What security solution is represented?

You perform a protocol capture using Wireshark and a compatible 802.11 adapter in Linux. When viewing the capture, you see an auth req frame and an auth rsp frame. Then you see an assoc req frame and an assoc rsp frame. Shortly after, you see DHCP communications and then ISAKMP protocol packets.

What security solution is represented?
A . 802.1X/EAP-TTLS
B . WPA2-Personal with AES-CCMP
C . 802.1X/PEAPv0/MS-CHAPv2
D . EAP-MD5
E . Open 802.11 authentication with IPSec

Answer: E