单项选择题
A.lsdev
B.lsattr
C.netstat
D.ifconfig
单项选择题 WhenanICMPredirectisreceivedfromahostthatisnotthecurrentgatewayfortherouteitisredirecting，whichofthefollowingoptionsisthemostappropriatetoconclude？（）
单项选择题 WhenconfiguringaninterfaceusingSMITandFurtherConfigurationwithanIPaddressandnetmask，whichofthefollowingoutcomesindicateshowtheroutingtableswillbeaffected？（）
单项选择题 Whichofthefollowing"nooptions"controlsthemaximumvalueofmbufs？（）