[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$fpOSQkpj3xvP-KDeIX0q1OXFZVCffdk8XZZD85pQHFak":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":31,"type":32},[],"2025-05-28 14:50:41",191584184,[8,9,10,11],"仅I","仅I、II","仅II、III","II、III",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},39,"22a393d83ca67a242183486abfb4988f","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25b30343053994e8940089572d36015b.jpg","硬件及网络技术选讲","work_43963539","第5、6章作业:传输层 应用层","下列关于 UDP 协议的叙述中,正确的是( ).I. 提供无连接服务 II. 提供复用\u002F分用服务III. 通过差错校验,保障可靠数据传输",[21,33,42,50,56,64,71,80,83,90],{"answer":22,"createTime":23,"id":24,"options":25,"question":30,"source":31,"type":32},[],"2025-05-28 14:50:40",191584177,[26,27,28,29],"500","700","800","1000","主机甲与主机乙之间已建立一个 TCP 连接,主机甲向主机乙发送了两个连续的 TCP 段,分别包含 300 字节和 500 字节的有效载荷,第一个段的序列号为 200 ,主机乙正确接收到两个段后,发送给主机甲的确认序列号是( )","v1",0,{"answer":34,"createTime":23,"id":35,"options":36,"question":41,"source":31,"type":32},[],191584178,[37,38,39,40],"7 KB","8 KB","9 KB","16 KB","一个 TCP 连接总是以 1 KB 的最大段长发送 TCP 段,发送方有足够多的数据要发送.当拥塞窗口为 16 KB 时发生了超时,如果接下来的 4 个 RTT(往返时间)时间内的 TCP 段的传输都是成功的,那么当第 4 个 RTT 时间内发送的所有 TCP 段都得到肯定应答时,拥塞窗口大小是( )",{"answer":43,"createTime":23,"id":44,"options":45,"question":49,"source":31,"type":32},[],191584179,[29,46,47,48],"2000","3000","4000","主机甲和主机乙之间已建立了一个 TCP 连接,TCP 最大段长度为 1000 字节.若主机甲的当前拥塞窗口为 4000 字节,在主机甲向主机乙连续发送两个最大段后,成功收到主机乙发送的第一个段的确认段,确认段中通告的接收窗口大小为 2000 字节,则此时主机甲还可以向主机乙发送的最大字节数是( )",{"answer":51,"createTime":5,"id":52,"options":53,"question":55,"source":31,"type":32},[],191584180,[54,54,54,54],"","主机甲向主机乙发送一个 (SYN=1, seq=11220) 的 TCP 段,期望与主机乙建立 TCP 连接,若主机乙接受该连接请求,则主机乙向主机甲发送的正确的 TCP 段可能是( )",{"answer":57,"createTime":5,"id":58,"options":59,"question":63,"source":31,"type":32},[],191584181,[60,26,61,62],"300","1200","1400","主机甲与主机乙之间已建立一个 TCP 连接,主机甲向主机乙发送了 3 个连续的 TCP 段,分别包含 300 字节、400 字节和 500 字节的有效载荷,第 3 个段的序号为 900.若主机乙仅正确接收到第 1 和第 3 个段,则主机乙发送给主机甲的确认序号是( )",{"answer":65,"createTime":5,"id":66,"options":67,"question":70,"source":31,"type":32},[],191584182,[68,69,68,69],"2012","2013","主机甲与主机乙之间已建立一个TCP连接,双方持续有数据传输,且数据无差错与丢失.若甲收到1个来自乙的TCP段,该段的序号为 1913、确认序号为 2046、有效载荷为 100 字节,则甲立即发送给乙的TCP段的序号和确认序号分别是( )",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":31,"type":32},[],191584183,[75,76,77,78],"10KB","12KB","14KB","15KB","主机甲和主机乙已建立了TCP连接,甲始终以MSS=1KB大小的段发送数据,并一直有数据发送;乙每收到一个数据段都会发出一个接收窗口为10KB的确认段.若甲在t时刻发生超时时拥塞窗口为8KB,则从t时刻起,不再发生超时的情况下,经过10个RTT后,甲的发送窗口是( )",{"answer":81,"createTime":5,"id":6,"options":82,"question":19,"source":31,"type":32},[],[8,9,10,11],{"answer":84,"createTime":5,"id":85,"options":86,"question":89,"source":31,"type":32},[],191584185,[87,38,40,88],"1 KB","32 KB","主机甲和主机乙新建一个TCP连接,甲的拥塞控制初始阈值为32 KB,甲向乙始终以MSS=1 KB大小的段发送数据,并一直有数据发送;乙为该连接分配16 KB接收缓存,并对每个数据段进行确认,忽略段传输延迟.若乙收到的数据全部存入缓存,不被取走,则甲从连接建立成功时刻起,未发生超时的情况下,经过4个RTT后,甲的发送窗口是( )",{"answer":91,"createTime":5,"id":92,"options":93,"question":98,"source":31,"type":32},[],191584186,[94,95,96,97],"源端口号","目的端口号","长度","校验和","UDP 协议实现分用 (demultiplexing) 时所依据的头部字段是( )"]