PL 400 PCF Controls (Power Apps Component Framework) 2

Question 1

In the `updateView` method signature, which parameter provides access to the control's current input property values and all framework services?

Accepted Answer

context

Answer

inputs

Answer

props

Answer

state

Question 2

How does a PCF control signal to the host application that an output property value has changed?

Accepted Answer

By calling context.events.notifyOutputChanged()

Answer

By directly mutating the context.parameters object

Answer

By dispatching a CustomEvent on the control's container element

Answer

By calling context.webAPI.updateRecord() with the new value

Question 3

What is the purpose of the `getOutputs` method in a PCF control?

Accepted Answer

To return a snapshot of all current output property values to the framework after notifyOutputChanged is called

Answer

To initialize the control's output DOM container elements

Answer

To validate user input before persisting it to Dataverse

Answer

To register handlers for data output events

Question 4

Which ControlManifest.Input.xml element declares each bindable property, its data type, and its usage direction?

Accepted Answer

Answer

<field>

Answer

Answer

Question 5

What is the key architectural difference between a 'field' type and a 'dataset' type PCF component?

Accepted Answer

Field components bind to a single scalar value; dataset components bind to a collection of records with columns

Answer

Field components use TypeScript; dataset components must use plain JavaScript

Answer

Field components only work in canvas apps; dataset components only work in model-driven apps

Answer

Field components support offline scenarios; dataset components require an active Dataverse connection

Question 6

What should a developer implement in the `destroy` method of a PCF control?

Accepted Answer

Cleanup of event listeners, timers, and external subscriptions to prevent memory leaks

Answer

Deletion of the associated Dataverse record when the form closes

Answer

Deregistration of the control from the PCF global registry

Answer

Resetting all property values to their manifest-defined defaults

Question 7

Which workflow correctly packages and deploys a PCF control to a Dataverse environment for production use?

Accepted Answer

Build the solution with `pac solution build` to create an importable .zip, then import it via the Maker Portal or pac solution import

Answer

Upload the TypeScript source files directly through the Power Apps Maker Portal

Answer

Run `npm run build --deploy` which automatically publishes to the connected environment

Answer

Compress the project folder manually and upload it to Power Platform Admin Center