HPE Aruba Certified ClearPass Professional (ACCP) — Question 45

What is one difference between captive portal authentication and 802.1X authentication?

Answer options

• A. 802.1X authentication always authenticates the wireless client, while captive portal authentication always authenticates the wireless user.
• B. 802.1X authentication occurs at Layer 2, while captive portal authentication occurs at Layer 3.
• C. 802.1X authentication must use an LDAP server, while captive portal authentication can use a RADIUS server or an LDAP server.
• D. 802.1X authentication is typically implemented without encryption, while captive authentication is often combined with WPA or WPA2.

Correct answer: A

Explanation

The correct answer is A because 802.1X focuses on authenticating the device (client) itself, while captive portal authentication is centered around the user who is attempting to access the network. The other options are incorrect as they either misrepresent the layers at which these authentications occur, the server types required, or the encryption practices associated with them.