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what type of traffic is allowed to go from the user to the authentication server?

Peter has set up a wireless LAN that is compliant with the 802.11i standard. This implementation uses the AES algorithm. Before a user of a wireless device is authenticated, what type of traffic is allowed to go from the user to the authentication server?

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A.
DHCP, SMTP

B.
DHCP, POP, FTP

C.
Authentication traffic

D.
Encrypted traffic

Explanation:
If this WLAN is using the AES algorithm, that means 802.1x is also
being used, which is port authentication. No traffic other than authentication data
is available to the user and his wireless device until proper authentication has
taken place. After this happens, the users wireless device can receive SMTP, DHCP,
and all other types of traffic.

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