网络协议教学实验系统（TCP&IP协议实验教程）参考答案(win7版)_网络协议_实验指导书

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6386ea6ee53e5839a709bf6d/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6386ea6ee53e5839a709bf6d/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">网络工程实验系列之</div><div class="t m0 x2 h4 y3 ff1 fs1 fc0 sc0 ls0 ws0">网络协议教学实验教程</div><div class="t m0 x3 h5 y4 ff2 fs2 fc0 sc1 ls0 ws0">Teaching Experimental System for Network Protocol</div><div class="t m0 x4 h6 y5 ff1 fs4 fc0 sc0 ls0 ws0">（TCP/IP协议篇）</div><div class="t m0 x5 h6 y6 ff1 fs4 fc0 sc0 ls0 ws0">参考答案</div><div class="t m0 x6 h6 y7 ff1 fs4 fc0 sc1 ls0 ws0">吉林中软吉大信息技术有限公司</div></div></div><div class="pi" data-data='{"ctm":[1.839080,0.000000,0.000000,1.839080,0.000000,0.000000]}'></div></div> </body> </html>

<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6386ea6ee53e5839a709bf6d/bg2.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x7 h6 y8 ff1 fs4 fc0 sc0 ls0 ws0">目 录</div><div class="t m0 x8 h7 y9 ff1 fs5 fc0 sc1 ls0 ws0">第部分 网络协议</div><div class="t m0 x8 h7 ya ff1 fs5 fc0 sc1 ls0 ws0">实验标准和以太网</div><div class="t m0 x8 h7 yb ff1 fs5 fc0 sc1 ls0 ws0">实验地址解析协议</div><div class="t m0 x8 h7 yc ff1 fs5 fc0 sc1 ls0 ws0">实验网际协议</div><div class="t m0 x8 h7 yd ff1 fs5 fc0 sc1 ls0 ws0">实验控制报文协议</div><div class="t m0 x8 h7 ye ff1 fs5 fc0 sc1 ls0 ws0">实验用户数据报协议</div><div class="t m0 x8 h7 yf ff1 fs5 fc0 sc1 ls0 ws0">实验传输控制协议</div><div class="t m0 x8 h7 y10 ff1 fs5 fc0 sc1 ls0 ws0">实验协议的高级特性</div><div class="t m0 x8 h7 y11 ff1 fs5 fc0 sc1 ls0 ws0">实验简单网络管理协议</div><div class="t m0 x8 h7 y12 ff1 fs5 fc0 sc1 ls0 ws0">实验动态主机配置协议 </div><div class="t m0 x8 h7 y13 ff1 fs5 fc0 sc1 ls0 ws0">实验域名服务</div><div class="t m0 x8 h7 y14 ff1 fs5 fc0 sc1 ls0 ws0">实验网络地址转换</div><div class="t m0 x8 h7 y15 ff1 fs5 fc0 sc1 ls0 ws0">实验超文本传输协议 </div><div class="t m0 x8 h7 y16 ff1 fs5 fc0 sc1 ls0 ws0">实验远程登录与文件传送协议!与"</div><div class="t m0 x8 h7 y17 ff1 fs5 fc0 sc1 ls0 ws0">实验电子邮件协议、#和</div><div class="t m0 x8 h7 y18 ff1 fs5 fc0 sc1 ls0 ws0">实验$#应用及$%"协议</div><div class="t m0 x8 h7 y19 ff1 fs5 fc0 sc1 ls0 ws0">实验路由信息协议</div><div class="t m0 x8 h7 y1a ff1 fs5 fc0 sc1 ls0 ws0">实验开放式最短路径优先协议#"&</div><div class="t m0 x8 h7 y1b ff1 fs5 fc0 sc1 ls0 ws0">实验开放式最短路径优先协议#"'</div><div class="t m0 x8 h7 y1c ff1 fs5 fc0 sc1 ls0 ws0">实验代理</div><div