[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fC4gd756wFmDcerOwSL9jlhBsfTx48SEFNkJ3MG5JUbs":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":11,"question":18,"related":19,"source":29,"type":76},[],"2023-05-15 21:50:15",11065285,[8,9,10],"泛洪:交换机把从某一端口进来的帧通过所有其它的端口转发出去(注意,&quot;所有其它的端口&quot;是指除了这个帧进入交换机的那个端口以外的所有端口)","转发:交换机把从某一端口进来的帧通过另一个端口转发出去(注意,&quot;另一个端口&quot;不能是这个帧进入交换机的那个端口)","丢弃:交换机把从某一端口进来的帧直接丢弃",{"count":12,"courseId":13,"courseImg":14,"courseName":15,"workId":16,"workName":17},18,"43b8aac95a1164f286b88ef6dbb8926b","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fcec5b56832d1691f16be0c7bece0c41e.jpg","网络安全","4e8205b4f1814efc95ef2f4987a5a149","常见网络设备微测试","交换机对帧的转发操作行为有哪几种",[20,31,40,46,55,64,73,77,86,95],{"answer":21,"createTime":5,"id":22,"options":23,"question":28,"source":29,"type":30},[],11065279,[24,25,26,27],"物理层","数据链路层","网络层","传输层","交换机工作在( ),对数据帧进行操作.在收到数据帧后,交换机会根据数据帧的头部信息对数据帧进行转发","v1",0,{"answer":32,"createTime":5,"id":33,"options":34,"question":39,"source":29,"type":30},[],11065280,[35,36,37,38],"MAC地址表","Server-map表","路由表","会话表","交换机中有一个( ),里面存放了MAC地址与交换机端口的映射关系",{"answer":41,"createTime":5,"id":42,"options":43,"question":45,"source":29,"type":30},[],11065281,[24,25,26,44],"应用层","路由器是( )设备,其主要功能是实现报文在不同网络之间的转发",{"answer":47,"createTime":5,"id":48,"options":49,"question":54,"source":29,"type":30},[],11065282,[50,51,52,53],"防火墙","路由器","交换机","集线器","( )主要用于保护一个网络区域免受来自另一个网络区域的网络攻击和网络入侵行为",{"answer":56,"createTime":5,"id":57,"options":58,"question":63,"source":29,"type":30},[],11065283,[59,60,61,62],"192.168.0.1\u002F24","192.168.1.1\u002F24","172.16.0.1\u002F16","172.16.1.1\u002F16","采用默认web方式登录时,默认登录的地址为( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":29,"type":30},[],11065284,[68,69,70,71],"GigabitEthernet0\u002F0\u002F0","GigabitEthernet0\u002F0\u002F1","GigabitEthernet1\u002F0\u002F0","GigabitEthernet1\u002F0\u002F1","设备缺省可以通过( )接口来登录Web界面",{"answer":74,"createTime":5,"id":6,"options":75,"question":18,"source":29,"type":76},[],[8,9,10],1,{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":29,"type":76},[],11065286,[81,82,83,84],"如果进入交换机的是一个单播帧,则交换机会去MAC地址表中查找这个帧的目的MAC地址.如果查不到这个MAC地址,则交换机执行泛洪操作","如果进入交换机的是一个单播帧,则交换机会去MAC地址表中查找这个帧的目的MAC地址.如果查到了这个MAC地址,则比较这个MAC地址在MAC地址表中对应的端口是不是这个帧进入交换机的那个端口.如果不是,则交换机执行转发操作.如果是,则交换机执行丢弃操作","如果进入交换机的是一个广播帧,则交换机不会去查MAC地址表,而是直接执行泛洪操作","交换机还具有学习能力.当一个帧进入交换机后,交换机会检查这个帧的源MAC地址,并将该源MAC地址与这个帧进入交换机的那个端口进行映射,然后将这个映射关系存放进MAC地址表","关于交换机的基本工作原理描述正确的是",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":29,"type":76},[],11065287,[90,91,92,93],"Zone是本地逻辑安全区域的概念","Zone是一个或多个接口所连接的网络","同一个接口所连网络的所有网络设备一定位于同一安全区域中","只有当不同安全区域之间发生数据流动时,才会触发设备的安全检查,并实施相应的安全策略","关于安全区域描述正确的是",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":29,"type":76},[],11065288,[99,100,101,102],"非受信区域Untrust","非军事化区域DMZ","受信区域Trust","本地区域Local","缺省安全区域包括"]