单项选择题
Which IOS QoS mechanism is used strictly to rate limit traffic destinedto the router itself？（）
A. Class-Based Policing B. Control Plane Policing C. Dual-Rate Policier D. Single-Rate Policier E. Class-BasedTraffic Shaper
单项选择题 InanL2TPvoluntarytunnelingscenario，theVPDNtunnelisterminatedbetween：（）
单项选择题 WhichoneofthefollowingisNOT asupportedIKEattribute？（）
单项选择题 WithPGP，whichofthefollowingentitysignsausers’spublickey？（）
