[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fI5J-Qx_bt1RHnRL70JdLGgmAdaRzmQW7OfILyP-KFzg":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2023-09-25 14:49:24",98278844,[8,9,10,11],"10","16","24","32",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},7,"6b3604483131a16710114b7808f7bea5","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F76e016fc22ad69588e3917c749b43aed.jpg","计算机网络14期","351a0a3567ee423cb8f34e1e3eb9f8dc","3.3随堂测试","以太网在检测到( )次冲突后,控制器会放弃发送",[21,33,42,51,60,69,78],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2023-09-25 14:49:23",98278831,[26,27,28,29],"802.2","802.3","802.4","802.5","( )定义CSMA\u002FCD(以太网)的有关规约","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],98278833,[37,38,39,40],"CSMA\u002FCD","令牌环","令牌总线","无竞争协议","Ethernet采用的媒体访问控制方式为( )",{"answer":43,"createTime":23,"id":44,"options":45,"question":50,"source":31,"type":32},[],98278836,[46,47,48,49],"1倍","2倍","4倍","2.5倍","对于基带CSMA\u002FCD而言,为了确保发送站点在传输时能检测到可能存在的冲突,数据帧的传输时延至少要等于信号传播时延的( )",{"answer":52,"createTime":23,"id":53,"options":54,"question":59,"source":31,"type":32},[],98278840,[55,56,57,58],"站点可随时发送,仅在发送后检测冲突","站点在发送前需侦听信道,只在信道空闲时发送,之后无需特别操作","站点采用带冲突检测的CSMA协议进行发送","站点在获得令牌后发送","以太网(Ethernet)采用的发送策略是( )",{"answer":61,"createTime":5,"id":62,"options":63,"question":68,"source":31,"type":32},[],98278842,[64,65,66,67],"CSMA\u002FCD协议是一种解决访问冲突的协议","CSMA\u002FCD协议适用于所有802.3以太网","在网络负载较小时,CSMA\u002FCD协议的通信效率很高","这种网络协议适合传输非实时数据","关于IEEE802.3的CSMA\u002FCD协议,下面结论中错误的是( )",{"answer":70,"createTime":5,"id":71,"options":72,"question":77,"source":31,"type":32},[],98278843,[73,74,75,76],"帧的长度不是整数个字节","用收到的帧检验序列FCS查出有差错","帧的MAC数据字段的长度在46-1518字节之间","长度在64-1518字节之间的MAC帧","IEEE802.3规定,下列 ( )为有效的MAC帧",{"answer":79,"createTime":5,"id":6,"options":80,"question":19,"source":31,"type":32},[],[8,9,10,11]]