20+ practice questions focused on Demonstrate the capabilities of Power Apps — one of the most tested topics on the Microsoft Power Platform Fundamentals PL-900 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Demonstrate the capabilities of Power Apps PracticeA company wants to build a Power Apps app that uses a SQL Server database as its data source and requires complex business logic validation before saving data. Which type of app should they use?
Explanation: Canvas apps are the correct choice because they allow full control over the user interface and can incorporate complex business logic validation using Power Fx formulas before data is written to the SQL Server database. Unlike model-driven apps, which rely on predefined forms and server-side business rules, canvas apps enable custom validation logic directly in the app's formulas, such as checking multiple field conditions or calling custom connectors.
A company has a model-driven app with a custom table 'Issue' that has a choice column 'Status' with values: New, In Progress, Resolved, Closed. The app uses a business rule to set 'Resolved By' (lookup to User) when status changes to Resolved. Users report that the 'Resolved By' field is not being populated. What is the most likely cause?
Explanation: Business rules in model-driven apps can be scoped to either the entity (all forms) or a specific form. If the rule is scoped to a particular form (e.g., the main form) but the status change occurs via a quick create form, the rule will not trigger. This is the most likely cause because users report the field is not populated, indicating the rule is not firing in the context where the status is being changed.
A company is planning to build a Power Apps app for field service technicians to view and update work orders. The app must work offline and sync data when connected. Which TWO components are required to achieve offline capability?
Explanation: Option B is correct because an offline profile in Microsoft Dataverse defines which tables, columns, and records are available offline and controls how conflicts are resolved during synchronization, which is the core mechanism enabling canvas apps to work with Dataverse data while disconnected. Option D is correct because the Power Apps mobile player is the client that supports offline use, caching the offline profile's data locally and syncing changes back to Dataverse when connectivity is restored. Option A is incorrect because a Power Automate flow triggered on data change runs in the cloud and cannot provide local offline data storage or synchronization for the app. Option C is incorrect because SharePoint lists are not supported as an offline-capable data source for Power Apps and cannot be cached through an offline profile. Option E is incorrect because the Common Data Service (now Dataverse) database is the underlying data platform, but merely having the database does not by itself enable offline capability without an offline profile and a mobile client.
A company deploys a model-driven app that uses a custom table 'Project' with a status choice column. The app includes a business rule that shows a warning message when the status is set to 'Completed' but the 'End Date' is blank. The business rule works on the main form but not when records are updated via a Power Automate flow. Which THREE actions should the administrator take to enforce the rule regardless of update method?
Explanation: A synchronous plug-in runs on the Update message of the Project table, executing immediately within the database transaction. This ensures the validation logic (checking that End Date is not blank when Status is 'Completed') is enforced regardless of the update method, including Power Automate flows, which bypass client-side business rules.
A developer is trying to create a business process flow (BPF) for the 'Opportunity' table in a model-driven app. When activating the BPF, the developer receives the error shown in the exhibit. What is the most likely cause?
Explanation: The error shown in the exhibit indicates that the business process flow (BPF) references a table that is not enabled for business process flows. In Power Apps, only tables that have the 'Business process flows' option enabled in their table settings can be used as the primary entity for a BPF. The 'Opportunity' table is a standard table that is enabled by default, but if it has been disabled or the BPF is referencing a custom table that lacks this setting, activation will fail with this error. Option C correctly identifies this root cause.
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