Comprehensive and Detailed 100 to 150 words of Explanation From Zscaler Digital Transformation Administrator topics:
ZIA supports Basic and Token authentication when an administrator adds a webhook, making C correct. With Basic authentication, the configuration supplies a username and password that the receiving endpoint validates. With Token authentication, the administrator provides a bearer token, allowing the destination service to authenticate the webhook request without exposing a username-password pair in each transaction.
OAuth and Digest are not the two authentication selections provided in this ZIA webhook configuration workflow. The distinction matters operationally because the selected method must match the authentication expected by the external notification, automation, or incident-management endpoint. Zscaler's webhook configuration instructions explicitly direct administrators to choose either Basic or Token authentication, then enter the corresponding credentials. Consequently, only option C contains both supported authentication types.