📄 模拟考试13.htm
字号:
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.40．15．1．0／17<BR> <INPUT class=radio
name=text1578 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.40．15．2．0／17<BR> <INPUT class=radio
name=text1578 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.40．15．100．0／17<BR> <INPUT class=radio
name=text1578 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.40．15．128．0／17<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>16 </TD>
<TD align=left height=212 width=607>
采用可变长子网掩码技术可以把大的网络分成小的子网，例如把子网掩码为255．255．0．0的网络40．15．0．0分为两个子网，假设用户Xl有2000台主机，则至少应给他分配
(47) 个C类网络©) <BR>答： <INPUT class=radio name=text1579
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.4<BR> <INPUT class=radio name=text1579
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.8<BR> <INPUT class=radio name=text1579
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.10<BR> <INPUT class=radio name=text1579
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.16<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>17 </TD>
<TD align=left height=212 width=607>
采用可变长子网掩码技术可以把大的网络分成小的子网，如果分配给用户Xl的网络号为196．25．64．0，则指定给Xl的子网掩码为 (48) ©)
<BR>答： <INPUT class=radio name=text1581
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.255．255．255．0<BR> <INPUT class=radio
name=text1581 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.255．255．250．0<BR> <INPUT class=radio
name=text1581 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.255．255．248．0<BR> <INPUT class=radio
name=text1581 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.255．255．240．0<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>18 </TD>
<TD align=left height=212 width=607>
采用可变长子网掩码技术可以把大的网络分成小的子网，假设给用户X2分配的C类网络号为196．25．16．0～196．25．31．0，则X2的子网掩码应为
(49) ©) <BR>答： <INPUT class=radio name=text1583
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.255．255．255．0 <BR> <INPUT class=radio
name=text1583 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.255．255．250．0 <BR> <INPUT class=radio
name=text1583 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.255．255．248．0<BR> <INPUT class=radio
name=text1583 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.255．255．240．0<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>19 </TD>
<TD align=left height=212 width=607>
在Linux操作系统下安装网卡，如果操作系统没有内置的驱动程序，那么用户必须 (52) ©) <BR>答： <INPUT
class=radio name=text1588 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.用ifconfig命令配置网卡<BR> <INPUT class=radio
name=text1588 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.手工修改‘／dev／eth0’文件<BR> <INPUT class=radio
name=text1588 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.手工安装驱动程序且重新编译Linux内核<BR> <INPUT class=radio
name=text1588 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.重启操作系统<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>20 </TD>
<TD align=left height=212 width=607>
在自治系统内部的各个路由器之间，运行的是内部网关协议IGP。早期的IGP叫做_(56) ©) <BR>答： <INPUT
class=radio name=text1593 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.RIP<BR> <INPUT class=radio name=text1593
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.GGP<BR> <INPUT class=radio name=text1593
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.BGP<BR> <INPUT class=radio name=text1593
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.OSPF<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>21 </TD>
<TD align=left height=212 width=607>
在自治系统内部的各个路由器之间，运行的是内部网关协议IGP。它执行 (57) 。©) <BR>答： <INPUT class=radio
name=text1594 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.路由选择算法<BR> <INPUT class=radio name=text1594
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.距离矢量算法<BR> <INPUT class=radio name=text1594
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.链路状态算法<BR> <INPUT class=radio name=text1594
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.内部网关算法<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>22 </TD>
<TD align=left height=212 width=607>
在自治系统内部的各个路由器之间，运行的是内部网关协议IGP。在不同自治系统的路由器之间，运行外部网关协议EGP，典型的EGP是 (60) 。©)
<BR>答： <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.RIP<BR> <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.GGP<BR> <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.BGP<BR> <INPUT class=radio name=text1599
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.OSPP<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>23 </TD>
<TD align=left height=212 width=607> IEEE802.5令牌环（Tokenm
Ring）网中，时延是由__(1)__决定。©) <BR>答： <INPUT class=radio name=text1643
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.站点时延和信号传话时延<BR> <INPUT class=radio
name=text1643 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.令牌帧长短和数据帧长短<BR> <INPUT class=radio
name=text1643 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.电缆长度和站点个数<BR> <INPUT class=radio
name=text1643 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.数据传输单和信号传播速度<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>24 </TD>
<TD align=left height=212 width=607> 设有某一个令牌环网长度为 400 米，环上有
28 个站点，其数据传输率为 4MbpS，环上信号的传播速度为 200 米/μS，每个站点具有 1bit 时延，则环上可能存在的最小时延是©)
<BR>答： <INPUT class=radio name=text1645
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.1<BR> <INPUT class=radio name=text1645
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.8<BR> <INPUT class=radio name=text1645
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.20<BR> <INPUT class=radio name=text1645
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.24<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>25 </TD>
<TD align=left height=212 width=607> 设有某一个令牌环网长度为 400 米，环上有
28 个站点，其数据传输率为 4MbpS，环上信号的传播速度为 200 米/μS，每个站点具有 1bit 时延，则环上可能存在的最大时延是©)
<BR>答： <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.9<BR> <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.28<BR> <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.36<BR> <INPUT class=radio name=text1647
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.48<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>26 </TD>
<TD align=left height=212 width=607> 在一个带宽为
3KHZ、没有噪声的信道，一个带宽为 3KHZ、信噪比为 30dB 的信道。上述结果表明，__(8)__。©) <BR>答：
<INPUT class=radio name=text1655 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.有噪声信道比无噪声信道具有更大的带宽<BR> <INPUT class=radio
name=text1655 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.有噪声信道比无噪声信道可达到更高的极限数据传输率<BR> <INPUT
class=radio name=text1655 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.有噪声信道与无噪声信道没有可比性<BR> <INPUT class=radio
name=text1655 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.上述值都为极限值，条件不同，不能进行直接的比较<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>27 </TD>
<TD align=left height=212 width=607> 根据奈奎斯特第一定理，为了保证传输质量，为达到
3KbpS 的数据传输车需要的带宽为___(9)___。©) <BR>答： <INPUT class=radio
name=text1657 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.3KHz<BR> <INPUT class=radio name=text1657
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.6KHz<BR> <INPUT class=radio name=text1657
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.2KHz<BR> <INPUT class=radio name=text1657
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