[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fzcztZrJKh8MKyYwvoIlJsP_vmEW90xvir2w2_vQdg-c":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-12-01 11:50:02",246606129,[8,9,10,11],"A.冲突信号等于多台发送主机中一台主机的信号波形","B.冲突信号波形不符合曼彻斯特编码信号波形的变化规律","C.比较法通过比较发送的信号波形与总线上出现的信号波形来检测冲突","D.编码违例判决法通过检测总线信号波形是否符合曼彻斯特编码规律来发现冲突",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},30,"2938b4ff88e52efc316913664b37d3ff","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F59d71c300dff6ba7fa49e1ad37a4ae2d.jpg","计算机网络","work_48648689","第三章测验","10. 以下关于冲突信号波形特点的描述中,错误的是( )",[21,32,41,50,59,68,77,86,95,104],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],246606097,[25,26,27,28],"A.误码率是指二进制比特在数据传输系统中被传错的概率","B.数值上等于被传错的比特数与传输的二进制比特总数之比","C.衡量数据传输系统异常工作状态下传输可靠性的参数","D.被测量的传输二进制位数越多,测出的误码率值越接近真实值","1. 以下关于误码率概念的描述中,错误的是()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],246606101,[36,37,38,39],"A. 1101011001","B. 101011011","C. 11011011","D. 1011001","2. 如果用G (x)为11010010计算CRC校验,则CRC校验码有可能为( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],246606104,[45,46,47,48],"A.发送方将数据与校验码—起通过物理线路发送到接收方","B.接收方通过校验码译码器判断数据传输是否出错","C.发送方的存储器—般不保留发送数据的副本","D.如果超过最大重发次数,发送方将会停止重传","3. 以下关于差错控制机制的描述中,错误的是()",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],246606109,[54,55,56,57],"A.连接多台计算机的传输介质称为"共享介质"","B.多台主机利用共享介质发送和接收数据称为"多路访问"","C.多台主机同时在—条共享介质上发送数据的现象称为"冲突"","D.仅共享总线的Ethernet需要解决冲突的"介质访问控制方法"","4. 以下关于介质访问控制概念的描述中,错误的是()",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],246606111,[63,64,65,66],"A.Ethernet的物理层规定发送的数据采用曼彻斯特编码方式","B.有数据在传输,总线电平按曼彻斯特编码规律跳变,此时为"总线忙"","C.没有数据在传输,总线电平按时钟周期跳变,此时为"总线空闲"","D.主机已准备好发送的数据,并且总线此时空闲,则主机可以发送","5. 以下关于CSMA\u002FCD载波侦听过程的描述中,错误的是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],246606114,[72,73,74,75],"A.冲突窗口是指连接在一个缆段上所有主机都能检测到冲突的最短时间","B.超过冲突窗口时间,冲突的数据帧可以传遍整个缆段","C.一个缆段就是一个"冲突域"","D.冲突窗口的时间是不确定的","6. 以下关于冲突域概念的描述中,错误的是()",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":30,"type":31},[],246606120,[81,82,83,84],"A.检测出冲突,发送主机要进入停止发送、随机延迟后重发的流程","B.发送冲突加强干扰序列信号的目的是减少因冲突浪费的时间","C.随机延迟重发的第一步是发送"冲突加强干扰序列信号"","D.Ethernet协议规定冲突加强干扰序列信号长度为32B","7.以下关于CSMA\u002FCD冲突发现的描述中,错误的是( )",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":30,"type":31},[],246606123,[90,91,92,93],"A.数据字段的最小长度是64B","B.数据字段的最大长度是1500B","C.帧头部分长度是18B","D.帧的最大长度是1518B","8. 以下关于802.3帧长度的描述中,错误的是()",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":30,"type":31},[],246606127,[99,100,101,102],"A.局域网交换技术在高性能局域网中占据重要地位","B.交换机是交换式局域网的核心设备","C.交换机是总线型Ethernet的中心节点","D.交换机接收、过滤与转发数据帧","9. 以下关于交换式局域网概念的描述中,错误的是( )",{"answer":105,"createTime":5,"id":6,"options":106,"question":19,"source":30,"type":31},[],[8,9,10,11]]