The correct answer is to create an OAuth app policy in Microsoft Defender for Cloud Apps to revoke the app. This policy directly targets unsanctioned OAuth apps that have already been granted consent, allowing you to block access and revoke the delegated permissions in one action, which a Conditional Access policy alone cannot do. On the MS-102 exam, this question tests your understanding of how Defender for Cloud Apps governs third-party OAuth integrations, often tripping candidates who confuse app discovery (which only identifies apps) with enforcement. A common trap is selecting a Conditional Access policy, but remember that CA blocks sign-in without removing the app’s existing token grants, leaving the OAuth app still authorized. To block an unsanctioned OAuth app with Defender for Cloud Apps, you must use the OAuth app policy to both revoke and block—think of it as “revoke to revoke, block to block.” Memory tip: OAuth app policies are the only tool that cuts the consent cord, not just the access line.
MS-102 Practice Question: Manage security and threats by using Microsoft Defender XDR
This MS-102 practice question tests your understanding of manage security and threats by using microsoft defender xdr. 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 organization uses Microsoft Defender for Cloud Apps and Microsoft Entra ID. You need to block access to a third-party cloud app that is not sanctioned. The app uses OAuth and users have already granted consent. 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
✓
Create an OAuth app policy in Microsoft Defender for Cloud Apps to revoke the app.
Option A is correct because an OAuth app policy in Defender for Cloud Apps can revoke permissions and block access. Option B is wrong because a Conditional Access policy can block access but does not revoke OAuth permissions. Option C is wrong because an app discovery policy only identifies apps. Option D is wrong because a session policy controls usage but does not block access after consent.
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.
✗
Create a Conditional Access policy in Microsoft Entra ID to block the app.
Why it's wrong here
Conditional Access can block sign-in but does not revoke OAuth permissions.
✗
Create a session policy in Microsoft Defender for Cloud Apps.
Why it's wrong here
Session policies control usage but require proxy configuration.
✓
Create an OAuth app policy in Microsoft Defender for Cloud Apps to revoke the app.
Why this is correct
OAuth app policies revoke permissions and block the app.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create an app discovery policy in Microsoft Defender for Cloud Apps.
Why it's wrong here
App discovery policies only identify apps.
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.
Manage security and threats by using Microsoft Defender XDR — This question tests Manage security and threats by using Microsoft Defender XDR — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create an OAuth app policy in Microsoft Defender for Cloud Apps to revoke the app. — Option A is correct because an OAuth app policy in Defender for Cloud Apps can revoke permissions and block access. Option B is wrong because a Conditional Access policy can block access but does not revoke OAuth permissions. Option C is wrong because an app discovery policy only identifies apps. Option D is wrong because a session policy controls usage but does not block access after consent.
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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