PL-900 Demonstrate the capabilities of Power Apps Practice Test 4 — 15 Questions

Question 1

A user reports that a Power App button does nothing when clicked. The button's OnSelect property contains: Navigate(Screen2). What is the most likely cause?

Accepted Answer

Screen2 does not exist in the app. Option B is correct because if Screen2 does not exist, the Navigate function fails silently. Option A is wrong because the app does not need to be published to test navigation. Option C is wrong because the formula is correct if Screen2 exists. Option D is wrong because permissions do not affect navigation between screens.

Answer

The formula is missing parentheses

Answer

The user lacks permission to navigate to Screen2

Answer

The app is not published

Question 2

A company uses a Power App to track inventory. The app displays a gallery of items filtered by a dropdown. When the user selects 'Electronics', the gallery shows all electronics items. However, after the user clears the dropdown, the gallery remains empty. What is the most likely reason?

Accepted Answer

The gallery's Items property uses a filter that references Dropdown.Selected.Value, and when the dropdown is cleared, the filter returns blank. Option A is correct because if the filter uses Dropdown.Selected.Value, when nothing is selected the value is blank, causing the filter to fail. Option B is wrong because the dropdown is not required to be cleared; the issue is the filter. Option C is wrong because performance is not the issue. Option D is wrong because the data source is likely fine.

Answer

The dropdown's AllowEmptySelection property is set to false

Answer

The data source requires a refresh after clearing selection

Answer

The app's OnStart property is clearing the data source

Question 3

A Power App uses a Patch function to update a Dataverse table. The app runs into delegation warnings for large datasets. Which approach best resolves delegation warnings while maintaining functionality?

Accepted Answer

Use delegable functions such as Filter and LookUp to retrieve only necessary records before performing updates. Option A is correct because delegable functions like Filter, Search, and LookUp can be used to limit data before aggregation. Option B is wrong because increasing batch size does not address delegation. Option C is wrong because delegable functions reduce warnings. Option D is wrong because switching to SharePoint may still have delegation issues.

Answer

Increase the data row limit in the app settings

Answer

Switch the data source to SharePoint for better delegation support

Answer

Avoid using delegable functions to reduce complexity

Question 4

A Power App is used by a global team. The app displays dates in US format (MM/DD/YYYY), but users in Europe expect DD/MM/YYYY. What is the best way to handle this?

Accepted Answer

Do nothing; Power Apps automatically formats dates based on the user's browser locale. Option D is correct because the app should respect the user's locale settings. Option A is wrong because hardcoding a format ignores user locale. Option B is wrong because a single format won't satisfy all. Option C is wrong because the Language function returns the user's locale, which can be used to format dates dynamically, but the best practice is to let Power Apps handle locale automatically by not overriding format.

Answer

Hardcode the date format based on the user's region in the app

Answer

Use the Language function to set the date format manually

Answer

Use a text input for dates instead of a date picker

Question 5

A manager wants to create a Power App that shows a list of customer orders with the ability to drill into each order's details. Which approach is most efficient?

Accepted Answer

Use a gallery to list orders and navigate to a detail screen on selection. Option B is correct because using a gallery to show orders and linking to a detail screen is a common pattern. Option A is wrong because a single form is not efficient for browsing. Option C is wrong because a data table is less interactive than a gallery. Option D is wrong because exporting to Excel is not an app.

Answer

Use a data table connected directly to the data source

Answer

Use a single form with navigation buttons to move between orders

Answer

Export the data to Excel and use Power Apps to display the Excel file

Question 6

A Power App uses a Timer control to refresh data every 5 minutes. The app experiences performance degradation after running for several hours. What is the most likely cause?

Accepted Answer

The data source is not delegating queries, causing the app to load all data each time. Option C is correct because constant refreshing of large datasets can cause memory accumulation. Option A is wrong because 5 minutes is not too frequent. Option B is wrong because the timer does not cause memory leaks by itself. Option D is wrong because network latency does not degrade over time.

Answer

The Timer control has an internal memory leak

Answer

The timer interval is too short, causing excessive network calls

Answer

The app is not using a CDN for static resources

Question 7

Which TWO are valid ways to share a canvas app with other users in your organization? (Select two.)

Accepted Answer

Add users to a security group that has been granted access to the app. Option A is correct because sharing directly with users or groups is a standard method. Option C is correct because sharing via a security group is also possible. Option B is wrong because the app must be published first. Option D is wrong because Power Apps does not generate a public URL for sharing. Option E is wrong because exporting and importing is for transferring between environments, not sharing.

Answer

Send a direct link to the app via email before publishing

Answer

Generate a public URL that anyone in the organization can use

Answer

Export the app as a .msapp file and email it to users

Question 8

Which THREE components are required to build a model-driven app in Power Apps? (Select three.)