class="t m0 x8 h7 y1d ff1 fs5 fc0 sc1 ls0 ws0">实验地址欺骗</div><div class="t m0 x8 h7 y1e ff1 fs5 fc0 sc1 ls0 ws0">实验重定向</div><div class="t m0 x8 h7 y1f ff1 fs5 fc0 sc1 ls0 ws0">实验与端口扫描</div><div class="t m0 x8 h7 y20 ff1 fs5 fc0 sc1 ls0 ws0">实验路由欺骗</div><div class="t m0 x8 h7 y21 ff1 fs5 fc0 sc1 ls0 ws0">实验冲突与网络广播风暴</div><div class="t m0 x9 h8 y22 ff4 fs6 fc0 sc1 ls0 ws0"></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' 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m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.839080,0.000000,0.000000,1.839080,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6386ea6ee53e5839a709bf6d/bg3.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x8 h7 y23 ff1 fs5 fc0 sc1 ls0 ws0">实验路由环与网络回路</div><div class="t m0 x8 h7 y24 ff1 fs5 fc0 sc1 ls0 ws0">第部分 网络协议</div><div class="t m0 x8 h7 y25 ff1 fs5 fc0 sc1 ls0 ws0">实验初识</div><div class="t m0 x8 h7 y26 ff1 fs5 fc0 sc1 ls0 ws0">实验报头</div><div class="t m0 x8 h7 y27 ff1 fs5 fc0 sc1 ls0 ws0">实验</div><div class="t m0 x8 h7 y28 ff1 fs5 fc0 sc1 ls0 ws0">实验多播</div><div class="t m0 x8 h7 y29 ff1 fs5 fc0 sc1 ls0 ws0">实验邻居发现协议</div><div class="t m0 x8 h7 y2a ff1 fs5 fc0 sc1 ls0 ws0">实验路由</div><div class="t m0 x8 h7 y2b ff1 fs5 fc0 sc1 ls0 ws0">实验与共存机制</div><div class="t m0 x8 h7 y2c ff1 fs5 fc0 sc1 ls0 ws0">实验地址自动配置</div><div class="t m0 x8 h7 y2d ff1 fs5 fc0 sc1 ls0 ws0">实验</div><div class="t m0 x8 h7 y2e ff1 fs5 fc0 sc1 ls0 ws0">实验应用层实验</div><div class="t m0 x8 h7 y2f ff1 fs5 fc0 sc1 ls0 ws0">实验安全技术</div><div class="t m0 xa h8 y22 ff4 fs6 fc0 sc1 ls0 ws0"></div></div><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a><a class="l" rel='nofollow' onclick='return false;'><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.839080,0.000000,0.000000,1.839080,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6386ea6ee53e5839a709bf6d/bg4.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 xb h9 y30 ff1 fs6 fc0 sc1 ls0 ws0">网络协议教学实验教程% 协议篇参考答案</div><div class="t m0 xc h3 y31 ff1 fs0 fc0 sc0 ls0 ws0">第1部分 IPv4网络协议</div><div class="t m0 xd h6 y32 ff1 fs4 fc0 sc0 ls0 ws0">实验1 IEEE802标准和以太网</div><div class="t m0 xe ha y33 ff1 fs7 fc0 sc0 ls0 ws0">练习2 理解MAC地址的作用 </div><div class="t m0 x8 h7 y34 ff3 fs5 fc0 sc1 ls0 ws0">3. 