The correct answer is that Microsoft Defender for Identity can identify lateral movement paths and monitor domain controller activities. These two capabilities stem from Defender for Identity’s role as a cloud-based security solution that uses Active Directory signals to detect advanced threats. Lateral movement path identification works by mapping how an attacker could move from a compromised account to a high-value asset, while domain controller monitoring tracks suspicious authentication and replication behavior. On the MS-102 exam, this question tests your understanding of Defender for Identity’s specific scope—it is a threat detection tool, not a prevention or management tool. A common trap is confusing it with Microsoft Entra ID Protection or Intune: Defender for Identity does not block sign-ins (that is Conditional Access), scan files, or manage endpoints. Remember the mnemonic “LAD—Lateral movement, Active Directory monitoring, and Detection only”—if an answer involves blocking, scanning, or managing, it belongs to a different service.
MS-102 Practice Question: Manage security and threats by using Microsoft Defender XDR
This MS-102 practice question tests your understanding of manage security and threats by using microsoft defender xdr. 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.
Which TWO actions can be performed by Microsoft Defender for Identity? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Monitor domain controller activities and behavior.
Defender for Identity identifies compromised accounts and lateral movement paths. Option A (identify lateral movement) and Option D (monitor domain controller activities) are correct. Option B is wrong because Defender for Identity does not block sign-ins; that is done by Conditional Access. Option C is wrong because it does not scan files. Option E is wrong because it does not manage endpoints.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Manage firewall rules on endpoints.
Why it's wrong here
Firewall management is part of Defender for Endpoint.
✓
Monitor domain controller activities and behavior.
Static NAT maps one inside address to one outside address.
✓
Identify lateral movement paths in your network.
Why this is correct
Defender for Identity can detect lateral movement.
Related concept
Static NAT maps one inside address to one outside address.
✗
Scan files for malware in real time.
Why it's wrong here
File scanning is done by Defender for Endpoint.
✗
Block sign-in attempts from malicious IP addresses.
Why it's wrong here
Blocking sign-ins is done by Conditional Access.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 MS-102 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related MS-102 NAT questions on configuration and troubleshooting.
Manage security and threats by using Microsoft Defender XDR — This question tests Manage security and threats by using Microsoft Defender XDR — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Monitor domain controller activities and behavior. — Defender for Identity identifies compromised accounts and lateral movement paths. Option A (identify lateral movement) and Option D (monitor domain controller activities) are correct. Option B is wrong because Defender for Identity does not block sign-ins; that is done by Conditional Access. Option C is wrong because it does not scan files. Option E is wrong because it does not manage endpoints.
What should I do if I get this MS-102 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related MS-102 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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. A company is implementing Microsoft Defender for Identity (MDI) to protect its on-premises Active Directory environment. The security team needs to ensure that MDI can monitor all domain controllers. They have installed the MDI sensor on all domain controllers. However, they notice that some suspicious activities are not being detected. Which additional configuration should the team verify to ensure comprehensive coverage?
medium
✓ A.Configure port mirroring or network tap to ensure the sensor can see all relevant network traffic.
B.Integrate Microsoft Defender for Cloud Apps with MDI.
C.Install Azure AD Connect Health on domain controllers.
D.Enable auditing on domain controllers and forward logs to Microsoft Sentinel.
Why A: Option C is correct because MDI requires port mirroring or a network tap to capture network traffic to and from domain controllers. Without proper network traffic configuration, some activities may not be detected. Option A is wrong because Event log collection is not required; MDI uses its own sensor. Option B is wrong because Azure AD Connect Health is not related to MDI. Option D is wrong because Defender for Cloud Apps integration is optional.
Variation 2. You are configuring Microsoft Defender for Identity to monitor on-premises Active Directory. You need to ensure that honeytoken accounts are configured to detect attackers attempting to use them. What is a honeytoken account?
easy
A.A service account used for application authentication
B.A disabled user account that cannot be used for sign-in
✓ C.A fake user account created to attract attackers
D.A real user account with high privileges used for monitoring
Why C: Option B is correct because honeytoken accounts are fake accounts used to detect attackers. Option A is wrong because they are not real. Option C is wrong because they are not service accounts. Option D is wrong because they are not disabled.
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Question Discussion
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