Accepted Answer

Dataverse tables. Option A is correct because tables in Dataverse are the foundation. Option C is correct because forms define how data is displayed and edited. Option E is correct because views define the list of records. Option B is wrong because canvas apps are separate. Option D is wrong because flows are automations, not required for the app itself.

Answer

Power Automate flows

Answer

Canvas app screens

Question 9

Which TWO data sources can be used directly in a canvas app without a premium connector? (Select two.)

Accepted Answer

SharePoint list. Option A is correct because SharePoint is a standard connector. Option B is correct because Excel stored in OneDrive for Business is also standard. Option C is wrong because SQL Server requires a premium connector. Option D is wrong because Dataverse requires a premium license. Option E is wrong because Salesforce requires premium.

Answer

SQL Server database

Answer

Dataverse

Answer

Salesforce

Question 10

Refer to the exhibit. You are deploying a Power Apps environment using an ARM template. The template deploys a Production environment with Dataverse and the D365_FieldService template. After deployment, you need to ensure that users can create model-driven apps based on the Field Service tables. What additional step is required?

Accepted Answer

Assign appropriate Dynamics 365 licenses to users and install the Field Service app in the environment. Option B is correct because the template deploys the environment and Dataverse, but model-driven apps require a Dynamics 365 app (like Field Service) to be installed via the admin center or a license assignment. Option A is wrong because the environment is already created. Option C is wrong because the template includes Dataverse. Option D is wrong because Power Automate is not required for model-driven apps.

Answer

Add a Dataverse database manually after deployment

Answer

Create a new environment with a different template

Answer

Create a Power Automate flow to sync Field Service data

Question 11

Refer to the exhibit. A canvas app has a gallery (Gallery1) with the Items property shown. The app also has a text input (TextSearchBox1) for searching accounts. Users report that when they type a search term, the gallery does not update until they click a button. What is the most likely cause?

Accepted Answer

The gallery's Items property is set to a static value instead of using TextSearchBox1.Text. Option A is correct because the gallery's Items property uses the text input value, but if the formula is not set to react to changes, it won't update automatically. The default behavior is that the gallery should update as the user types, but if the TextSearchBox1 is not bound correctly or the formula is in a different context (e.g., only on button click), it may not update. However, the question implies the formula is correct but the gallery doesn't update. The typical issue is that the formula is placed in the wrong property (e.g., OnSelect of a button). Option A is most plausible.

Answer

The data source is not delegable, causing the filter to fail

Answer

The text input's OnChange event is not set to refresh the gallery

Answer

The gallery's DelayOutput property on the text input is set to true

Question 12

Refer to the exhibit. A Power App uses the Patch function to create a new record in the Orders table. The code runs without error, but no record appears in the Orders table. What is the most likely issue?

Accepted Answer

The user does not have write permissions to the Orders table. Option B is correct because Patch returns the created record, but if the result is not assigned to a variable or used, the record may not be saved if there is a missing required field or permission issue. However, the most common cause is that the Patch function is missing the record to patch (second argument should be a record, but Defaults(Orders) is correct for creation). The issue could be that the table does not have a primary key or the user lacks permissions. Option B is plausible.

Answer

The Patch function is missing the 'As' parameter

Answer

The table name 'Orders' is misspelled

Answer

The Patch function is being called from a non-delegable data source

Question 13

A company wants to create a mobile app for field service technicians to log work orders. The app must use a SharePoint list as the data source and include offline capability. Which type of Power App should they build?

Accepted Answer

Canvas app. A canvas app allows custom layout and offline support via Power Apps mobile. Model-driven apps (B) are primarily for data management and require online connectivity. Power Pages (C) is for external websites. Power Automate (D) is for workflow automation.

Answer

Power Pages site

Answer

Power Automate flow

Answer

Model-driven app

Question 14

A Power Apps developer created a canvas app that uses a SQL Server data source. Users report that the app is slow when navigating between screens. Which design change should the developer make to improve performance?

Accepted Answer

Apply delegation-compatible filters on galleries to reduce data loaded from the server.. Using delegation with server-side filtering (A) reduces data transfer and improves speed. B is incorrect because OnStart runs once and does not affect navigation. C is wrong as SQL supports delegation. D is unnecessary; the issue is data volume.

Answer

Replace the SQL data source with a SharePoint list to increase delegation limits.

Answer

Move all data loading logic from OnVisible to the App.OnStart property.

Answer

Add a Timer control to preload data for the next screen.

Question 15

A model-driven app uses a custom table 'Service Request' with a status field. The business requires that when a status changes to 'Resolved', the app automatically sends an email to the requester. Which approach should be used?

Accepted Answer

Create a Power Automate flow with a trigger 'When a record is updated' and condition on status change.. A Power Automate flow triggered on status change (D) is the correct way to send email automatically. A is a manual action. B does not trigger automatically. C requires user interaction.

Answer

Use a Power Apps component framework (PCF) control to trigger an email.

Answer

Add a button on the form that runs a Power Automate flow on demand.

Answer

Create a business rule that sends an email when the status is updated.