The answer is session policy. This is the correct choice because Microsoft Defender for Cloud Apps session policies leverage a reverse proxy to intercept and inspect user traffic to cloud apps in real time, allowing granular control over actions like file uploads. By configuring a session policy with the "Control file upload" action, an administrator can block uploads to unsanctioned cloud storage apps such as personal Dropbox or Google Drive from managed Windows devices, fulfilling the exact requirement. On the MS-102 exam, this question tests your understanding of how Defender for Cloud Apps enforces real-time access and data protection policies, often distinguishing session policies from app discovery or access policies. A common trap is confusing session policies with app governance or conditional access policies, which lack the reverse proxy’s real-time file control. Remember the mnemonic “S.P.U.D.”—Session Policy for Uploads to Unsanctioned Devices—to recall that session policies are the tool for blocking file uploads to unsanctioned apps.
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.
A security administrator wants to prevent users from uploading files to unsanctioned cloud storage apps (e.g., personal Dropbox or Google Drive) from managed Windows devices. The solution must use a reverse proxy to control file uploads in real time. Which Microsoft Defender for Cloud Apps feature should the administrator configure?
Why wrong: App discovery identifies cloud apps used in the organization but does not control uploads.
B
Access policy
Why wrong: Access policies control access (allow/block) to cloud apps via Conditional Access, but do not provide session-level control like blocking uploads.
C
Session policy
Session policies use reverse proxy to control activities within a session, such as blocking uploads, downloads, or copy-paste.
D
Activity policy
Why wrong: Activity policies trigger alerts based on activities but do not enforce real-time blocking via proxy.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Session policy
Session policy in Microsoft Defender for Cloud Apps uses reverse proxy capabilities to monitor and control user activities in real time. When configured with the 'Control file upload' action, it can block or restrict uploads to unsanctioned cloud storage apps like personal Dropbox or Google Drive from managed Windows devices, meeting the requirement exactly.
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.
✗
App discovery policy
Why it's wrong here
App discovery identifies cloud apps used in the organization but does not control uploads.
✗
Access policy
Why it's wrong here
Access policies control access (allow/block) to cloud apps via Conditional Access, but do not provide session-level control like blocking uploads.
✓
Session policy
Why this is correct
Session policies use reverse proxy to control activities within a session, such as blocking uploads, downloads, or copy-paste.
Related concept
Read the scenario before looking for a memorised answer.
✗
Activity policy
Why it's wrong here
Activity policies trigger alerts based on activities but do not enforce real-time blocking via proxy.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing session policies (real-time reverse proxy control) with access policies (pre-session conditional access), leading candidates to choose access policy because it also uses Conditional Access, but it cannot inspect or block file uploads within an active session.
Detailed technical explanation
How to think about this question
Session policies leverage the Defender for Cloud Apps reverse proxy to intercept HTTP/HTTPS traffic from managed devices, allowing granular control over file uploads by inspecting MIME types, file names, and content. The proxy integrates with Azure AD Conditional Access to route traffic through the service, enabling real-time actions like 'Block' or 'Protect' (e.g., applying sensitivity labels) on uploads to unsanctioned apps. This differs from access policies, which only evaluate sign-in risk or device compliance before session initiation.
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 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 MS-102 question in full detail.
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: Session policy — Session policy in Microsoft Defender for Cloud Apps uses reverse proxy capabilities to monitor and control user activities in real time. When configured with the 'Control file upload' action, it can block or restrict uploads to unsanctioned cloud storage apps like personal Dropbox or Google Drive from managed Windows devices, meeting the requirement exactly.
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.
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.