ccna考试题库.doc

ccna考试题库QUESTION37WhataretwocharacteristicsofRIPv2?(Choosetwo.)-:BDExplanation/Reference:A:有类路由协议,错误B:可变长度子网掩码,正确C:采用广播地址更新,错误D:手动路由汇总,正确E:使用spf算法计算路径,错误。fiber-opticmodessupportdistancesofgreaterthan550meters?1000BASE-----ZXAnswer:CEExplanation/Reference:A:最长距离25米B:最长距离100米C:最长距离3000米D:最长距离550米E:最长距离70千米QUESTION39Whattwothingswillarouterdowhenrunningadistancevectorroutingprotocol?(Choosetwo.)-:ADExplanation/Reference:考点:考查距离矢量路由协议特性A:周期性更新,正确B:发送整个路由表到整个路由域,错误,只发送给邻居C:使用SPF算法,错误D:依靠邻居发送更新来更新路由表,正确E:在数据库中维护整个网络的拓扑。esslistisassignedtoaninterface?[interface]access--listsinterface[interface][interface]-lists[interface]Answer:CExplanation/Reference:?,:AExplanation/Reference:showipdhcpconflict命令可以查看哪些ip地址在使用上有冲突。有冲突的地址不再分配出去。A:地址被删除直到冲突解决,正确B:地址保留直到冲突解决,错误C/D:答案片面。E:当冲突解决后,地址会被显示。错误。,whathappenswhentheuserrunssetupfromaprivilegedprompt?,:AExplanation/Ref