QUE S TION 5 In what mode of 802.11i operation is a central authentication server used? O PSK mode O 802.1X mode O Both A and B ONeither A nor B QUE STION 6 In 802.11i O 802.1X mode O PSK mode O Both A and B O Neither A nor B hosts must know a shared key QUE S TION 7 which of the followign statements is true regaring to wireless security? O WPA and WPA2 uses the same encryption algorithm O WPA is more stronger than WEP because WPA uses a different encryption algorithm O WPA and WPA2 are different in the authentication protocol O WPA can also be cracked