PL-900 Practice Exam — PL-900: Power Platform Fundamentals

This question tests understanding of Power Apps versioning behavior, a core Power Platform fundamentals topic for the PL-900 exam. The scenario starts with an existing published Power Apps app, which creates the first version entry in the Versions tab. When you create and publish a new version of the app, a second distinct version entry is added to the tab. When a user restores the previous original version, Power Apps does not modify or remove existing version entries. Instead, it creates a third new version entry that duplicates the content of the restored older version, and marks this third entry as the latest published version to preserve full change history. This results in three total versions listed in the Versions tab, so the original underlined text stating two versions is incorrect, and the correct replacement value is three. Option Analysis: A. No change is needed is incorrect. The original statement claims only two versions appear in the Versions tab, but the restoration process creates an additional third version entry, so the original underlined text is wrong and a change is required. B. one is incorrect. Even before the restoration action, two versions (the original app and the new published version) already exist in the version list, so a count of one is inconsistent with the scenario. C. three is correct. The total version count includes the initial published version, the second new published version, and the third version created when the older version is restored, which matches the behavior defined for Power Apps version management. D. four is incorrect. There are no additional publish, save, or restore actions described in the scenario that would generate a fourth version entry, so this count is higher than the actual number of versions created. Key Concepts: 1. Power Apps Version History Tracking: Power Apps retains all published app versions in the Versions tab permanently by default, and never overwrites or deletes existing version entries when new updates are published or old versions are rolled back, to support full auditability of app changes. 2. Power Apps Restore Functionality: Restoring a previous app version creates a new distinct version entry that replicates the content of the selected older version, rather than modifying existing entries, and sets the new entry as the currently published version for end users. 3. Power Platform Lifecycle Management Fundamentals: The PL-900 exam covers basic change management capabilities for Power Platform components, including version tracking and rollback features for Power Apps, Power Automate, and other core tools. References: Manage and restore canvas app versions, https://learn.microsoft.com/en-us/power-apps/maker/canvas-apps/restore-an-app Microsoft Power Platform Fundamentals (PL-900) Certification Page, https://learn.microsoft.com/en-us/certifications/power-platform-fundamentals/

The scenario requires users to access Dynamics 365 Sales Hub data from mobile devices. For the PL-900 certification, candidates are expected to identify appropriate Dynamics 365 client applications for specific use cases. Dynamics 365 for Phones is the native mobile client designed to provide full access to model-driven Dynamics 365 apps such as Sales Hub on iOS and Android devices, including support for data synchronization, offline access, and alignment with the same security and customizations configured for the browser-based Sales Hub app. This directly addresses the requirement to access Sales data from mobile devices. Option Analysis: A. Dynamics 365 Remote Assist is a mixed reality application designed for frontline workers to collaborate with remote subject matter experts in real time using device cameras, spatial annotations, and HoloLens integration. It is not built to access Sales Hub data, so this option is incorrect. B. Dynamics 365 Finance is an enterprise resource planning (ERP) application focused on financial management, accounting, and financial reporting operations. It is not a mobile client for accessing Dynamics 365 Sales data, so this option is incorrect. C. Dynamics 365 Business Central is a small and medium business (SMB) focused ERP solution that handles finance, supply chain, sales, and operations for SMB organizations. It is a standalone business application, not a mobile client for accessing the Dynamics 365 Sales Hub app, so this option is incorrect. D. Dynamics 365 for Phones is the official native mobile application for accessing model-driven Dynamics 365 apps including Sales Hub, Customer Service Hub, and custom model-driven Power Apps from mobile devices. It supports all core Sales Hub functionality, offline access, and adheres to existing organizational security and configuration settings, so this option is correct. Key Concepts: 1. Dynamics 365 Mobile Client Purpose: The PL-900 exam tests knowledge of client applications for Dynamics 365, including that Dynamics 365 for Phones and Tablets is the supported native mobile client for accessing model-driven Dynamics 365 apps on mobile devices, with features tailored for on-the-go users such as sales representatives. 2. Dynamics 365 Product Line Segmentation: PL-900 requires candidates to distinguish between different categories of Dynamics 365 apps, including customer relationship management (CRM) apps, ERP apps, and mixed reality/frontline worker apps, to select the appropriate tool for a given business requirement. 3. Model-Driven App Mobile Access: Model-driven apps built on the Power Platform, including out-of-the-box Dynamics 365 apps like Sales Hub, are accessible via the Dynamics 365 for Phones app without additional custom development, ensuring consistency between browser and mobile user experiences. References: Use the Dynamics 365 for phones and tablets app, Overview of Dynamics 365 mobile apps, https://learn.microsoft.com/en-us/dynamics365/mobile-app/overview

The scenario requires a Power Apps portal for customers to submit support cases, a core customer service use case for the Power Platform. Per PL-900 Power Platform fundamentals, Power Apps portals are external-facing low-code websites that natively integrate with the Power Platform's structured data store, formerly called Common Data Service (now Microsoft Dataverse). Case records are a standard out-of-the-box table in Common Data Service, designed specifically for customer service issue tracking. When customers submit cases via the portal, the records are directly created and stored in Common Data Service, no additional integration is required for this core functionality, making this the correct data source for the requirement. Option Analysis: A. Dynamics 365 Connector: Incorrect. The Dynamics 365 Connector is a wrapper used to access Dynamics 365 application data from canvas apps, Power Automate flows, or other external Power Platform components. Power Apps portals connect directly to the underlying Common Data Service environment where Dynamics 365 data resides, so no separate connector is used as the primary data source for case submission. B. Microsoft SharePoint: Incorrect. SharePoint is a collaboration and document management platform, not a structured data store for business transaction records like support cases. While Power Apps portals can be integrated with SharePoint for document attachment storage, it is not the primary data source for case records. C. Microsoft Azure Storage: Incorrect. Azure Storage is a cloud storage service for unstructured and semi-structured data such as blobs, files, and queue messages. It is not designed to host structured business data tables like the Case table used for customer support ticket tracking, so it is not the correct data source for this use case. D. Common Data Service: Correct. Common Data Service (now branded as Microsoft Dataverse) is the native, structured data store for the Power Platform. It includes pre-built standard tables for common business scenarios, including the Case (Incident) table for customer service requests. Power Apps portals use Common Data Service as their primary, native data source, allowing external customers to securely create, view, and manage case records directly in the data store without additional integration tools. Key Concepts: 1. Power Apps Portals Core Architecture: Power Apps portals are external-facing low-code websites that extend Power Platform data to users outside an organization. They are tightly integrated with Common Data Service as their default primary data source, which eliminates the need for custom integration for core data interaction use cases like case submission. 2. Common Data Service (Dataverse) Standard Tables: Common Data Service includes a set of pre-built, standardized tables for common business operations, including the Case (Incident) table designed specifically for tracking customer support issues, which aligns directly with the customer service manager's requirement in the scenario. 3. Power Platform Data Source Classification: The PL-900 exam distinguishes between native Power Platform data sources (like Common Data Service) that are integrated directly into the platform, and connectors that are used to access external third-party or separate Microsoft service data. For core portal functionality, the native data source is always the preferred and default option. References: What is Microsoft Dataverse?, https://learn.microsoft.com/en-us/power-apps/maker/data-platform/data-platform-intro Power Apps portals architecture

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