单项选择题
For the following options， which feature is the foundation of Cisco Self-Defending Network technology？（）
A.secure network platform B.secure connectivity C.threat control and containment D.policy management
单项选择题 Whatisastaticpacket-filteringfirewallusedfor？（）
多项选择题 WhataretwocharacteristicsoftheSDMSecurityAuditwizard？（）
单项选择题 Refertotheexhibit.Whichstatementiscorrectbasedontheshowlogincommandoutputshown？（）
