单项选择题
What should be enabled before any user views can be created during role-based CLI configuration ？（）
A.aaa new-model command B.secret password for the root user C.usernames and passwords D.multiple privilege levels
多项选择题 Whichthreeoptionsarenetworkevaluationtechniques？（）
多项选择题 WhichclassesdoestheU.S.governmentplaceclassifieddatainto？（）
单项选择题 Whichisthemaindifferencebetweenhost-basedandnetwork-basedintrusionprevention？（）
