabled in the tenant.
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 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 MS-102 question in full detail.
Deploy and manage a Microsoft 365 tenant — This question tests Deploy and manage a Microsoft 365 tenant — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Install the Password Protection DC agent on each domain controller. — The Password Protection DC agent is required on each domain controller to intercept and validate password changes against the Microsoft Entra ID Password Protection policy. Without this agent, the proxy server alone cannot enforce the policy for on-premises users, as the DC agent is the component that applies the password filter during password change operations.
What should I do if I get this MS-102 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.
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Question Discussion
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