[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fr0rLGcfF7zH3bDxGkWHTSHiGctOMAlnpvs9eT7Z5llM":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2024-09-20 23:15:41",159814596,[8,9,10,11],"2400b\u002Fs","4800b\u002Fs","1200b\u002Fs","9600b\u002Fs",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},162,"93ae538ef67b26d6f8aa550a54c2bf5d","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fef7c6bc9cd7a9bc6959f1a1158791afa.jpg","2024-2025-1学期计算机网络05120560-4","work_36886792","ch2作业","设一个码元可携带4bit的信息,一个标准电话话路(带通矩形特性)的码元传输速率为2400Baud,则可以获得的数据率为()",[21,32,37,40,49,58,64,73,82,91],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],159814594,[25,26,27,28],"时分复用","频分复用","波分复用","码分复用","&quot;复用的所有的用户在相同的时间占用不同的频带宽度&quot;,此句描述的是哪种信道复用技术的特征()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":36,"source":30,"type":31},[],159814595,[25,26,27,28],"&quot;复用的所有的用户是在不同的时间占用同样的频带宽度&quot;,此句描述的是哪种信道复用技术的特征( )",{"answer":38,"createTime":5,"id":6,"options":39,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":41,"createTime":5,"id":42,"options":43,"question":48,"source":30,"type":31},[],159814597,[44,45,46,47],"双绞线","同轴电缆","光纤","微波","传输衰减最小、抗干扰能力最强的是( )",{"answer":50,"createTime":5,"id":51,"options":52,"question":57,"source":30,"type":31},[],159814598,[53,54,55,56],"接口特性","电气特性","功能特性","机械特性","物理层协议定义的一系列标准有四个方面的特性,不属于这些特性的是()",{"answer":59,"createTime":5,"id":60,"options":61,"question":63,"source":30,"type":31},[],159814599,[44,45,46,62],"电磁波","在局域网中最有前途的一种传输介质是()",{"answer":65,"createTime":5,"id":66,"options":67,"question":72,"source":30,"type":31},[],159814600,[68,69,70,71],"上网方式","电脑品牌","网络服务商","网页制作技术","通常所说的ADSL是指()",{"answer":74,"createTime":5,"id":75,"options":76,"question":81,"source":30,"type":31},[],159814601,[77,78,79,80],"编码","解码","解调","调制","在数据通信中,将数字信号变换为模拟信号的过程称为()",{"answer":83,"createTime":5,"id":84,"options":85,"question":90,"source":30,"type":31},[],159814602,[86,87,88,89],"单工","半双工","全双工","上述三种均不是","在同一个信道上的同一时刻,能够进行双向数据传送的通信方式是()",{"answer":92,"createTime":5,"id":93,"options":94,"question":99,"source":30,"type":31},[],159814603,[95,96,97,98],"基带和窄带","粗和细","屏蔽和非屏蔽","基带和宽带","双绞线分()两种"]