单项选择题
A.Authentication Proxy
B.802.1X
C.Context-Based Access Control
D.Intrusion Detection System
E.Stateful firewall
单项选择题 ItisconsideredabestpracticetousetheDeadPeerDetection(DPD)featurewithwhichVPNtopologies?（）
单项选择题 Refer to the exhibit. Given the CPE deployment model, the Enterprise applications shown, and the functions being provided as designated, the appropriate product choice is ____.（）
多项选择题 Refer to the exhibit. Given the topology shown, what are two ways to allow the VPN to operate?（）