AB-410 Building The Apps Practice Test 4 — 15 Questions

Question 1

You are configuring a canvas app that reads from a SharePoint list containing over 10,000 rows. Users report that galleries show incomplete results and that some filters return nothing. You need to improve data retrieval so the app returns complete and correct results. Which TWO actions should you take? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Increase the app's data row limit to the maximum allowed in App settings.. Incomplete gallery results over large SharePoint lists stem from delegation limits. Rewriting filters to use only delegable functions and operators pushes the query to the server so all matching rows are returned, and raising the Data row limit to its maximum helps the remaining non-delegable queries pull more rows before truncating. Indexing, virtual tables, and preloading into a collection do not remove the core delegation constraint and can introduce additional cost or complexity.

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Enable the SharePoint list's indexing on every column used in gallery filters.

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Load all rows into a collection at app start with ClearCollect and bind galleries to that collection.

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Replace the SharePoint connector with a Dataverse virtual table that points at the same list.

Question 2

You are building a canvas app that uses a Microsoft Copilot control to let users ask natural language questions about data displayed in a gallery. You need the Copilot control to generate responses that reference the app's own data, not just general knowledge. What should you do?

Accepted Answer

Enable the 'Use app data' property on the Copilot control and bind it to the gallery's Items property.. To make the Copilot control answer questions using the app's own data, you enable the 'Use app data' property and bind it to a relevant data source, such as a gallery's Items. This grounds the AI's responses in the displayed records. Other options either reference nonexistent properties or attempt to use external tools that cannot directly configure the control's data context.

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Add a Power Automate flow that calls the Copilot control and passes the gallery's selected item as a parameter.

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Set the Copilot control's 'Data source' property to the Dataverse table that backs the gallery.

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Write a Power Fx formula in the Copilot control's OnChange property to filter the gallery based on the user's question.

Question 3

You are building a canvas app that uses a Microsoft Dataverse table named Projects. The table has a choice column named Status with values 'Active', 'On Hold', and 'Completed'. You need to display a chart that shows the count of projects for each status. Which Power Fx formula should you use to populate the chart's Items property?

Accepted Answer

AddColumns(GroupBy(Projects, "Status", "StatusGroup"), "Count", CountRows(StatusGroup)). To display a chart of counts per status, you need a table with one row per status and a count column. The combination of GroupBy to group by Status and AddColumns with CountRows provides exactly that. Other formulas either return a single count, a list of unique values without counts, or grouped records without aggregation, none of which satisfy the chart's data requirements.

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GroupBy(Projects, "Status", "StatusGroup")

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Distinct(Projects, Status)

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CountIf(Projects, Status = "Active")

Question 4

You are building a canvas app that must display a list of 500 customer records from a Microsoft Dataverse table. The app will be used on mobile devices with intermittent connectivity. Users need to view and edit records even when offline. What should you use to meet this requirement?

Accepted Answer

Enable the 'Offline' setting in the app's Advanced settings and use the SaveData/LoadData functions to cache data locally.. To support offline viewing and editing in canvas apps, you must explicitly cache data using SaveData and LoadData. These functions store data locally on the device, and you can use the Connection object to detect network status and sync changes when back online. This approach ensures users can work with data even without connectivity, meeting the mobile scenario's needs.

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Use a collection to load all records at app start with ClearCollect, and rely on the app's automatic offline mode.

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Configure the Dataverse table to allow offline access in the table settings, and the app will automatically cache data.

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Use the 'Concurrent' function to load data in parallel and enable offline mode in the app's properties.

Question 5

You are building a canvas app that includes a gallery displaying a list of products from a Microsoft Dataverse table. Users need to be able to select a product and see its details on a separate screen. What is the most efficient way to pass the selected product's information to the detail screen?

Accepted Answer

Use the Navigate function with a context variable that stores the selected product's ID.. Using Navigate with a context variable that stores the selected product's ID is the most efficient way to pass information between screens. It minimizes memory usage and ensures the detail screen retrieves the latest data. This approach leverages Power Apps' built-in navigation and context management, providing a clean and performant solution.

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Use the Collect function to save the selected record to a collection, then navigate to the detail screen.

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Set the detail screen's OnVisible property to filter the product table based on the gallery's selected item.

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Store the entire selected record in a global variable using Set, and reference it on the detail screen.

Question 6

Which property must you configure in a canvas app to show a specific icon based on the value of a field?

Accepted Answer

Icon property. The Icon property on an icon control determines which glyph is rendered, so binding it to a conditional expression based on a field value lets the icon change dynamically. For example, setting Icon to If(ThisItem.Status = "Open", Icon.Warning, Icon.Check) displays different symbols per record. This is the property that directly controls the visual symbol, not the control's visibility or fill.

