- A
Microsoft Defender for Office 365
Why wrong: Defender for Office 365 protects email and collaboration tools from phishing and malware, but does not natively manage endpoint device isolation or file rollback.
- B
Microsoft Defender for Endpoint
Defender for Endpoint provides EDR, threat hunting, automated investigation, and remediation including device isolation and file rollback for ransomware.
- C
Microsoft Defender for Cloud Apps
Why wrong: Defender for Cloud Apps is a cloud access security broker (CASB) that protects cloud apps and discovers shadow IT, not endpoint malware protection.
- D
Microsoft Defender for Cloud
Why wrong: Defender for Cloud provides cloud security posture management and workload protection for multicloud environments, but does not directly manage endpoint ransomware recovery.
Quick Answer
The answer is Microsoft Defender for Endpoint (MDE). This solution is correct because it combines real-time endpoint detection and response (EDR) with automated investigation and remediation, enabling it to detect ransomware behavior instantly, automatically isolate compromised Windows servers and desktops, and roll back encrypted files using Volume Shadow Copy technology. On the SC-900 exam, this question tests your understanding of how MDE’s attack surface reduction rules and automated response capabilities directly address ransomware protection requirements, often appearing as a scenario where you must distinguish MDE from broader tools like Microsoft 365 Defender or Azure Sentinel. A common trap is choosing a general security solution that lacks device isolation or file rollback; remember that MDE is the only Microsoft tool with built-in ransomware recovery via previous versions. Memory tip: Think “MDE = Detect, Isolate, Rollback” for the three key ransomware defenses.
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 security operations team needs a solution that can detect and stop ransomware attacks on Windows servers and desktops in real time. They also want the ability to automatically isolate affected devices and, if necessary, roll back files modified by ransomware using a built-in recovery feature. Which Microsoft security solution provides these capabilities?
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 Endpoint
Microsoft Defender for Endpoint (MDE) provides real-time detection and automated response to ransomware attacks on Windows servers and desktops. Its built-in attack surface reduction rules, endpoint detection and response (EDR), and automated investigation and remediation capabilities allow automatic device isolation. Additionally, MDE includes a file recovery feature that leverages Volume Shadow Copy to roll back files modified by ransomware, meeting all stated requirements.
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 Office 365
Why it's wrong here
Defender for Office 365 protects email and collaboration tools from phishing and malware, but does not natively manage endpoint device isolation or file rollback.
- ✓
Microsoft Defender for Endpoint
Why this is correct
Defender for Endpoint provides EDR, threat hunting, automated investigation, and remediation including device isolation and file rollback for ransomware.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Microsoft Defender for Cloud Apps
Why it's wrong here
Defender for Cloud Apps is a cloud access security broker (CASB) that protects cloud apps and discovers shadow IT, not endpoint malware protection.
- ✗
Microsoft Defender for Cloud
Why it's wrong here
Defender for Cloud provides cloud security posture management and workload protection for multicloud environments, but does not directly manage endpoint ransomware recovery.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Microsoft Defender for Cloud (a cloud workload protection tool) with Microsoft Defender for Endpoint (an endpoint detection and response tool), failing to recognize that only MDE provides the specific combination of real-time endpoint protection, automated device isolation, and built-in file rollback for Windows servers and desktops.
Detailed technical explanation
How to think about this question
Under the hood, MDE uses behavioral sensors and machine learning models to detect ransomware patterns, such as rapid file encryption or suspicious process behavior. When a device is isolated, MDE blocks all inbound and outbound network traffic except to the Defender service, effectively containing the threat. The file rollback feature relies on Volume Shadow Copy Service (VSS) snapshots, which MDE can trigger to restore files to their pre-encryption state, even if the attacker has deleted the shadow copies.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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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 Endpoint — Microsoft Defender for Endpoint (MDE) provides real-time detection and automated response to ransomware attacks on Windows servers and desktops. Its built-in attack surface reduction rules, endpoint detection and response (EDR), and automated investigation and remediation capabilities allow automatic device isolation. Additionally, MDE includes a file recovery feature that leverages Volume Shadow Copy to roll back files modified by ransomware, meeting all stated requirements.
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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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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