300-435 Question 303
Select 3A network administrator is using a Cisco DNA Center WebHook Alert API to monitor real-time events in the network. They want to ensure that their application can receive alerts whenever a device goes offline. Which of the following steps are necessary to successfully configure the WebHook Alert API and receive notifications?
- A
Register the WebHook URL in Cisco DNA Center under the Event Notifications settings.
- B
Configure the WebHook service to listen for incoming HTTP POST requests from Cisco DNA Center.
- C
Manually poll the WebHook URL to fetch event updates from Cisco DNA Center.
- D
Enable and subscribe to the specific device offline event in Cisco DNA Center.
- E
Use the WebHook Alert API to send a confirmation email to the administrator for each alert received.
Show answer and explanation
Correct answers: A, B, D
Explanation
To successfully use the Cisco DNA Center WebHook Alert API, the WebHook URL must be registered in the Event Notifications settings. The WebHook service should actively listen for incoming HTTP POST requests to receive notifications. Additionally, specific events, such as 'device offline,' must be enabled and subscribed to in Cisco DNA Center to ensure relevant alerts are sent. WebHooks operate on a push-based notification system, so manual polling is unnecessary. Sending confirmation emails is outside the scope of the WebHook Alert API and requires custom implementation.
- A. Correct.
Correct: The WebHook URL must be registered in Cisco DNA Center to enable sending event notifications to the application.
- B. Correct.
Correct: The WebHook service must actively listen for incoming HTTP POST requests from Cisco DNA Center to process alerts.
- C. Incorrect.
Incorrect: WebHooks do not require manual polling; they operate on a push model where notifications are sent automatically.
- D. Correct.
Correct: Subscribing to specific events (such as a device offline notification) ensures that only relevant alerts are sent to the WebHook.
- E. Incorrect.
Incorrect: The WebHook Alert API does not natively send confirmation emails; this would require custom logic implemented by the application.