The correct answer is to use Microsoft Entra Application Proxy to publish the legacy applications. This works because Application Proxy acts as a reverse proxy that can broker NTLM authentication for on-premises apps, allowing them to authenticate through cloud-only identity without requiring the legacy NTLM protocol to traverse the internet directly. On the MS-102 exam, this scenario tests your understanding of how to bridge cloud migration with legacy authentication requirements—a common trap is assuming that Cloud Sync, Pass-through Authentication, or Password Hash Sync can handle NTLM, but none of them do natively. Remember the key distinction: Cloud Sync is for syncing objects, not for proxying legacy auth; Application Proxy is the dedicated tool for publishing on-prem apps with NTLM support. Memory tip: "Proxy for legacy, Sync for identity"—if the app needs NTLM, think Application Proxy, not Cloud Sync.
MS-102 Practice Question: Implement and manage Microsoft Entra identity and access
This MS-102 practice question tests your understanding of implement and manage microsoft entra identity and access. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 environment with Microsoft Entra Connect. You are planning to migrate to cloud-only authentication using Microsoft Entra Cloud Sync. However, some legacy applications still require NTLM authentication. What should you do to ensure those applications can authenticate after the migration?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Microsoft Entra Application Proxy to publish the legacy applications
Option C is correct because Microsoft Entra Application Proxy can provide secure access to legacy on-premises apps and support NTLM. Option A is wrong because cloud sync does not support NTLM. Option B is wrong because PHS supports modern auth, not NTLM. Option D is wrong because PTA does not support NTLM directly.
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.
✓
Use Microsoft Entra Application Proxy to publish the legacy applications
Why this is correct
Application Proxy can handle NTLM authentication for published apps.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable pass-through authentication (PTA)
Why it's wrong here
PTA validates passwords against on-prem AD but does not support NTLM for legacy apps.
✗
Configure Microsoft Entra Cloud Sync with password hash sync
Why it's wrong here
Cloud sync syncs users but does not provide NTLM authentication for legacy apps.
✗
Deploy Microsoft Entra Password Protection
Why it's wrong here
Password Protection blocks weak passwords, not NTLM support.
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 MS-102 question in full detail.
Identify which MS-102 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 and manage Microsoft Entra identity and access — This question tests Implement and manage Microsoft Entra identity and access — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Microsoft Entra Application Proxy to publish the legacy applications — Option C is correct because Microsoft Entra Application Proxy can provide secure access to legacy on-premises apps and support NTLM. Option A is wrong because cloud sync does not support NTLM. Option B is wrong because PHS supports modern auth, not NTLM. Option D is wrong because PTA does not support NTLM directly.
What should I do if I get this MS-102 question wrong?
Identify which MS-102 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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