[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$flLNuZqDnqPsJx39zuJs-C7noFlb2-s1H9PxsX2LvCQA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-06-06 16:32:35",195421756,[8,9,10,11],"IPv4分组头的长度是可变的","协议字段表示IP的版本,值为4表示IPv4","生存时间字段值表示一个分组可以经过的最多的跳数","分组有长度字段以4B为单位,总长度字段以字节为单位",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},25,"64c0bd5c6daf1acc913ff17e306bf3bd","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F25aa1625bc7cdbaa5d76e7df7785d3fa.png","计算机网络技术 2022-2023（2）","exam_156968961","网络层测试","以下关于IP分组结构的描述中,错误的是()",[21,32,41,50,59,62,71,80,89,98],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],195421752,[25,26,27,28],"物理层、数据链路层、网络层协议可以不同,而网络层以上的高层协议必须相同","物理层协议可以不同,而数据链路层及其以上的高层协议必须相同","物理层、数据链路层、网络层及高层协议都可以不同","物理层、数据链路层协议可以不同,而数据链路层以上的高层协议必须相同","在路由器互连的多个局域网的结构中,要求每个局域网()","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],195421753,[36,37,38,39],"运输层","应用层","网络层","物理层","在数据传输过程中路由是在()实现的",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],195421754,[45,46,47,48],"IP地址-→MAC地址","IPV6地址-→IPV4地址","MAC地址-→IP地址","IPV4地址-→IPV6地址","ARP (地址解析协议)的主要功能是实现_____到的转换",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],195421755,[54,55,56,57],"首部长度字段和总长度字段都以8bit为计数单位","首部长度字段以8bit为计数单位,总长度字段以32bit为计数单位","首部长度字段和总长度字段都以32bit为计数单位","首部长度字段以32bit为计数单位,总长度字段以8bit为计数单位","IPv4分组首部中有两个有关长度的字段:首部长度和总长度,其中()",{"answer":60,"createTime":5,"id":6,"options":61,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":63,"createTime":5,"id":64,"options":65,"question":70,"source":30,"type":31},[],195421758,[66,67,68,69],"30或32, 2046, 255.255.250.0","30或32, 2048, 255.255.248.0","30或32, 2046, 255.255.248.0","31或32, 2046, 255.255.248.0","设申请到标准的B类IP地址网络地址为172.16.0.0, 当用5位表示子网时,最多可设________ (个)子网,每子网可有_______ (台)主机,子网掩码是____",{"answer":72,"createTime":5,"id":73,"options":74,"question":79,"source":30,"type":31},[],195421760,[75,76,77,78],"采用无类比编制CIDR","采用IPv6","采用网络地址转换NAT","划分子网","为了解决IP地址耗尽的问题,可以采用以下一些措施,其中治本的是()",{"answer":81,"createTime":5,"id":82,"options":83,"question":88,"source":30,"type":31},[],195421762,[84,85,86,87],"20B","32B","60B","64B","下列哪一个不可能是IPv4数据包首部长度?( )",{"answer":90,"createTime":5,"id":91,"options":92,"question":97,"source":30,"type":31},[],195421764,[93,94,95,96],"20","32","40","64","IP数据报首部的前一部分是固定长度,共( )字节,是所有IP数据报必须具有的",{"answer":99,"createTime":5,"id":100,"options":101,"question":106,"source":30,"type":31},[],195421766,[102,103,104,105],"a和d","a和b","c和d","b和c","下列协议中属于网络层协议的是()a.IP,b.TCP,c.FTP,d.( )"]