The answer is Microsoft Defender for Identity (MDI), the correct choice because it is purpose-built to detect advanced identity attacks like Pass-the-Hash and Golden Ticket attacks against on-premises Active Directory. MDI achieves this by analyzing behavioral patterns and applying machine learning to spot anomalies such as unusual Kerberos ticket requests or NTLM authentication irregularities that indicate credential theft or ticket forgery. It also integrates directly with Microsoft Sentinel for centralized incident management, enabling automated response workflows. On the SC-900 exam, this question tests your understanding of how Microsoft’s security solutions map to specific attack types—a common trap is confusing Defender for Identity with Defender for Endpoint or Azure AD Identity Protection, which focus on different layers. Remember: if the attack targets on-premises AD with stolen hashes or forged tickets, think MDI. A helpful memory tip is “MDI = My Domain’s Identity,” reinforcing its role as the guardian of on-premises directory services.
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 uses Microsoft 365 Defender and wants to detect, investigate, and automatically respond to advanced identity-based attacks targeting on-premises Active Directory, such as Pass-the-Hash (PtH) and Golden Ticket attacks. They also need to integrate these alerts into Microsoft Sentinel for central incident management. Which Microsoft security solution provides these capabilities?
Defender for Identity is specifically designed to protect on-premises Active Directory from advanced identity attacks and provides automated investigation and response.
B
Microsoft Defender for Cloud Apps
Why wrong: Defender for Cloud Apps focuses on monitoring and controlling cloud application usage, not on-premises Active Directory attacks.
C
Microsoft Defender for Endpoint
Why wrong: Defender for Endpoint provides endpoint detection and response (EDR) for devices, not specialized protection for on-premises AD identity attacks.
D
Microsoft Defender for Office 365
Why wrong: Defender for Office 365 protects against threats in email and Office applications, not against on-premises Active Directory attacks.
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 Identity
Microsoft Defender for Identity (MDI) is the correct answer because it is specifically designed to detect, investigate, and automatically respond to advanced identity-based attacks targeting on-premises Active Directory, including Pass-the-Hash (PtH) and Golden Ticket attacks. It uses behavioral analytics and machine learning to identify suspicious activities such as anomalous Kerberos ticket requests and NTLM authentication anomalies. MDI also natively integrates with Microsoft Sentinel, allowing alerts to be ingested for central incident management.
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 Identity
Why this is correct
Defender for Identity is specifically designed to protect on-premises Active Directory from advanced identity attacks and provides automated investigation and response.
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 focuses on monitoring and controlling cloud application usage, not on-premises Active Directory attacks.
✗
Microsoft Defender for Endpoint
Why it's wrong here
Defender for Endpoint provides endpoint detection and response (EDR) for devices, not specialized protection for on-premises AD identity attacks.
✗
Microsoft Defender for Office 365
Why it's wrong here
Defender for Office 365 protects against threats in email and Office applications, not against on-premises Active Directory attacks.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may confuse Microsoft Defender for Identity with Microsoft Defender for Cloud Apps, assuming both handle identity threats, but only MDI specifically targets on-premises Active Directory attacks like PtH and Golden Ticket.
Detailed technical explanation
How to think about this question
MDI monitors network traffic to domain controllers using port mirroring or an agent, analyzing Kerberos and NTLM authentication protocols to detect techniques like PtH (where an attacker uses captured NTLM hashes) and Golden Ticket attacks (where forged Kerberos Ticket-Granting Tickets are created using the KRBTGT account hash). It can trigger automatic response actions, such as disabling a compromised user account or blocking a suspicious IP, and forwards alerts to Microsoft Sentinel via the Microsoft 365 Defender connector for unified incident management.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-900 question in full detail.
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 Identity — Microsoft Defender for Identity (MDI) is the correct answer because it is specifically designed to detect, investigate, and automatically respond to advanced identity-based attacks targeting on-premises Active Directory, including Pass-the-Hash (PtH) and Golden Ticket attacks. It uses behavioral analytics and machine learning to identify suspicious activities such as anomalous Kerberos ticket requests and NTLM authentication anomalies. MDI also natively integrates with Microsoft Sentinel, allowing alerts to be ingested for central incident management.
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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