The correct answer is to create a playbook that performs all three actions and run it as the automation rule action. This is because Microsoft Defender XDR automation rules are designed to trigger a single action per rule, so to automate incident response with a playbook that isolates the device, disables the account, and resets the password, you must combine those steps into one custom playbook—typically built using Microsoft Sentinel or Logic Apps. On the MS-102 exam, this question tests your understanding of the limitations of Defender XDR automation rules versus the multi-step orchestration capabilities of playbooks. A common trap is assuming you can configure multiple incident actions directly in a single automation rule, but the platform only supports one action per trigger. Remember the memory tip: “One rule, one action; for multiple steps, a playbook’s your faction.”
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.
Contoso uses Microsoft Defender XDR and has a Microsoft 365 E5 license. The security team wants to automate incident response when a user is compromised. They create a custom automation rule in the Microsoft 365 Defender portal. The rule should automatically isolate the user's device, disable the user account, and reset the user's password. Which action type should they configure in the rule?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a playbook that performs all three actions and run it as the automation rule action.
In Microsoft Defender XDR automation rules, you can define actions that trigger playbooks. To perform multiple actions like isolate device, disable account, and reset password, you need to use Microsoft Sentinel playbooks (or Logic Apps) because Defender XDR automation rules only support a single action per trigger. However, with a custom playbook, you can combine multiple steps. Option B is correct because a playbook can include multiple actions. Option A is wrong because an automation rule only supports one action. Option C is wrong because incident actions are limited. Option D is wrong because a webhook would require external orchestration.
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.
✓
Create a playbook that performs all three actions and run it as the automation rule action.
Why this is correct
A playbook can orchestrate multiple steps.
Related concept
Read the scenario before looking for a memorised answer.
✗
Select 'Isolate device' as the incident action.
Why it's wrong here
An automation rule can only have one action.
✗
Configure a webhook to call an external API that performs the actions.
Why it's wrong here
A webhook is an action, but it would require external API logic; a playbook is simpler.
✗
Use the 'Run script' action and provide a PowerShell script.
Why it's wrong here
Automation rules do not support running scripts directly.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this MS-102 question in full detail.
Identify which MS-102 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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: Create a playbook that performs all three actions and run it as the automation rule action. — In Microsoft Defender XDR automation rules, you can define actions that trigger playbooks. To perform multiple actions like isolate device, disable account, and reset password, you need to use Microsoft Sentinel playbooks (or Logic Apps) because Defender XDR automation rules only support a single action per trigger. However, with a custom playbook, you can combine multiple steps. Option B is correct because a playbook can include multiple actions. Option A is wrong because an automation rule only supports one action. Option C is wrong because incident actions are limited. Option D is wrong because a webhook would require external orchestration.
What should I do if I get this MS-102 question wrong?
Identify which MS-102 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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