PL-900 Practice Question: Demonstrate the capabilities of Microsoft Copilot Studio
A company has deployed a custom copilot built with Microsoft Copilot Studio to support the sales team. The copilot uses a SharePoint site containing product documentation and a public website for industry news as knowledge sources. The copilot is configured with anonymous access and is published to a demo page. Recently, the sales team has been using the copilot to answer customer questions, but they report that the copilot sometimes provides incorrect product specifications and cites sources that are not related to the company's products. The administrator needs to improve the accuracy and relevance of the copilot's responses while maintaining the ability to answer questions about industry news. What should the administrator do first?
⚠ Common exam trap
Watch out — candidates often think restricting access (authentication) or disabling generative AI are quick fixes, but the question specifically asks about improving accuracy and relevance while maintaining the ability to answer industry news, so the correct first step is to refine the knowledge sources, not to change access or disable the core AI functionality.
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
✓
Remove the public website as a knowledge source and add a more specific industry news source
The core issue is that the public website knowledge source is introducing irrelevant or incorrect information into the copilot's responses. By removing it and adding a more specific industry news source, the administrator directly addresses the source of inaccuracy while preserving the ability to answer industry news questions. This aligns with the principle that knowledge source quality directly impacts generative AI response relevance in Microsoft Copilot Studio.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Remove the public website as a knowledge source and add a more specific industry news source
Why this is correct
This ensures the copilot uses authoritative product data and relevant news.
- ✗
Enable Microsoft Entra ID authentication to restrict access
Why it's wrong here
Authentication controls access but doesn't improve answer relevance.
- ✗
Turn off Generative AI and use only manual topics
Why it's wrong here
Turning off Generative AI would prevent the copilot from answering any questions, not just improve accuracy.
- ✗
Add additional SharePoint sites with product specifications
Why it's wrong here
Adding more sources could increase confusion and incorrect answers.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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