The answer is to unsanction the app and create a session policy to block it in Microsoft Defender for Cloud Apps. This works because unsanctioning an app marks it as prohibited in the Cloud Discovery dashboard, while a session policy enforces real-time blocking by intercepting traffic via the Defender for Cloud Apps reverse proxy, preventing any access to the high-risk cloud storage app. On the Microsoft Cybersecurity Architect exam, this tests your ability to distinguish between Defender for Cloud Apps’ native app governance and Entra ID Conditional Access, which controls sign-in but cannot block specific app usage—a common trap where candidates confuse policy layers. Remember that unsanctioning alone only tags the app; you must pair it with a session policy to actively block traffic. Memory tip: “Unsanction tags, session blocks—both are needed to stop the clock.”
SC-100 Practice Question: Design security solutions for applications and data
This SC-100 practice question tests your understanding of design security solutions for applications and data. 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 company uses Microsoft Defender for Cloud Apps to discover and control shadow IT. You need to block the use of a newly discovered unsanctioned cloud storage app that poses a high risk. 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
✓
In Defender for Cloud Apps, unsanction the app and create a session policy to block it
Option A is correct because Defender for Cloud Apps allows you to sanction/unsanction apps and create access policies to block unsanctioned apps. Option B is wrong because Conditional Access policies in Entra ID control access but not app blocking. Option C is wrong because Intune compliance policies manage device compliance. Option D is wrong because Defender for Cloud Apps can block apps 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.
✓
In Defender for Cloud Apps, unsanction the app and create a session policy to block it
Why this is correct
Unsanctioning marks the app as blocked; session policy enforces the block.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a Conditional Access policy in Microsoft Entra ID to block the app
Why it's wrong here
Conditional Access can restrict access but not block app usage entirely.
✗
Use Microsoft Intune to set a compliance policy that blocks the app
Why it's wrong here
Intune manages device compliance, not cloud app blocking.
✗
Add the app to the blocked list in Microsoft Defender for Cloud Apps
Why it's wrong here
Just adding to a list does not enforce blocking; you need a policy.
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 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 SC-100 question in full detail.
Identify which SC-100 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.
Design security solutions for applications and data — This question tests Design security solutions for applications and data — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: In Defender for Cloud Apps, unsanction the app and create a session policy to block it — Option A is correct because Defender for Cloud Apps allows you to sanction/unsanction apps and create access policies to block unsanctioned apps. Option B is wrong because Conditional Access policies in Entra ID control access but not app blocking. Option C is wrong because Intune compliance policies manage device compliance. Option D is wrong because Defender for Cloud Apps can block apps directly.
What should I do if I get this SC-100 question wrong?
Identify which SC-100 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 →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Your organization uses Microsoft Defender for Cloud Apps to monitor shadow IT. You discover that employees are using a third-party file sharing app that is not sanctioned. The security team wants to block access to this app from managed devices and require authentication for unmanaged devices. You need to configure the appropriate controls in Defender for Cloud Apps. What should you do?
medium
A.Create a session policy that monitors file uploads to the app.
B.Create an app governance policy to restrict the app's permissions.
✓ C.Create an access policy to block the app on unmanaged devices and require authentication on managed devices.
D.Configure a DLP policy to prevent sharing of sensitive data through the app.
Why C: Option C is correct because it uses access policies to block unmanaged devices and require authentication, which aligns with the requirement. Option A is wrong because session policies monitor but do not block. Option B is wrong because app governance policies manage app permissions. Option D is wrong because DLP policies focus on data protection.
Variation 2. Your organization uses Microsoft Defender for Cloud Apps. You need to detect and prevent the use of unsanctioned cloud apps. The solution should generate alerts when users access high-risk apps and block access to very high-risk apps. Which three actions should you take? (Choose three.)
medium
A.Configure Conditional Access policies in Microsoft Entra ID to block unsanctioned apps
✓ B.Unsanction high-risk apps using the app catalog
✓ C.Create a session or access policy to block unsanctioned apps
✓ D.Enable Cloud Discovery in Defender for Cloud Apps to discover app usage
E.Create a DLP policy to prevent data upload to unsanctioned apps
Why B: Options A, C, and D are correct because to detect and block unsanctioned apps, you need to discover them via Cloud Discovery, sanction or unsanction them, and create policies to block unsanctioned apps. Option B is wrong because Conditional Access policies are for identity, not app blocking. Option E is wrong because DLP policies are for data protection, not app control.
Last reviewed: Jun 21, 2026
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This SC-100 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 SC-100 exam.
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