期中复习.htm

ht47r20遥控程序

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      <p><b><font size="6" color="#FFFFFF">6、信道的多路复用技术</font></b></p>
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        <b><font size="6" color="#FFFFFF"><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">（1）频分多路复用技术（</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">FDM</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）</span></font></b>
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        <b><font size="6" color="#FFFFFF"><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">（2）时分多路复用技术（</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">TDM</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）</span></font></b>
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        <b><font size="6" color="#FFFFFF"><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">（3）波分多路复用技术（</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">WDM</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）</span></font></b>
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      <p><b><font size="6" color="#FFFFFF">7、差错控制</font></b></p>
      <p><b><font size="6" color="#FFFFFF">（1）奇偶校验码（检错码、编码效率）</font></b></p>
      <p><b><font size="6" color="#FFFFFF">（2）CRC循环冗余码（纠错码）</font></b></td>
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      <p><b><font size="6" color="#FFFFFF">8、差错控制协议----</font></b></p>
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        <b><font size="6" color="#FFFFFF"><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">自动请求重发（</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">ARQ</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）</span></font></b><p:colorscheme
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          <div style="mso-line-spacing:&quot;100 20 0&quot;;mso-margin-left-alt:216;mso-char-wrap:
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            <b><font size="6" color="#FFFFFF"><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">（1</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）停等</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">ARQ</span></font></b>
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            <b><font size="6" color="#FFFFFF"><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">（</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">2</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）连续</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">ARQ</span></font></b>
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            <b><font size="6" color="#FFFFFF"><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </span>a</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">、拉回连续重发请求</span></font></b>
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            <b><font size="6" color="#FFFFFF"><span style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical"><span style="mso-spacerun: yes">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 
            </span>b</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">、选择连续重发请求</span></font></b>
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      <p><b><font size="6" color="#FFFFFF">9、数据传输的两种服务方式</font></b></p>
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          <b><font size="6" color="#FFFFFF"><span style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">（1</span><span style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">）</span><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">、面向连接的服务：------电路交换</span></font></b>
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          <b><font size="6" color="#FFFFFF"><span style="mso-spacerun: yes; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">&nbsp;  
          </span><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">三个过程：建立、通信、拆除链路（</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">FTP</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">、</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">TCP</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">）</span></font></b> 
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          <b><font size="6" color="#FFFFFF"><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">（2）</span><span lang="EN-US" style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">、面向无连接的服务：</span><span style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical"><span style="mso-spacerun: yes">  
          -----分组交换： </span>UDP</span><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">协议、</span><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">IP</span><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">分组</span></font></b> 
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    <td width="100%" height="118"><p:colorscheme 
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          <p><b><font size="6" color="#FFFFFF"><span lang="EN-US" style="mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical; mso-fareast-language: ZH-CN">10、HDLC</span><span style="font-family: 宋体; mso-fareast-font-family: 宋体; mso-hansi-font-family: Times New Roman; layout-flow: vertical">的帧格式：标志字段、地址字段、控制字段、信息字段、帧校验字段</span></font></b> 
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          <b><font size="6" color="#FFFFFF"><img border="0" src="期中2.gif" width="712" height="48"></font></b> 
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    <td width="100%" height="18"><b><font size="6" color="#FFFFFF">11、路由器的工作原理及路由选择的基本算法。</font></b></td>
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    <td width="100%" height="18"><font size="6" color="#FFFFFF"><b>12、ISO/OSI参考模型中每个层次的相应功能。</b></font>
      <p><font size="6" color="#FFFFFF"><b>13、OSI参考模型中物理层的基本物理特性。</b></font></td>
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