单项选择题
A. 12 dBi omni
B. 10 dBi yagi
C. 14 dBi sector
D. 21 dBi dish
多项选择题 AfterproperlyconfiguringmultipleVLANs，anadministratorhasdecidedtosecureitsVLANnetwork.Whichthreestepsarerequiredtosecurethisenvironment？（Choosethree.）（）
多项选择题 Whataretwoimportantapproachestocommunicatewhenidentifyingacustomer’ssecurityrisks？（Choosetwo.）（）
多项选择题 WhichtoolsonCisco.comcouldyouusetoplanforcorrectCiscolOSimagestosupportacustomer’ssecuritydesignandrequirements？（Choosetwo.）（）
