[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$f5kS-XShJ5CnWe-mdpa5RtSLtkWGUoZ0oZ2MwE3hvDc8":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":8,"question":15,"related":16,"source":22,"type":23},[],"2023-06-14 13:11:03",63799371,[],{"count":9,"courseId":10,"courseImg":11,"courseName":12,"workId":13,"workName":14},15,"d5b301444dd6ad3cee766bd9bebc865e","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fbd9900434965d4a07444c134b8d6a26f.jpg","网络及其计算（计算机网络）","work_26918501","第四章 课前预习题","IGP 和 EGP 这两类协议的主要区别是什么",[17,24,29,34,39,42,47,52,57,62],{"answer":18,"createTime":5,"id":19,"options":20,"question":21,"source":22,"type":23},[],63799367,[],"IP 地址方案与我国的电话号码体制的主要不同点是什么","v1",4,{"answer":25,"createTime":5,"id":26,"options":27,"question":28,"source":22,"type":23},[],63799368,[],"一个 3200 位长的 TCP 报文传到 IP 层,加上 160 位的首部后成为数据报.下面的互联网由两个局域网通过路由器连接起来. 但第二个局域网所能传送的最长数据帧中的数据部分只有 1200 位.因此数据报在路 由器必须进行分片.试问第二个局域网向其上层要传送多少比特的数据(这里的 "数据 "当然指的是局域网 看见的数据)",{"answer":30,"createTime":5,"id":31,"options":32,"question":33,"source":22,"type":23},[],63799369,[],"与下列掩码相对应的网络前缀各有多少位? (1)192.0.0.0;(2)240.0.0.0;(3)255.254.0.0;(4)255.255.255.252",{"answer":35,"createTime":5,"id":36,"options":37,"question":38,"source":22,"type":23},[],63799370,[],"网络互连有何实际意义?进行网络互连时,有哪些共同的问题需要解决",{"answer":40,"createTime":5,"id":6,"options":41,"question":15,"source":22,"type":23},[],[],{"answer":43,"createTime":5,"id":44,"options":45,"question":46,"source":22,"type":23},[],63799372,[],"下面的前缀中的哪一个和地址 152.7.77.159 及 152.31.47.252 都匹配?请说明理由. (1)152.40\u002F13; (2)153.40\u002F9;(3)152.64\u002F12;(4)152.0\u002F11",{"answer":48,"createTime":5,"id":49,"options":50,"question":51,"source":22,"type":23},[],63799373,[],"作为中间设备,转发器、网桥、路由器和网关有何区别",{"answer":53,"createTime":5,"id":54,"options":55,"question":56,"source":22,"type":23},[],63799374,[],"在因特网中将 IP 数据报分片传送的数据报在最后的目的主机进行组装. 还可以有另一种做法, 即数据报 片通过一个网络就进行一次组装.是比较这两种方法的优劣",{"answer":58,"createTime":5,"id":59,"options":60,"question":61,"source":22,"type":23},[],63799375,[],"某单位分配到一个地址块 136.23.12.64\u002F26.现在需要进一步划分为 4 个一样大的子网.试问 : (1)每一个子网的网络前缀有多长? (2)每一个子网中有多少个地址? (3)每一个子网的地址是什么? (4)每一个子网可分配给主机使用的最小地址和最大地址是什么",{"answer":63,"createTime":5,"id":64,"options":65,"question":66,"source":22,"type":23},[],63799376,[],"某单位分配到一个 B 类 IP 地址,其 net-id 为 129.250.0.0.该单位有 4000 台机器,分布在 16 个不同的地点.如选用子网掩码为 255.255.255.0,试给每一个地点分配一个子网掩码号,并算出每个地点主机号码的 最小值和最大值"]