The answer is Attack surface reduction (ASR) rules, specifically rule GUID 9e6c4e1f-7d60-472f-ba1a-a39ef669e4b2, which is designed to block executable files from running in the Windows Temp folder. This is correct because ASR rules are a Microsoft Defender for Endpoint capability that proactively reduces the attack surface by controlling common malware entry points and persistence mechanisms, such as temporary folders where attackers often drop malicious executables. On the MS-102 exam, this topic tests your understanding of how to configure Defender for Endpoint policies to enforce security baselines, often appearing in scenario-based questions where you must choose between ASR rules, Windows Defender Firewall, or Application Control. A common trap is confusing ASR rules with Windows Defender Application Control (WDAC); remember that ASR targets specific behaviors like blocking executables from Temp folders, while WDAC controls which applications can run at all. Memory tip: think “ASR blocks the path, not the app”—the rule focuses on the folder location, not the file’s signature.
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.
An organization wants to prevent users from running executable files from the Windows Temp folder. Which Microsoft Defender for Endpoint capability should be configured?
ASR rules can block executables from running from common temporary folders, reducing the risk of malware execution.
B
Network protection
Why wrong: Network protection blocks outbound traffic to known malicious IPs or domains, not local file execution.
C
Exploit protection
Why wrong: Exploit protection applies mitigations to applications to prevent exploitation of vulnerabilities but does not block file execution from Temp.
D
Controlled folder access
Why wrong: Controlled folder access protects folders from modification by untrusted applications but does not prevent execution of files from Temp.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Attack surface reduction rules
Attack surface reduction (ASR) rules are a Microsoft Defender for Endpoint capability that can block executable files from running from specific locations, such as the Windows Temp folder. Rule GUID 9e6c4e1f-7d60-472f-ba1a-a39ef669e4b2 specifically targets this behavior by preventing executables and scripts from launching from temporary folders. This is the correct capability because ASR rules are designed to reduce the attack surface by controlling common malware entry points and persistence mechanisms.
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.
✓
Attack surface reduction rules
Why this is correct
ASR rules can block executables from running from common temporary folders, reducing the risk of malware execution.
Related concept
Read the scenario before looking for a memorised answer.
✗
Network protection
Why it's wrong here
Network protection blocks outbound traffic to known malicious IPs or domains, not local file execution.
✗
Exploit protection
Why it's wrong here
Exploit protection applies mitigations to applications to prevent exploitation of vulnerabilities but does not block file execution from Temp.
✗
Controlled folder access
Why it's wrong here
Controlled folder access protects folders from modification by untrusted applications but does not prevent execution of files from Temp.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Controlled folder access (which protects files from modification) with execution control, or they mistakenly think Network protection can block local file execution because it sounds like a broad security measure.
Detailed technical explanation
How to think about this question
ASR rules operate by hooking into the Windows kernel and monitoring process creation events via the Windows Filtering Platform (WFP) and the Microsoft Defender Antivirus engine. When a rule like 'Block executable files from running unless they meet a prevalence, age, or trusted list criterion' is enabled, it evaluates each executable launched from a path like %TEMP% against a cloud-based reputation check; if the file is not known-good, execution is blocked. In a real-world scenario, this rule is critical for stopping droppers that stage malware in the Temp folder before executing, a common technique used by Emotet and TrickBot.
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 MS-102 question in full detail.
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: Attack surface reduction rules — Attack surface reduction (ASR) rules are a Microsoft Defender for Endpoint capability that can block executable files from running from specific locations, such as the Windows Temp folder. Rule GUID 9e6c4e1f-7d60-472f-ba1a-a39ef669e4b2 specifically targets this behavior by preventing executables and scripts from launching from temporary folders. This is the correct capability because ASR rules are designed to reduce the attack surface by controlling common malware entry points and persistence mechanisms.
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.
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