A.Ensure that all wireless networking equipment fully supports the IEE 802.11a， IEEE 802.11b， and IEEE 802.11g wireless networking protocols
B.Assign a random service set identifier （SSID） to each wireless access point. Disable broadcasting of SSIDs on all wireless access points
C.Create a firewall to block traffic to any IP address that did not originate from the company’s DHCP servers. Ensure that all wireless access points connect behind this new firewall
D.Configure a server to use Internet Authentication Service （IAS）. Configure the wireless networking equipment to use the IEEE 802.1x protocol and the IAS server

A.Use a password generator application to create a preshared key， and distribute it to all mobile users
B.Use computer autoenrollment to create digital certificates that can be used to authenticate to a VPN server
C.Acquire a digital certificate that can be used for SSL from a commercial CA for each computer that established a VPN connection
D.Configure IPSec policies on all Routing and Remote Access servers to require the use of digital certificates