[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fw0_IADczHVV7K_qrmBoZAl17FtFWzcu-2yNpgsf7eH0":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":16,"related":17,"source":27,"type":28},[],"2023-09-17 23:30:47",97305097,[8,9,10,11],"曼彻斯特编码","非归零码","差分曼彻斯特编码","都不是",{"courseId":13,"courseImg":14,"courseName":15},"094671ec19aca4ce7919ab1e33139f1a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F9c56a30a127faab33fb1e2a626988b68.jpg","网络技术","以下选项中不属于自含时钟编码的是( )",[18,29,38,47,56,59,68,77,86,95],{"answer":19,"createTime":5,"id":20,"options":21,"question":26,"source":27,"type":28},[],97305090,[22,23,24,25],"协议表示网络功能是什么","语义表示要做什么","语法表示要怎么做","时序表示做的顺序","以下关于网络协议与协议要素的描述中错误的是( )","v1",0,{"answer":30,"createTime":5,"id":31,"options":32,"question":37,"source":27,"type":28},[],97305092,[33,34,35,36],"网络体系结构是网络层次结构模型与各层协议的集合","所有的计算机网络都必须遵循OSI 体系结构","网络体系结构是抽象的,而实现网络协议的技术是具体的","网络体系结构对计算机网络应该实现的功能进行精确定义","以下关于网络体系结构概念的描述中错误的是( )",{"answer":39,"createTime":5,"id":40,"options":41,"question":46,"source":27,"type":28},[],97305094,[42,43,44,45],"各层之间相互独立","易于实现和标准化","允许隔层通信是OSI参考模型灵活性的标志","实现技术的变化都不会对整个系统工作产生影响","以下关于网络体系结构的研究方法优点的描述中错误的是( )",{"answer":48,"createTime":5,"id":49,"options":50,"question":55,"source":27,"type":28},[],97305096,[51,52,53,54],"统计时分多路复用的英文缩写是&quot;ATDM&quot;","统计时分多路复用允许动态地分配时间片","统计时分多路复用发出的数据不需要带有收发双方的地址","多路复用设备也可以采用存储转发方式来调节通信线路的传输速率","以下关于统计时分多路复用技术特征的描述中,错误的是( )",{"answer":57,"createTime":5,"id":6,"options":58,"question":16,"source":27,"type":28},[],[8,9,10,11],{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":27,"type":28},[],97305098,[63,64,65,66],"T1载波速率是针对脉冲编码调制PCM的时分多路复用而设计","T1系统将24 路数字语音信道复用在一条通信线路上","PCM编码器轮流将24路、每个信道8 比特的数字语音信号插入到帧中指定的位置","T1载波的数据传输速率为2.048 Mbps","以下关于T1载波的描述中,错误的是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":27,"type":28},[],97305099,[72,73,74,75],"ADSL主干线路使用光纤,HFC 主干线路使用宽带同轴电缆","ADSL用户接入使用电话线,HFC用户接入使用CATV电缆","连接ADSL Modem电话线是用户专用的,HFC用户接入CATV电缆是共享的","ADSL运营商可以对用户带宽做出承诺,HFC的运营商一般不会明确承诺","以下关于ADSL与HFC技术特点比较的描述中,错误的是( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":85,"source":27,"type":28},[],97305102,[81,82,83,84],"正确性","安全性","透明性","可靠性","帧传输中采取增加转移字符或0比特插入的目的是保证数据传输的( )",{"answer":87,"createTime":5,"id":88,"options":89,"question":94,"source":27,"type":28},[],97305105,[90,91,92,93],"4","5","6","7","0 比特插入\u002F删除方法规定在数据字段查出连续()个1 就其后增加一个0",{"answer":96,"createTime":5,"id":97,"options":98,"question":103,"source":27,"type":28},[],97305107,[99,100,101,102],"1101011001","101011011","11011011","1011001","如果 G(x)为11010010,以下4 个CRC 校验比特序列中只有哪个可能是正确的( )"]