PL 400 Custom Connectors 4 — Questions and Answers
Question 1: Which Power Platform environment type allows you to share a custom connector with users outside your organization without Microsoft certification?
- Default environment only
- Sandbox environment
- No sharing outside the tenant is possible without certification
- Any environment through the 'Share' option on the connector (Correct answer)
Correct answer: Any environment through the 'Share' option on the connector
Custom connectors can be shared with other users within the same tenant using the Share option, but cannot be shared cross-tenant without Microsoft certification.
Question 2: When a custom connector polling trigger checks for new records, what HTTP status code should the API return when there is no new data, so Power Automate does not trigger the flow?
- 200 OK with an empty array (Correct answer)
- 202 Accepted
- 204 No Content
- 404 Not Found
Correct answer: 200 OK with an empty array
A polling trigger should return HTTP 200 with an empty array to indicate no new data; Power Automate checks the array length to decide whether to fire.
Question 3: To enable dynamic dropdowns in a custom connector so users can pick values fetched from a live API at design time, which extension should you add to the parameter?
- x-ms-dynamic-values (Correct answer)
- x-ms-dynamic-schema
- x-ms-enum
- x-ms-permissions
Correct answer: x-ms-dynamic-values
The x-ms-dynamic-values extension points to an operation that retrieves the list of valid values to populate a parameter dropdown at design time.
Question 4: A developer exports a custom connector as part of a managed solution. Which action is blocked on the custom connector once it is part of a managed solution in the target environment?
- Using the connector in a flow
- Editing the connector definition directly (Correct answer)
- Creating a connection to the connector
- Sharing the connector with other users
Correct answer: Editing the connector definition directly
Managed solution components are read-only in target environments; the connector definition cannot be edited without going through the source environment.
Question 5: Which policy template should you use on a custom connector to rewrite the base URL of outbound requests, for example to route traffic through a different host in each environment?
- Set HTTP header
- Route request (Correct answer)
- Set query parameter
- Convert array to object
Correct answer: Route request
The 'Route request' policy template lets you override the host or path portion of the outbound request URL, enabling per-environment routing.
Question 6: A custom connector is configured with API key authentication. Where does Power Automate store the API key value entered by the user?
- In the flow definition as a string literal
- Encrypted within the connection object in the Power Platform environment (Correct answer)
- In the connector's OpenAPI security definition
- In the user's Azure Key Vault automatically
Correct answer: Encrypted within the connection object in the Power Platform environment
When a user creates a connection, credentials like API keys are encrypted and stored in the connection object within the Power Platform environment.
Question 7: Which HTTP verb must a webhook trigger's unsubscribe operation use to tell the external service to stop sending notifications?
- GET
- POST
- DELETE (Correct answer)
- PATCH
Correct answer: DELETE
The unsubscribe operation must use DELETE to remove the webhook registration from the external service when the flow is deleted or disabled.
PL 400 Custom Connectors 4
Which Power Platform environment type allows you to share a custom connector with users outside your organization without Microsoft certification?