- A
Enable users to protect against impersonation
This setting allows you to define a list of specific users (e.g., executives) whose email addresses are protected from being impersonated in inbound emails. When impersonation is detected, the action defined in the policy is applied.
- B
Enable domains to protect against impersonation
Why wrong: This setting protects against impersonation of entire domains (e.g., contoso.com) but does not protect specific individual email addresses. It would not directly address user impersonation.
- C
Mailbox intelligence
Why wrong: Mailbox intelligence uses machine learning to identify normal email patterns and detect anomalous behavior, such as compromised accounts sending unusual emails. It does not prevent impersonation of specific users.
- D
Spoofed sender posture
Why wrong: Spoofed sender posture is part of the spoof intelligence feature that evaluates email senders based on SPF, DKIM, and DMARC authentication. It is not designed to protect against user impersonation attacks.
Quick Answer
The answer is to enable the 'Enable users to protect against impersonation' setting within the anti-phishing policy. This setting is correct because it allows administrators to define a specific list of high-value targets—such as C-suite executives—whose email display names and addresses are actively monitored by Defender for Office 365. When an inbound message attempts to spoof one of these protected users, the system analyzes the sender’s identity against the protected list and flags or quarantines the suspicious email, directly countering the impersonation attacks described in the scenario. On the MS-102 exam, this question tests your ability to distinguish user impersonation protection from domain impersonation or mailbox intelligence settings; a common trap is confusing this with the general 'Anti-impersonation protection' toggle, which alone does not protect specific individuals. Remember the memory tip: "Protect the people, not just the domain"—if the question mentions protecting specific executives, look for the user-based setting, not the domain-based one.
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. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is experiencing a significant number of phishing attempts that target high-level executives by impersonating their email addresses. The security team wants to configure protection against user impersonation in Microsoft Defender for Office 365. Which setting must be enabled in the anti-phishing policy to protect these specific users?
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
Enable users to protect against impersonation
Option A is correct because the 'Enable users to protect against impersonation' setting in an anti-phishing policy allows you to specify a list of users (such as high-level executives) whose email identities will be monitored for impersonation attempts. When enabled, Defender for Office 365 analyzes inbound messages for display name and email address matches against the protected users, and if a match is found with a suspicious sender, the message is flagged or quarantined. This directly addresses the scenario of attackers spoofing executive email addresses.
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.
- ✓
Enable users to protect against impersonation
Why this is correct
This setting allows you to define a list of specific users (e.g., executives) whose email addresses are protected from being impersonated in inbound emails. When impersonation is detected, the action defined in the policy is applied.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable domains to protect against impersonation
Why it's wrong here
This setting protects against impersonation of entire domains (e.g., contoso.com) but does not protect specific individual email addresses. It would not directly address user impersonation.
- ✗
Mailbox intelligence
Why it's wrong here
Mailbox intelligence uses machine learning to identify normal email patterns and detect anomalous behavior, such as compromised accounts sending unusual emails. It does not prevent impersonation of specific users.
- ✗
Spoofed sender posture
Why it's wrong here
Spoofed sender posture is part of the spoof intelligence feature that evaluates email senders based on SPF, DKIM, and DMARC authentication. It is not designed to protect against user impersonation attacks.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse 'user impersonation protection' with 'domain impersonation protection' or 'spoof intelligence,' but the question specifically asks for protection against impersonation of individual users, which requires the user-based setting, not domain-level or spoof-based controls.
Detailed technical explanation
How to think about this question
Under the hood, the 'Enable users to protect against impersonation' setting leverages a combination of display name similarity detection and email address matching (including exact and fuzzy matches) against the protected users list. When a message is detected as impersonating a protected user, Defender for Office 365 applies the configured action (e.g., move to quarantine, redirect to another address, or deliver with modified headers). A subtle behavior is that this protection also considers the sender's display name alone, even if the email address does not match, which is a common tactic in CEO fraud attacks.
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
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FAQ
Questions learners often ask
What does this MS-102 question test?
Manage security and threats by using Microsoft Defender XDR — This question tests Manage security and threats by using Microsoft Defender XDR — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable users to protect against impersonation — Option A is correct because the 'Enable users to protect against impersonation' setting in an anti-phishing policy allows you to specify a list of users (such as high-level executives) whose email identities will be monitored for impersonation attempts. When enabled, Defender for Office 365 analyzes inbound messages for display name and email address matches against the protected users, and if a match is found with a suspicious sender, the message is flagged or quarantined. This directly addresses the scenario of attackers spoofing executive email addresses.
What should I do if I get this MS-102 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.
About these practice questions
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Last reviewed: Jun 11, 2026
This MS-102 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 MS-102 exam.
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