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Fill property

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DisplayMode property

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Visible property

Question 7

A canvas app user reports that a gallery is not displaying data from a Dataverse table. You verify the connection is active. What is the most likely cause?

Accepted Answer

The Items property of the gallery is empty. The gallery's Items property is the data source binding that determines what records the control renders. If the connection is active but Items is empty or misconfigured (e.g., no table selected, blank formula, or a filter returning zero rows), the gallery renders nothing regardless of connectivity. This is the most common and directly diagnosable cause when the connection itself is verified as healthy.

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The user does not have read access to the table

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The app is using the wrong theme

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The app is in edit mode

Question 8

You are configuring a model-driven app form. You need to show a field only if a choice column has a specific value. What should you use?

Accepted Answer

Business rule. Business rules in model-driven apps are the correct mechanism to conditionally show, hide, enable, disable, or set values on fields based on other column values, without writing code. They run on the client (form) and optionally server-side, and are configured declaratively in the Power Apps maker portal. A business rule can evaluate a choice column and set the visibility of another field accordingly, satisfying the requirement directly.

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Workflow

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Power Fx formula in the field property

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Canvas component

Question 9

In a canvas app, you want to allow users to upload images to Dataverse. Which control is best suited for this?

Accepted Answer

Add Picture control. The Add Picture control in Power Apps is specifically designed to let users select and upload image files from their device. It provides a built-in file picker, preview, and exposes the image content via the .Photo property, which can be patched to a Dataverse image or file column.

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Gallery control

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Text input control

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Label control

Question 10

What is the first step to create a model-driven app from an existing table?

Accepted Answer

Select the table in the Power Apps maker portal. To create a model-driven app from an existing table, the first step is to select that table in the Power Apps maker portal. Model-driven apps are metadata-driven and are built on top of Dataverse tables, so the table must be chosen as the starting data source before any forms, views, or navigation can be generated. The maker portal then auto-generates a basic app shell based on the selected table.

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Write a Power Fx formula

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Configure the command bar

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Create a business rule

Question 11

You have an app generated via natural language. You want to change the primary field of the app. Where do you change this?

Accepted Answer

In the table settings within Dataverse. The primary field of a Dataverse table is defined at the table (entity) level in the table settings, not in the app. Changing it requires editing the table's primary column in Dataverse, which then propagates to any app (canvas or model-driven) that uses that table. This is why the change is made in table settings, not the app designer.

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In the App designer property pane

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In the Canvas app properties

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By deleting and recreating the app

Question 12

You have created a Copilot agent for your canvas app. Where do you configure the topics the agent can respond to?

Accepted Answer

Copilot Studio. Copilot agents created for Power Apps are built and managed in Copilot Studio (formerly Power Virtual Agents). Topics — the conversational intents and responses the agent can handle — are configured there, where you define trigger phrases, messages, questions, and actions. The canvas app simply surfaces the agent; the topic logic lives in Copilot Studio.

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Dataverse environment settings

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Canvas app formula bar

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Power Apps App designer

Question 13

A user complains that their changes in a canvas app are not saved to the Dataverse table. What is the most common reason?

Accepted Answer

The SubmitForm function is not called. In Power Apps canvas apps, saving form data to Dataverse requires explicitly invoking SubmitForm(FormName) — typically from a button's OnSelect property. Editing fields on the form only updates the local form state; nothing is written to the data source until SubmitForm is called. If the developer forgot to wire SubmitForm to a control, the user's edits are discarded when the form is closed or reset.

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The data source is read-only

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The connection is offline

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The form is in View mode

Question 14

You need to trigger a Cloud Flow from a canvas app when a button is clicked. How do you integrate the flow?

Accepted Answer

Add the flow in the Power Automate pane and call it in the OnSelect property. To trigger a cloud flow from a canvas app, you add the flow to the app via the Power Automate pane (Data > Add data > Power Automate), which makes the flow available as a method. You then call it in the OnSelect property of a button, typically using the syntax FlowName.Run(parameters). This is the standard integration pattern for invoking a flow from a canvas app.

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Use a business rule

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Embed it as a web page

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Add it to the sitemap

Question 15

Which tool in the Power Apps environment allows you to test your canvas app without publishing it?

Accepted Answer

Preview button. The Preview button (or F5) runs the canvas app in a preview/play mode so you can test its behavior and interactions without publishing it to users. This lets makers validate functionality, formulas, and navigation in a safe environment. Publishing is a separate step that distributes the app to end users.

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Publish button

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App checker

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Data pane