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A network administrator is configuring a RADIUS server connection on a Cisco 3500 series WLC. The configuration requires a shared secret password. What is the purpose of the shared secret password?
a) It is used to authenticate and encrypt user data on the WLAN.
b) It is used to encrypt the messages between the WLC and the RADIUS server.
c) It is used by the RADIUS server to authenticate WLAN users.
d) It allows users to authenticate and access the WLAN.