43、 Which advanced har

43、 Which advanced hardware client feature, if enabled, allows a Cisco Aironet access point at the remote site to contact a RADIUS server at the VPN head-end site when Easy VPN advanced authentication methods have been deployed?当配置Easy VPN高级的验证方法时，在启动下面的哪一个高级硬件客户端特性后，它允许远端站点的Cisco Aironet access point去联系位于VPN头端站点的RADIUS服务器?

A. Device Pass-Through 设备直通

B. LEAP Bypass LEAP旁路

C. Network Extension mode 网络扩展模式

D. Client mode 客户端模式