Question 899 of 1,411

Describe the capabilities of Microsoft security solutions →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is Microsoft Defender for Identity (MDI). This cloud-based security solution is specifically designed for on-premises Active Directory threat detection, using behavioral analytics and machine learning to profile user and entity behavior and identify advanced attacks like lateral movement, reconnaissance, and credential theft. On the SC-900 exam, this question tests your ability to match security solutions to their core functions—a common trap is confusing Defender for Identity with Azure AD Identity Protection, but remember that MDI focuses on on-premises AD signals and techniques like Pass-the-Hash, DCSync, and Kerberoasting without needing agents on domain controllers. A helpful memory tip: think of MDI as the “on-premises identity watchdog” that catches lateral hops and credential abuse, while Azure AD Identity Protection handles cloud-based risky sign-ins.

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 analyst needs to detect and investigate compromised identities in on-premises Active Directory. They want to monitor for lateral movement, reconnaissance, and credential theft using behavioral analytics. Which Microsoft security solution is designed specifically for this purpose?

Question 1mediummultiple choice

Full question →

A
Microsoft Defender for Office 365
Why wrong: This solution protects against threats in email, links, and collaboration tools, not specifically on-premises Active Directory identity attacks.
B
Microsoft Defender for Cloud
Why wrong: Defender for Cloud provides security posture management and threat protection for cloud workloads, not specialized identity threat detection for on-premises AD.
C
Microsoft Defender for Identity
Defender for Identity uses behavioral analytics and integrates with on-premises AD to detect compromised identities, lateral movement, and other attack patterns.
D
Microsoft Sentinel
Why wrong: Sentinel is a cloud-native SIEM and SOAR platform that can ingest logs from many sources, but it is not a dedicated identity threat detection solution for on-premises AD.

Full breakdown with real-world context →

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 Identity

Microsoft Defender for Identity (MDI) is a cloud-based security solution that leverages on-premises Active Directory signals to identify, detect, and investigate advanced threats like lateral movement, reconnaissance, and credential theft. It uses behavioral analytics and machine learning to profile user and entity behavior, alerting on suspicious activities such as Pass-the-Hash, DCSync, and Kerberoasting without requiring agents on domain controllers.

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
This solution protects against threats in email, links, and collaboration tools, not specifically on-premises Active Directory identity attacks.
✗
Microsoft Defender for Cloud
Why it's wrong here
Defender for Cloud provides security posture management and threat protection for cloud workloads, not specialized identity threat detection for on-premises AD.
✓
Microsoft Defender for Identity
Why this is correct
Defender for Identity uses behavioral analytics and integrates with on-premises AD to detect compromised identities, lateral movement, and other attack patterns.
Related concept
Read the scenario before looking for a memorised answer.
✗
Microsoft Sentinel
Why it's wrong here
Sentinel is a cloud-native SIEM and SOAR platform that can ingest logs from many sources, but it is not a dedicated identity threat detection solution for on-premises AD.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse Microsoft Defender for Identity with Microsoft Sentinel, assuming Sentinel's SIEM capabilities automatically cover identity-based behavioral analytics, but Sentinel lacks the native, agentless Active Directory behavioral profiling that MDI provides.

Detailed technical explanation

How to think about this question

MDI works by integrating with on-premises Active Directory via a sensor installed on domain controllers, which captures network traffic (e.g., Kerberos, NTLM, LDAP) and Windows Event Logs (e.g., 4624, 4672, 4776). It then applies deterministic detection algorithms and machine learning models to identify anomalies such as abnormal service ticket requests (Kerberoasting) or replication requests from non-domain controllers (DCSync). In a real-world scenario, MDI can detect a compromised account that performs a DCSync attack by flagging the unusual use of the DRSUAPI RPC call from a non-DC machine.

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

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 Identity — Microsoft Defender for Identity (MDI) is a cloud-based security solution that leverages on-premises Active Directory signals to identify, detect, and investigate advanced threats like lateral movement, reconnaissance, and credential theft. It uses behavioral analytics and machine learning to profile user and entity behavior, alerting on suspicious activities such as Pass-the-Hash, DCSync, and Kerberoasting without requiring agents on domain controllers.

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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