Which of the following commands indicates when an interface has a multicast capability？（）

单项选择题WhenanICMPredirectisreceivedfromahostthatisnotthecurrentgatewayfortherouteitisredirecting，whichofthefollowingoptionsisthemostappropriatetoconclude？（）

A.The redirect will be ignored
B.The routing table will be altered
C.The ping will fail， followed by other network services.
D.The host， which sent the ICMP redirect， will begin acting as the gateway

单项选择题ToexaminetheExhibit，presstheExhibitbutton.Whichofthefollowingaddresseswillbereachablewithoutaddinganyroutes？（）

A.129.35.54.21
B.129.35.57.21
C.129.35.58.21
D.129.35.55.21

单项选择题WhenconfiguringaninterfaceusingSMITandFurtherConfigurationwithanIPaddressandnetmask，whichofthefollowingoutcomesindicateshowtheroutingtableswillbeaffected？（）

A.A subnet route is automatically added
B.A default route is automatically added
C.All other routes are automatically added
D.The routing table is not affected

单项选择题Whichofthefollowing nooptions controlsthemaximumvalueofmbufs？（）

A.mtu
B.sb_max
C.thewall
D.tcp_sendspace

单项选择题Whichofthefollowingcommandsidentifiesallnetworkadaptertypesthatareinstalledinamachine？（）

A.lsdev
B.lsattr
C.ifconfig
D.netstat