SC-200 Manage a security operations environment Practice Question
Your organization uses Microsoft Defender XDR incident queue. You want to automatically assign incidents related to a specific campaign to a dedicated SOC group. What should you create?
⚠ Common exam trap
A common mix-up: candidates confuse Microsoft Defender XDR's custom detection rules with Microsoft Sentinel's automation rules, but the question explicitly references the Defender XDR incident queue, not Sentinel.
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
✓
A custom detection rule in Microsoft Defender XDR that includes an incident assignment action.
Microsoft Defender XDR allows you to create custom detection rules that can include automated incident assignment actions. This enables you to automatically assign incidents related to a specific campaign to a dedicated SOC group directly within the Defender XDR incident queue, without relying on external tools or manual processes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
A standard rule in Microsoft Defender for Endpoint.
Why it's wrong here
Standard rules in Microsoft Defender for Endpoint are the built-in, predefined detection logic that generates alerts for known threat patterns. These rules cannot be customized to perform an automatic incident assignment action; they lack the configuration options required to set an owner or group. Therefore, although they are part of the Defender XDR incident pipeline, they do not provide the mechanism for automatic assignment.
- ✗
An automation rule in Microsoft Sentinel.
Why it's wrong here
Automation rules in Microsoft Sentinel are designed to manage and orchestrate incident workflows only within the Sentinel workspace, such as for Azure resources or SaaS apps consuming Sentinel analytics. They do not apply to or operate on Defender XDR incidents, which are managed in the Microsoft 365 Defender portal and have their own independent automation and assignment capabilities. Therefore, a Sentinel automation rule cannot be used to assign a Defender XDR incident.
- ✓
A custom detection rule in Microsoft Defender XDR that includes an incident assignment action.
Why this is correct
A custom detection rule in Microsoft Defender XDR is the correct mechanism because it allows you to define a KQL-based query and, in the rule configuration, specify an incident assignment action. When the detection fires and generates an incident, that action automatically assigns the incident to a designated group (or in some cases an individual). This is the officially supported way to automate incident assignment in the Defender XDR incident queue, ensuring every generated incident has an owner from the outset.
- ✗
A custom role in Microsoft Defender XDR.
Why it's wrong here
Custom roles in Microsoft Defender XDR define permissions and access controls via role-based access control (RBAC), determining which users can view or modify incidents, not what happens to an incident when it is created. They do not contain any logic for automatically assigning incidents; assignment is a separate action performed manually by a user or automatically via a custom detection rule. Thus, a custom role alone cannot cause an incident to be assigned.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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