- A
Create a data loss prevention (DLP) policy to prevent sharing of credentials.
Why wrong: DLP policies prevent data loss, not phishing attacks.
- B
Configure anti-spam policies to increase the spam confidence level.
Why wrong: Anti-spam policies do not protect against impersonation.
- C
Configure anti-phishing policies to protect users from impersonation of custom domains.
Anti-phishing policies can also protect against impersonation of your organization's domains.
- D
Configure anti-phishing policies to protect users from impersonation of internal users.
Anti-phishing policies can detect and protect against impersonation of users within your organization.
- E
Enable Safe Attachments for SharePoint, OneDrive, and Microsoft Teams.
Why wrong: Safe Attachments scans files for malware, not impersonation.
Quick Answer
The correct answer is to configure anti-phishing policies to protect users from impersonation of internal users and to protect against impersonation of custom domains. These two actions directly address the core mechanism of impersonation attacks, where attackers spoof a trusted sender’s display name or email domain to trick recipients. In Microsoft Defender for Office 365, the anti-phishing policy includes dedicated impersonation protection settings that analyze sender addresses and domains against a defined list of protected users and domains, blocking or redirecting suspicious messages before they reach the inbox. On the MS-102 exam, this question tests your ability to distinguish between security features: many candidates mistakenly choose Safe Attachments (which scans files) or anti-spam policies (which filter bulk mail), but impersonation is a unique phishing vector handled only by the anti-phishing policy’s impersonation settings. A common trap is confusing domain impersonation with domain spoofing—remember that impersonation targets the display name or a lookalike domain, not the actual email header. Memory tip: think “Who and Where”—protect the “who” (internal users) and the “where” (your custom domains) to block impersonation.
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.
You are configuring Microsoft Defender for Office 365. Which TWO actions should you take to protect users from phishing attacks that use impersonation?
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
Configure anti-phishing policies to protect users from impersonation of custom domains.
Options B and D are correct because anti-phishing policies can protect against impersonation of users and domains. Option A is wrong because Safe Attachments is for file scanning. Option C is wrong because anti-spam policies are for spam, not impersonation. Option E is wrong because DLP protects sensitive data, not from phishing.
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.
- ✗
Create a data loss prevention (DLP) policy to prevent sharing of credentials.
Why it's wrong here
DLP policies prevent data loss, not phishing attacks.
- ✗
Configure anti-spam policies to increase the spam confidence level.
Why it's wrong here
Anti-spam policies do not protect against impersonation.
- ✓
Configure anti-phishing policies to protect users from impersonation of custom domains.
Why this is correct
Anti-phishing policies can also protect against impersonation of your organization's domains.
Related concept
Static NAT maps one inside address to one outside address.
- ✓
Configure anti-phishing policies to protect users from impersonation of internal users.
Why this is correct
Anti-phishing policies can detect and protect against impersonation of users within your organization.
Related concept
Static NAT maps one inside address to one outside address.
- ✗
Enable Safe Attachments for SharePoint, OneDrive, and Microsoft Teams.
Why it's wrong here
Safe Attachments scans files for malware, not impersonation.
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 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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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.
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.
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Manage security and threats by using Microsoft Defender XDR — study guide chapter
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Manage security and threats by using Microsoft Defender XDR practice questions
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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 — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Configure anti-phishing policies to protect users from impersonation of custom domains. — Options B and D are correct because anti-phishing policies can protect against impersonation of users and domains. Option A is wrong because Safe Attachments is for file scanning. Option C is wrong because anti-spam policies are for spam, not impersonation. Option E is wrong because DLP protects sensitive data, not from phishing.
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
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Last reviewed: Jun 21, 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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