Asystemhasacriticalneedfornetworkservicesonasmallnetworkwithalimitednumberofhost
Asystemhasacriticalneedfornetworkservicesonasmallnetworkwithalimitednumberofhosts.Systemoverheadisnotaconcern.Whichofthefollowingshouldthesystemadministratordotohelpensureconnectivityintheeventofagatewayfailure？（）
A.Usetheifconfigcommandtoenabledeadgatedetection
B.Usethenocommandtosetactivedeadgatewaydetection
C.Usetheroutecommandtosetactivedeadgatewaydetection
D.Addthelineactive_dgd=1tothe/etc/gated.confcommandandrefreshthegateddaemon
正确答案：参考C
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