From a security perspective, why is this significant?

During 802.1X/LEAP authentication, the username is passed across the wireless medium in clear text.

From a security perspective, why is this significant?
A . The username can be looked up in a dictionary file that lists common username/password combinations.
B . The username is needed for Personal Access Credential (PAC) and
C . 509 certificate validation.
D . 4-Way Handshake nonces are based on the username in WPA and WPA2 authentication.
E . The username is an input to the LEAP challenge/response hash that is exploited, so the username must be known to conduct authentication cracking.

View Answer

Answer: D