成考院校在线答案
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:20.0000pt;mso-line-height-rule:exactly;">27、<span style="mso-spacerun:'yes';font-family:微软雅黑;font-size:12.0000pt;mso-font-kerning:1.0000pt;">以下关于<font face="Times New Roman">IPv6</font><font face="微软雅黑">基本报头的描述中，错误的是（ ）</font></span><span style="font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">40、<span style="mso-spacerun:'yes';font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;">采用<font face="Times New Roman">CSMA/CD</font><font face="微软雅黑">介质访问控制方法的局域网适用于办公自动化环境。这类局域网在何种网络通信负荷情况下表现出较好的吞吐率与延迟特性？（ ）。</font></span><span style="font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">39、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">以下关于<font face="Times New Roman">HDLC</font><font face="宋体">信息帧的描述中，错误的是</font><font face="Times New Roman">( )</font><font face="宋体">。</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:20.0000pt;mso-line-height-rule:exactly;">13、<span style="mso-spacerun:'yes';font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;">应用层<font face="Times New Roman">DNS</font><font face="微软雅黑">协议主要用于实现哪种网络服务功能？（ ）。</font></span><span style="font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:125%;">17、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">TCP/IP<font face="宋体">参考模型中的主机—网络层对应于</font><font face="Times New Roman">OSI</font><font face="宋体">参考模型的（ ）。</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p><p class="MsoNormal" style="line-height:125%;"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">Ⅰ<font face="Times New Roman">.</font><font face="宋体">物理层</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p><p class="MsoNormal" style="line-height:125%;"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">Ⅱ<font face="Times New Roman">.</font><font face="宋体">数据链路层</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p><p class="MsoNormal"><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">Ⅲ<font face="Times New Roman">.</font><font face="宋体">网络层</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">28、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">以下关于<font face="Times New Roman">IP</font><font face="宋体">分组报头中</font><font face="Times New Roman">TTL</font><font face="宋体">字段的描述中</font><font face="Times New Roman">,</font><font face="宋体">错误的（ ）</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:20.0000pt;mso-line-height-rule:exactly;">30、<span style="mso-spacerun:'yes';font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;">在数据通信中，利用电话交换网与调制解调器进行数据传输的方法属于（ ）。</span><span style="font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:20.0000pt;mso-line-height-rule:exactly;">5、<span style="mso-spacerun:'yes';font-family:微软雅黑;font-weight:normal;font-size:10.5000pt;mso-font-kerning:1.0000pt;">在中继系统中，中继器处于（</span><span style="font-family:微软雅黑;font-weight:normal;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> </span><span style="mso-spacerun:'yes';font-family:微软雅黑;font-weight:normal;font-size:10.5000pt;mso-font-kerning:1.0000pt;">）。</span><span style="font-family:微软雅黑;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal">31、<span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">以下有关<font face="Times New Roman">UDP</font><font face="宋体">校验和的描述中，错误的是（</font></span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> </span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">）。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>
- 2022-09-12 [单选] <p class="MsoNormal" style="line-height:20.0000pt;mso-line-height-rule:exactly;">34、<span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">如果发送的数据比特序列为</span><span style="mso-spacerun:'yes';font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;">100100000</span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">，生成多项式<font face="Times New Roman">G(x)</font><font face="宋体">的二进制比特序列长度为</font><font face="Times New Roman">11010010</font><font face="宋体">，那么在发送的数据比特序列中</font><font face="Times New Roman">CRC</font><font face="宋体">校验比特序列为（ </font></span><span style="font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;"> </span><span style="mso-spacerun:'yes';font-family:'Times New Roman';font-size:10.5000pt;mso-font-kerning:1.0000pt;">）。</span><span style="font-family:Microsoft Yahei;font-size:10.5000pt;mso-font-kerning:1.0000pt;"> <o:p></o:p></span></p>