Given: Sam Smith has just completed the installation of a WLAN controller with 10 lightweight access points. All VLANs use one RADIUS server. The VLANs are configured as follows:

VLAN green (5 access points) – SSID green – Lightweight EAP (LEAP) authentication – CCMP cipher suite

VLAN orange (5 access points) – SSID orange ?802.1X/PEAPv0 authentication – TKIP cipher suite

Sam’s computer can successfully authenticate and browse the Internet when using the green VLAN.

Sam’s computer cannot authenticate when using the orange VLAN.

What is the most likely cause of the problem?

A.
The orange VLAN does not support certificate-based authentication traffic.

B.
The TKIP cipher suite is not a valid option for 802.1X/PEAPv0 authentication.

C.
The clock on Sam’s computer pre-dates the RADIUS server’s certificate creation date/time.

D.
Sam does not have a valid Kerberos ID on the orange VLAN.

E.
PEAPv0 authentication is not supported over lightweight access points.