参考答案</div><div class="t m0 xf h9 y35 ff1 fs6 fc0 sc1 ls0 ws0">本机地址 源地址 目的地址</div><div class="t m0 x10 h9 y36 ff1 fs6 fc0 sc1 ls0 ws0">主机$ 主机$的 主机的 主机$的</div><div class="t m0 x10 h9 y37 ff1 fs6 fc0 sc1 ls0 ws0">主机 主机的 主机的 主机的</div><div class="t m0 x10 h9 y38 ff1 fs6 fc0 sc1 ls0 ws0">主机" 主机"的 主机的 主机"的</div><div class="t m0 x3 h7 y39 ff1 fs5 fc0 sc0 ls0 ws0">思考问题：</div><div class="t m0 x8 h7 y3a ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y3b ff1 fs5 fc0 sc1 ls0 ws0">物理层</div><div class="t m0 x8 h7 y3c ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y3d ff1 fs5 fc0 sc1 ls0 ws0">以太网的帧格式有两种标准，一种是()*，另一种是的</div><div class="t m0 x8 h7 y3e ff1 fs5 fc0 sc1 ls0 ws0">标准。两种格式的帧可以依据协议类型或数据长度字段的值进行区分。如果此帧是(</div><div class="t m0 x8 h7 y3f ff4 fs5 fc0 sc1 ls0 ws0">)*标准格式帧，则协议类型或数据长度字段的值大于；如果此帧是</div><div class="t m0 x8 h7 y40 ff4 fs5 fc0 sc1 ls0 ws0">标准格式帧，则协议类型或数据长度字段的值小于。</div><div class="t m0 x11 ha y41 ff1 fs7 fc0 sc0 ls0 ws0">练习3 编辑并发送MAC广播帧</div><div class="t m0 x8 h7 y42 ff4 fs5 fc0 sc1 ls0 ws0">参考答案</div><div class="t m0 x3 h7 y43 ff1 fs5 fc0 sc1 ls0 ws0">该地址为广播地址，作用是完成一对多的通信方式，即一个数据帧可发送给同一网段</div><div class="t m0 x8 h7 y44 ff1 fs5 fc0 sc1 ls0 ws0">内的所有节点。</div><div class="t m0 x3 h7 y45 ff1 fs5 fc0 sc0 ls0 ws0">思考问题：</div><div class="t m0 x8 h7 y46 ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y47 ff1 fs5 fc0 sc1 ls0 ws0">可以</div><div class="t m0 xa h8 y22 ff4 fs6 fc0 sc1 ls0 ws0"></div></div></div><div class="pi" data-data='{"ctm":[1.839080,0.000000,0.000000,1.839080,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6386ea6ee53e5839a709bf6d/bg5.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 xb h9 y30 ff1 fs6 fc0 sc1 ls0 ws0">网络协议教学实验教程% 协议篇参考答案</div><div class="t m0 x8 h7 y23 ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y48 ff4 fs5 fc0 sc1 ls0 ws0">广播帧会发送给同一网段的所有主机。</div><div class="t m0 x12 ha y49 ff1 fs7 fc0 sc0 ls0 ws0">练习4 编辑并发送LLC帧</div><div class="t m0 x8 hb y4a ff4 fs5 fc0 sc1 ls0 ws0"></div><div class="t m0 x3 h7 y4b ff4 fs5 fc0 sc1 ls0 ws0">+参考答案</div><div class="t m0 x13 h9 y4c ff1 fs6 fc0 sc1 ls0 ws0">帧类型 发送序号（） 接受序号（）</div><div class="t m0 x14 h9 y4d ff4 fs6 fc0 sc1 ls0 ws0">（信息帧）</div><div class="t m0 x15 h8 y4e ff4 fs6 fc0 sc1 ls0 ws0"> </div><div class="t m0 x3 h7 y4f ff4 fs5 fc0 sc1 ls0 ws0">+参考答案</div><div class="t m0 x3 h7 y50 ff1 fs5 fc0 sc1 ls0 ws0">这一字段定义为长度或类型字段。