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Asystemhasacriticalneedfornetworkservicesonasmallnetworkwithalimitednumberofhosts.Systemoverheadisnotaconcern.Whichofthefollowingshouldthesystemadministratordotohelpensureconnectivityintheeventofagatewayfailure?()

A.Usetheifconfigcommandtoenabledeadgatedetection

B.Usethenocommandtosetactivedeadgatewaydetection

C.Usetheroutecommandtosetactivedeadgatewaydetection

D.Addthelineactive_dgd=1tothe/etc/gated.confcommandandrefreshthegateddaemon


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