What will resolve this issue?

AOS-Switches authenticate guests to ClearPass with captive portal. An administrator notices that some guests are unable to reach the captive portal page.

What will resolve this issue?
A . Permit DNS on the ClearPass Portal
B . Permit DHCP on the ClearPass Portal.
C . Permit HTTP or HTTPS on the ClearPass Portal.
D . Permit Allow All MAC-Auth on the ClearPass Portal.

View Answer

Answer: A