📄 模拟考试12.htm
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1 ( 或桥 2 ）到达 LAN2，再经桥 2 ( 或桥 1 ）返回 LAN1 后被站 A 吸收<BR></TD></TR>
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<TD align=middle height=212 width=29>41 </TD>
<TD align=left height=212 width=607> 图一为两个局域网 LAN1 和 LAN2
通过网桥 1 和网桥 2 互连后形成的网络结构。设站 A
发送一个帧，但其目的地址均不在这两个网桥的地址转发表中，为了有效地解决该类问题，可以在每个网桥中引入生成树算法，这样一来__(19)__。 ©)
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<CENTER><IMG border=0 src="模拟考试12.files/200481394349wso3x8.gif">
</CENTER><BR>答： <INPUT class=radio name=text1679
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.网络资源也会得到充分利用<BR> <INPUT class=radio
name=text1679 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.网络的最佳路由也会得到确定<BR> <INPUT class=radio
name=text1679 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.也限制了网络规模<BR> <INPUT class=radio
name=text1679 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.也增加了网络延时<BR></TD></TR>
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<TD align=middle height=212 width=29>42 </TD>
<TD align=left height=212 width=607> 在使用路由器 R 的 TCP/IP
网络中，两主机通过一路由器互联，提供机器之间通信的层是__(22)__©) <BR>答： <INPUT class=radio
name=text1688 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.应用层<BR> <INPUT class=radio name=text1688
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.传输层<BR> <INPUT class=radio name=text1688
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=C>C.
IP层<BR> <INPUT class=radio name=text1688
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.网络接口层<BR></TD></TR>
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<TD align=middle height=212 width=29>43 </TD>
<TD align=left height=212 width=607> 对照 ISO/OSI
参考模型各个层中的网络安全服务，在数据链路层，可以采用__(27)__进行链路加密©) <BR>答： <INPUT
class=radio name=text1694 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.公钥基础<BR> <INPUT class=radio name=text1694
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.Kerberos 鉴别<BR> <INPUT class=radio
name=text1694 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.通信保密机 <BR> <INPUT class=radio name=text1694
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.CA
认证中心<BR></TD></TR>
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<TD align=middle height=212 width=29>44 </TD>
<TD align=left height=212 width=607> 对照 ISO/OSI
参考模型各个层中的网络安全服务，在网络层可以采用__(28)__来处理信息内外网络边界流动和建立透明的安全加密信道©) <BR>答：
<INPUT class=radio name=text1697 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.防窃听技<BR> <INPUT class=radio name=text1697
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.防火墙技术<BR> <INPUT class=radio name=text1697
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.防病毒技术<BR> <INPUT class=radio name=text1697
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.防拒认技术<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>45 </TD>
<TD align=left height=212 width=607> TCP
是一个面向连接的协议，它提供连接的功能是__(31)__的©) <BR>答： <INPUT class=radio
name=text1703 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
全双工<BR> <INPUT class=radio name=text1703
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.半双工<BR> <INPUT class=radio name=text1703
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.单工<BR> <INPUT class=radio name=text1703
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.单方向<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>46 </TD>
<TD align=left height=212 width=607> TCP
是一个面向连接的协议，为了提高效率，又引入了滑动窗口协议，协议规定重传__(33)__的分组©) <BR>答： <INPUT
class=radio name=text1708 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.未被确认及至窗口首端的所有分<BR> <INPUT class=radio
name=text1708 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.未被确认<BR> <INPUT class=radio name=text1708
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.未被确认及至退回N值的所有分组<BR> <INPUT class=radio
name=text1708 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.仅丢失的<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>47 </TD>
<TD align=left height=212 width=607> TCP
是一个面向连接的协议，为了提高效率，又引入了滑动窗口协议，这种分组的数量最多可以__(34)__©) <BR>答： <INPUT
class=radio name=text1710 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.是任意的<BR> <INPUT class=radio name=text1710
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.1个<BR> <INPUT class=radio name=text1710
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.大于滑动窗口的大小<BR> <INPUT class=radio
name=text1710 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.等于滑动窗口的大小<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>48 </TD>
<TD align=left height=212 width=607> SNMP
协议管理操作中管理代理主动向管理进程报告事件的操作是__(38)__。©) <BR>答： <INPUT class=radio
name=text1715 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.get-request<BR> <INPUT class=radio
name=text1715 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.get-response<BR> <INPUT class=radio
name=text1715 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.trap<BR> <INPUT class=radio name=text1715
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.set-request<BR></TD></TR>
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<TD align=middle height=212 width=29>49 </TD>
<TD align=left height=212 width=607> 在 ISO OSI/RM
基础上的公共管理信息服务/公共管理信息协议 CMIS/CMIP 是一个完整的网络管理协议族，网络管理应用进程使用 OSI
参考模型的__(39)__。©) <BR>答： <INPUT class=radio name=text1717
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.网络层<BR> <INPUT class=radio name=text1717
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.传输层<BR> <INPUT class=radio name=text1717
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.已表示层<BR> <INPUT class=radio name=text1717
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.应用层<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>50 </TD>
<TD align=left height=212 width=607> N-ISDN传输声音需要使用__(43)__©)
<BR>答： <INPUT class=radio name=text1724
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.A
通路<BR> <INPUT class=radio name=text1724
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=B>B.B
通路<BR> <INPUT class=radio name=text1724
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=C>C.C
通路<BR> <INPUT class=radio name=text1724
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=D>D.D
通路<BR></TD></TR>
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<TD align=middle height=212 width=29>51 </TD>
<TD align=left height=212 width=607>
N-ISDN一路话音占用的数据传输率是__(44)__©) <BR>答： <INPUT class=radio
name=text1726 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.3KHz<BR> <INPUT class=radio name=text1726
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.3.4KHz<BR> <INPUT class=radio name=text1726
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.64Kbps<BR> <INPUT class=radio name=text1726
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.128Kbps <BR></TD></TR>
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<TD align=middle height=212 width=29>52 </TD>
<TD align=left height=212 width=607> 当使用 RS232C
连接相关设备时，电缆的长度不应超过__(48)__米。©) <BR>答： <INPUT class=radio
name=text1727 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.3<BR> <INPUT class=radio name=text1727
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.12<BR> <INPUT class=radio name=text1727
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.15<BR> <INPUT class=radio name=text1727
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.50<BR></TD></TR>
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<TD align=middle height=212 width=29>53 </TD>
<TD align=left height=212 width=607>
下图为曼彻斯特编码(表示的数据可能为___(1)___©) <BR>
<CENTER><IMG border=0 src="模拟考试12.files/2004813165711.bmp">
</CENTER><BR>答： <INPUT class=radio name=text1968
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.10100<BR> <INPUT class=radio name=text1968
onblur="this.⌨️ 快捷键说明
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