PL-900 Practice Question: Demonstrate the capabilities of Microsoft Copilot Studio
A company has a copilot built with Microsoft Copilot Studio that answers HR policy questions by using a SharePoint knowledge source. Users report that the copilot sometimes gives answers that are not in the policy documents. The maker must reduce these ungrounded responses while still allowing the copilot to answer from the approved SharePoint content. What should the maker do?
⚠ Common exam trap
The trap here is believing that making the copilot more creative or adding more sources will improve accuracy, when the real fix is restricting it to the approved knowledge source.
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
✓
Set the generative answers node to use only the configured SharePoint knowledge source and disable general knowledge.
To reduce ungrounded responses, the maker should restrict the generative answers node to the approved SharePoint knowledge source and disable general knowledge. This ensures the copilot answers from the HR policy documents rather than from broader model knowledge. Disabling generative answers entirely, adding a public website source, or increasing creativity do not constrain the copilot to the approved content.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Set the generative answers node to use only the configured SharePoint knowledge source and disable general knowledge.
Why this is correct
In Microsoft Copilot Studio, generative answers can be configured to use specific knowledge sources. Disabling general knowledge and restricting the node to the SharePoint source prevents the copilot from drawing on outside information, which reduces ungrounded responses. This keeps the copilot answering from the approved HR policy content while preserving natural-language answers.
- ✗
Increase the copilot's creativity setting so it can better interpret the policy documents.
Why it's wrong here
Creativity settings influence how generative responses are composed, but increasing creativity tends to produce more varied and potentially less grounded answers. It does not restrict the copilot to the approved SharePoint content. The goal is to reduce ungrounded responses, so this change works against the requirement.
- ✗
Add a second knowledge source that contains a copy of the HR policies in a public website.
Why it's wrong here
Adding a public website copy does not reduce ungrounded responses and may introduce content that is not approved. The requirement is to constrain answers to the approved SharePoint content, not to add more sources. This change could actually increase the risk of answers that are not in the official policy documents.
- ✗
Disable generative answers and build a manual topic for every possible HR question.
Why it's wrong here
Disabling generative answers and manually authoring every HR question removes the flexibility of natural-language answering and is not scalable. It also does not directly address the grounding issue, because the problem is that the copilot is answering outside the approved content. A better approach is to constrain the generative answers to the approved knowledge source.
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Microsoft exam blueprint
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