Explanation/Reference:
Explanation:
A: Sponsored self-registration is a means to allow guests to self-register, but not give them full access until a sponsor (could even be a central help desk) has approved the request. When the registration form is completed by the guest/user, an on screen message is displayed for the guest stating the account requires approval.
Guests are disabled upon registration and need to wait on the receipt page for the confirmation until the login button gets enabled.
D. Device Mac Authentication is designed for authenticating guest devices based on their MAC address.
References: ClearPass Policy Manager 6.5 User Guide (October 2015), page 94
https://community.arubanetworks.com/aruba/attachments/aruba/SoftwareUserReferenceGuides/52/1/ ClearPass%20Policy%20Manager%206.5%20User%20Guide.pdf