- A
Microsoft Defender for Cloud Apps
Correct. Defender for Cloud Apps with Conditional Access App Control provides session-level monitoring and control for SaaS apps, enabling actions like blocking downloads.
- B
Microsoft Defender for Endpoint
Why wrong: Incorrect. Defender for Endpoint provides endpoint detection and response, but does not offer session-level controls for third-party SaaS applications.
- C
Microsoft Defender for Office 365
Why wrong: Incorrect. Defender for Office 365 protects email and collaboration workloads (Exchange, SharePoint, Teams), not general third-party SaaS applications.
- D
Microsoft Defender for Identity
Why wrong: Incorrect. Defender for Identity monitors on-premises Active Directory for identity-based attacks, not cloud SaaS app sessions.
Quick Answer
The answer is Microsoft Defender for Cloud Apps. This is correct because it offers session controls through Conditional Access App Control, which proxies the SaaS application traffic to enforce real-time policies. For the scenario described, the security team can configure a session policy to block file downloads to local drives on unmanaged devices and display a custom warning message, all without modifying the third-party application itself. On the SC-900 exam, this tests your understanding of how Microsoft’s security solutions map to specific use cases—here, distinguishing Defender for Cloud Apps from Microsoft Entra ID Conditional Access, which handles access decisions but not granular in-app session monitoring. A common trap is confusing it with Microsoft Purview, which focuses on data classification and compliance rather than real-time session control. Memory tip: think “session proxy” for Defender for Cloud Apps—it sits between the user and the app to watch and block actions like downloads.
SC-900 Practice Question: Describe the capabilities of Microsoft security solutions
This SC-900 practice question tests your understanding of describe the capabilities of microsoft security solutions. 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.
A company uses a third-party SaaS project management application. The security team wants to monitor and control user sessions when employees access the application from personal, unmanaged devices. Specifically, they want to block the download of files to local drives and display a warning message to the user if they attempt to download. Which Microsoft security solution should they deploy?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Defender for Cloud Apps
Microsoft Defender for Cloud Apps (formerly Microsoft Cloud App Security) is the correct solution because it provides session-level controls via Conditional Access App Control. This allows the security team to monitor and control user sessions in real-time, including blocking file downloads to unmanaged devices and displaying custom warning messages, by proxying the SaaS application traffic through Defender for Cloud Apps.
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.
- ✓
Microsoft Defender for Cloud Apps
Why this is correct
Correct. Defender for Cloud Apps with Conditional Access App Control provides session-level monitoring and control for SaaS apps, enabling actions like blocking downloads.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Microsoft Defender for Endpoint
Why it's wrong here
Incorrect. Defender for Endpoint provides endpoint detection and response, but does not offer session-level controls for third-party SaaS applications.
- ✗
Microsoft Defender for Office 365
Why it's wrong here
Incorrect. Defender for Office 365 protects email and collaboration workloads (Exchange, SharePoint, Teams), not general third-party SaaS applications.
- ✗
Microsoft Defender for Identity
Why it's wrong here
Incorrect. Defender for Identity monitors on-premises Active Directory for identity-based attacks, not cloud SaaS app sessions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Microsoft Defender for Cloud Apps with Microsoft Defender for Office 365, assuming all SaaS app protection falls under Office 365, but Defender for Cloud Apps is the cross-SaaS session control solution.
Detailed technical explanation
How to think about this question
Defender for Cloud Apps uses reverse proxy architecture to intercept user sessions when Conditional Access policies are triggered. It can enforce granular controls like blocking downloads by inspecting HTTP headers and MIME types, and inject custom JavaScript to display warning messages in the user's browser. This works even for unmanaged devices because the proxy operates at the application layer without requiring an agent on the device.
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 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.
What to study next
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FAQ
Questions learners often ask
What does this SC-900 question test?
Describe the capabilities of Microsoft security solutions — This question tests Describe the capabilities of Microsoft security solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Microsoft Defender for Cloud Apps — Microsoft Defender for Cloud Apps (formerly Microsoft Cloud App Security) is the correct solution because it provides session-level controls via Conditional Access App Control. This allows the security team to monitor and control user sessions in real-time, including blocking file downloads to unmanaged devices and displaying custom warning messages, by proxying the SaaS application traffic through Defender for Cloud Apps.
What should I do if I get this SC-900 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.
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Same concept, more angles
1 more ways this is tested on SC-900
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. A company uses a third-party SaaS CRM application. The security team needs to monitor user sessions in real-time when sales representatives access the CRM from personal, unmanaged devices. The goal is to prevent the download of sensitive customer data to local drives. The solution should block download actions and show a warning to the user. Which Microsoft security solution should the team deploy to enforce these session controls?
hard- ✓ A.Microsoft Defender for Cloud Apps
- B.Microsoft 365 Defender
- C.Microsoft Sentinel
- D.Microsoft Defender for Endpoint
Why A: Microsoft Defender for Cloud Apps (MDCA) provides session-level controls via its Conditional Access App Control feature. This allows real-time monitoring and control of user sessions in third-party SaaS apps like CRM, enabling actions such as blocking downloads and displaying warnings based on device compliance (e.g., unmanaged devices). The solution integrates with Azure AD Conditional Access to enforce these policies at the session layer without modifying the underlying SaaS application.
Last reviewed: Jun 11, 2026
This SC-900 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-900 exam.
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