如果字段的值小于，它就是长度字段，用于定</div><div class="t m0 x8 h7 y51 ff1 fs5 fc0 sc1 ls0 ws0">义下面数据字段的长度；另一方面，如果字段的值大于，它定义一个封装在帧中的</div><div class="t m0 x8 h7 y52 ff4 fs5 fc0 sc1 ls0 ws0">分组的类型。</div><div class="t m0 x3 h7 y53 ff1 fs5 fc0 sc0 ls0 ws0">思考问题：</div><div class="t m0 x8 h7 y54 ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y55 ff1 fs5 fc0 sc1 ls0 ws0">可以通过改变控制字段的长度来编辑!!帧的类型。对于信息帧和监控帧，控制字段为</div><div class="t m0 x8 h7 y56 ff4 fs5 fc0 sc1 ls0 ws0">字节长，而对于无编号帧，控制字段为字节长。</div><div class="t m0 x8 h7 y57 ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y58 ff1 fs5 fc0 sc1 ls0 ws0">以太网的最短帧长度为字节，对于长度不够字节的数据帧，会使用在帧末尾补</div><div class="t m0 x8 h7 y59 ff1 fs5 fc0 sc1 ls0 ws0">的方法填充到最短帧长度。</div><div class="t m0 x8 h7 y5a ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y5b ff1 fs5 fc0 sc1 ls0 ws0">出于厂商们在商业上的激烈竞争，的委员会未能形成一个统一的、最佳的局</div><div class="t m0 x8 h7 y5c ff1 fs5 fc0 sc1 ls0 ws0">域网标准，而是被迫制定了几个不同标准，如令牌总线网、令牌环网等。为了</div><div class="t m0 x8 h7 y5d ff1 fs5 fc0 sc1 ls0 ws0">使数据链路层能更好地适应多种局域网标准，委员会就将局域网的数据链路层拆成两</div><div class="t m0 x8 h7 y5e ff1 fs5 fc0 sc1 ls0 ws0">个子层，即逻辑链路控制!!子层和媒体接入控制子层。与接入到传输媒体有关的内</div><div class="t m0 x8 h7 y5f ff5 fs5 fc0 sc1 ls0 ws0">容都放在子层，而!!子层与传输媒体无关，不管采用何种协议的局域网对!!子层</div><div class="t m0 x8 h7 y60 ff1 fs5 fc0 sc1 ls0 ws0">来说都是透明的。（摘自《计算机网络》 ）</div><div class="t m0 x8 h7 y61 ff4 fs5 fc0 sc1 ls0 ws0">参考答案：</div><div class="t m0 x3 h7 y62 ff1 fs5 fc0 sc1 ls0 ws0">传统的以太网是共享性局域网，采用载波侦听多路访问%冲突检测%协议。最</div><div class="t m0 x8 h7 y63 ff1 fs5 fc0 sc1 ls0 ws0">小帧长必须大于整个网络的最大时延位（最大时延时间内可以传输的数据位）。</div><div class="t m0 x3 h7 y64 ff1 fs5 fc0 sc1 ls0 ws0">如果帧长度太小，就可能出现网络上同时有两个帧在传播，就会产生冲突（碰撞）而</div><div class="t m0 x8 h7 y65 ff5 fs5 fc0 sc1 ls0 ws0">造成网络无法发送数据。</div><div class="t m0 x3 h7 y66 ff1 fs5 fc0 sc1 ls0 ws0">如果数据帧太长就会出现有的工作长时间不能发送数据，而且可能超出接收端的缓冲</div><div class="t m0 x8 h7 y67 ff1 fs5 fc0 sc1 ls0 ws0">区大小，造成缓冲区溢出。</div><div class="t m0 x3 h7 y68 ff1 fs5 fc0 sc1 ls0 ws0">由于多方面的限制，每个以太网帧长度都有最小的限制为,-.，最大限制不能超</div><div class="t m0 x8 h7 y69 ff1 fs5 fc0 sc1 ls0 ws0">过,-.，对于小于或者大于这个限制的以太网帧我们都可以视之为错误的数据帧，</div><div class="t m0 x8 h7 y6a ff1 fs5 fc0 sc1 ls0 ws0">一般的以太网转发设备会丢弃这些数据帧。（摘自网络）。</div><div class="t m0 xa h8 y22 ff4 fs6 fc0 sc1 ls0 ws0"></div></div></div><div class="pi" data-data='{"ctm":[1.839080,0.000000,0.000000,1.839080,0.000000,0.000000]}'></div></div>