[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fak9QtpwucTFGOHkEjmD8qcBktDUZXIW0hfycY_v2nlw":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2023-06-17 14:33:06",67590087,[8,9,10,11],"同步时分多路复用","统计时分多路复用","频分多路复用","波分多路复用",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},213,"38e7a4934c8e3eeb2e35685c506adc67","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fee881d18b12c522804479c04216c6668.jpg","工业控制网络","work_28218796","第二次作业","【单选题】在下列多路复用技术中,( )具有动态分配时隙的功能",[21,32,41,44,53,62,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],67590085,[25,26,27,28],"卫星通信通信距离大,覆盖的范围广","使用卫星通信易于实现广播通信和多址通信","卫星通信的好处在于不受气候的影响,误码率很低","通信费用高,延时较大是卫星通信的不足之处","【单选题】下面关于卫星通信的说法,错误的是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],67590086,[36,37,38,39],"减少信号衰减","减少电磁干扰辐射","减少物理损坏","减少电缆的阻抗","【单选题】电缆屏蔽的好处是( )",{"answer":42,"createTime":5,"id":6,"options":43,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":45,"createTime":5,"id":46,"options":47,"question":52,"source":30,"type":31},[],67590088,[48,49,50,51],"虚电路和数据报分别为面向无连接和面向连接的服务","数据报在网络中沿同一条路径传输,并且按发出顺序到达","虚电路在建立连接之后,分组中只需要携带连接标识","虚电路中的分组到达顺序可能与发出顺序不同","【单选题】下面有关虚电路和数据报的特性,正确的是( )",{"answer":54,"createTime":5,"id":55,"options":56,"question":61,"source":30,"type":31},[],67590089,[57,58,59,60],"交换技术","同步技术","编码技术","传输技术","【单选题】在数字通信中,使收发双方在时间基准上保持一致的技术是( )",{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],67590090,[66,67,68,69],"半双工通信","单工通信","数据报","全双工通信","【单选题】在同一时刻,通信双方可以同时发送数据的信道通信方式为( )",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],67590091,[75,76,77,78],"物理层和网络层","数据链路层和传输层","网络层和表示层","会话层和应用层","【单选题】国际标准化组织ISO提出的不基于特定机型、操作系统或公司的网络体系结构OSI模型中, 第一层和第三层分别为( )",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],67590092,[84,85,86,87],"TCP和FTP","IP和 UDP","RARP和 DNS","FTP和 SMTP","在下面给出的协议中,( )属于TCP\u002FIP的应用层协议",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],67590093,[93,94,95,96],"通过交换与路由,找到数据通过网络的最有效的路径","数据链路层的主要任务是提供一种可靠的通过物理介质传输数据的方法","将数据分解成帧,并按顺序传输帧,并处理接收端发回的确认帧","以太网数据链路层分为LLC和MAC子层,在 MAC子层使用CSMA\u002FCD的协议","在下面对数据链路层的功能特性描述中,不正确的是( )",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],67590094,[102,103,104,105],"报文、帧、比特","包、报文、比特","包、帧、比特","数据块、分组、比特","网络层、数据链路层和物理层传输的数据单位分别是( )"]