The answer is to create a file policy in Microsoft Defender for Cloud Apps with a governance action to remove external users. This configuration is correct because file policies are specifically designed to scan and enforce automated actions on stored files, such as blocking external file sharing to untrusted domains by stripping external collaborators, while leaving internal sharing untouched. On the MS-102 exam, this tests your understanding of how Defender for Cloud Apps uses content inspection and governance actions to enforce data loss prevention, with a common trap being to confuse file policies with session or access policies, which control real-time access rather than automatic blocking of sharing. A helpful memory tip is to think of file policies as the “janitor” that cleans up shared files after the fact, while session policies are the “bouncer” that monitors behavior in real time.
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 has deployed Microsoft Defender for Cloud Apps. You need to ensure that all external file sharing to untrusted domains is automatically blocked. The solution must not affect internal sharing. 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 a file policy in Microsoft Defender for Cloud Apps with a governance action to remove external users.
Option A is correct because file policies in Defender for Cloud Apps can detect and automatically block sharing to untrusted domains. Option B is wrong because session policies control real-time access but do not automatically block file sharing. Option C is wrong because access policies control access conditions but not file sharing actions. Option D is wrong because app connectors provide visibility but do not enforce automatic blocking of file sharing.
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 an access policy in Microsoft Defender for Cloud Apps to block access from untrusted domains.
Why it's wrong here
Access policies control access to apps but not file sharing actions.
✓
Create a file policy in Microsoft Defender for Cloud Apps with a governance action to remove external users.
Why this is correct
File policies can automatically remove external users from shared files based on domain conditions.
Related concept
Read the scenario before looking for a memorised answer.
✗
Configure an app connector for the cloud app to enforce DLP policies.
Why it's wrong here
App connectors provide visibility but require additional policies to enforce blocking.
✗
Create a session policy in Microsoft Defender for Cloud Apps to monitor external sharing.
Why it's wrong here
Session policies monitor and control user sessions but do not automatically block file sharing.
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 a file policy in Microsoft Defender for Cloud Apps with a governance action to remove external users. — Option A is correct because file policies in Defender for Cloud Apps can detect and automatically block sharing to untrusted domains. Option B is wrong because session policies control real-time access but do not automatically block file sharing. Option C is wrong because access policies control access conditions but not file sharing actions. Option D is wrong because app connectors provide visibility but do not enforce automatic blocking of file sharing.
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.
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 MS-102 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 MS-102 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.