单项选择题
When running a Windows server, which option is used with the ping command to convert numerical addresses to host names?（）
A. -r B. -a C. -v D. -n
单项选择题 Whichofthefollowingisabenefitofapplicationvirtualization？（）
单项选择题 Whichswitchshouldbeusedwiththeipconfigcommandifanadministratorwantstotestthe functionalityofaDHCPserver？（）
单项选择题 WhichofthefollowingstorageinterfaceprotocolshastheFASTESTspeeds？（）
