HPE Aruba Certified Mobility Professional (ACMP) — Question 10

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?

Answer options

• 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.

Correct answer: A

Explanation

Permitting DNS on the ClearPass Portal is essential for guests to resolve the captive portal's domain name to an IP address, allowing them to access the page. Without DNS resolution, guests will be unable to reach the portal, whereas permitting DHCP, HTTP/HTTPS, or MAC-Auth alone will not address the DNS resolution issue.