PL-900 Practice Question: Describe the business value of Microsoft Power Platform
You are the Power Platform administrator for a large enterprise with multiple departments. The HR department uses a Power Apps canvas app to manage employee onboarding. The app is connected to Dataverse and includes a flow that sends a welcome email via Power Automate. Recently, the IT security team mandated that all Power Platform solutions must use Microsoft Entra ID for authentication and that sensitive data (e.g., social security numbers) must be encrypted at rest. The HR app currently uses Dataverse's default encryption. Additionally, the HR team wants to extend the app to external contractors who do not have Microsoft Entra ID accounts. They need to be able to submit their personal information through a secure web form. You need to design a solution that meets security requirements and allows external access. What should you do?
⚠ Common exam trap
It's easy for candidates to confuse Microsoft Entra ID B2B collaboration (which requires guest accounts in the tenant) with Microsoft Entra External ID (which supports external identities without requiring Microsoft Entra ID accounts), leading them to select Option C instead of the correct Power Pages solution.
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
✓
Enable customer-managed encryption key (CMEK) for Dataverse, and create a Power Pages site with Microsoft Entra External ID authentication for external contractors.
It addresses both security requirements: customer-managed encryption key (CMEK) for Dataverse ensures sensitive data like social security numbers is encrypted at rest with a key controlled by the enterprise, meeting the IT security mandate. Additionally, creating a Power Pages site with Microsoft Entra External ID authentication allows external contractors without Microsoft Entra ID accounts to authenticate via social or email-based identities, enabling secure submission of personal information through a web form while maintaining compliance.
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 SharePoint list for external contractors to submit data, and use Power Automate to send emails.
Why it's wrong here
SharePoint does not provide the same level of encryption control as Dataverse with CMEK.
- ✓
Enable customer-managed encryption key (CMEK) for Dataverse, and create a Power Pages site with Microsoft Entra External ID authentication for external contractors.
Why this is correct
CMEK meets encryption requirements, and Power Pages with External ID allows secure external access.
- ✗
Use Power Apps portals with Microsoft Entra ID B2B collaboration for external contractors, and leave encryption as default.
Why it's wrong here
Default encryption may not meet the encryption at rest requirement; customer-managed key is preferred.
- ✗
Implement a Power Automate flow to collect data via Microsoft Forms, and store results in Dataverse with default encryption.
Why it's wrong here
Microsoft Forms does not provide the same level of security and encryption control.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PL-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PL-900 exam.