Practice Test Geeks(PL 400) Microsoft Certified Power Platform Developer Associate Practice Test
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Custom Connectors Flashcards

7 cards from real PL 400 practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. A custom connector needs to call an on-premises API that is not publicly accessible. Which component enables this connectivity?

    Answer: On-premises data gateway

    The on-premises data gateway acts as a bridge between Power Platform cloud services and APIs hosted inside a private corporate network.

  2. Which property in the OpenAPI definition controls the base URL that the custom connector uses to make API calls?

    Answer: host and basePath (Swagger 2.0) or servers[].url (OpenAPI 3.0)

    In Swagger 2.0 the host and basePath fields combine to form the base URL; in OpenAPI 3.0 the servers array's url property serves this purpose.

  3. After publishing a custom connector update, existing connections used by flows continue to use the old definition until which action is taken?

    Answer: The connection is recreated or the flow is re-authenticated

    Existing connections cache their configuration; recreating the connection or refreshing authentication picks up the updated connector definition.

  4. A developer wants to add a code snippet to transform a request body before it is sent from a custom connector. Where is this transformation configured in the connector portal?

    Answer: In the Code (Preview) section of the custom connector editor

    The Code (Preview) section allows developers to write C# script that runs before the request is sent or after the response is received.

  5. Which Azure service can be placed in front of a backend API to provide throttling, caching, and a single endpoint for multiple custom connectors?

    Answer: Azure API Management

    Azure API Management provides a managed gateway with policies for throttling, caching, and transformation in front of backend APIs used by custom connectors.

  6. When creating a custom connector from an Azure API Management API, what must be exported from APIM and imported into Power Platform?

    Answer: OpenAPI definition

    Exporting the OpenAPI definition from APIM and importing it into Power Platform is the standard path for creating a custom connector from an APIM-managed API.

  7. A custom connector action returns an object with a property whose name is unknown at design time. Which x-ms extension allows the connector to declare this dynamic output structure?

    Answer: x-ms-dynamic-schema

    x-ms-dynamic-schema instructs the connector to call a specified operation at design time to retrieve the actual output schema for that action.