📄 模拟考试17.htm
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value=D>D.目标不可到达<BR></TD></TR>
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<TD align=middle height=212 width=29>16 </TD>
<TD align=left height=212 width=607> IPv6是下一代IP协议。IPv6的基本报头包含
(26) 个字节，此外还可以包含多今扩展报头。©) <BR>答： <INPUT class=radio name=text1544
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.16<BR> <INPUT class=radio name=text1544
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.32<BR> <INPUT class=radio name=text1544
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.40<BR> <INPUT class=radio name=text1544
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.60<BR></TD></TR>
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<TD align=middle height=212 width=29>17 </TD>
<TD align=left height=212 width=607> IPv6是下一代IP协议。一个数据流由 (28)
命名。©) <BR>答： <INPUT class=radio name=text1548
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.源地址、目标地址和流名称<BR> <INPUT class=radio
name=text1548 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.源地址、目标地址和流序号<BR> <INPUT class=radio
name=text1548 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.源地址、端口号和流序号<BR> <INPUT class=radio
name=text1548 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.MAC地址、端口号和流名称<BR></TD></TR>
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<TD align=middle height=212 width=29>18 </TD>
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在IPv6中，地址被扩充为128位，并且为IPv4保留了一部分地址空间。按照IPv6的地址表示方法，以下地址中属于IPv4地址的是 (29) 。©)
<BR>答： <INPUT class=radio name=text1549
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.0000：0000：0000：0000：0000：FFFF：1234：1180<BR>
<INPUT class=radio name=text1549 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.0000：0000：0000：1111：111t：FFFF：1234：1180<BR>
<INPUT class=radio name=text1549 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.0000：0000：FFFF：FFFF：FFFF：FFFF：1234：1180<BR>
<INPUT class=radio name=text1549 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.FFFF：FFFF：FFFF：FFFF：FFFF：FFFF：1234：1180<BR></TD></TR>
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<TD align=middle height=212 width=29>19 </TD>
<TD align=left height=212 width=607>
A向B发送消息P，并使用公钥体制进行数字签名。Kerberos是MIT为校园网设计的身份认证系统，该系统利用智能卡产生 (33)
密钥，可以防止窃听者捕获认证信息。©) <BR>答： <INPUT class=radio name=text1555
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.私有<BR> <INPUT class=radio name=text1555
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.加密<BR> <INPUT class=radio name=text1555
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.一次性<BR> <INPUT class=radio name=text1555
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.会话<BR></TD></TR>
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<TD align=middle height=212 width=29>20 </TD>
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A向B发送消息P，并使用公钥体制进行数字签名。另外报文中还加入了 (35) ，用于防止重发攻击(replay attack)。©) <BR>答：
<INPUT class=radio name=text1559 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.伪随机数<BR> <INPUT class=radio name=text1559
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.时间标记<BR> <INPUT class=radio name=text1559
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.私有密钥<BR> <INPUT class=radio name=text1559
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.数字签名<BR></TD></TR>
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<TD align=middle height=212 width=29>21 </TD>
<TD align=left height=212 width=607>
IEEE802．11定义了无线局域网的两种工作模式，其中的 (41)
模式是一种点对点连接的网络，不需要无线接入点和有线网络的支持，用无线网卡连接的设备之间可以直接通信。©) <BR>答： <INPUT
class=radio name=text1570 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.Roaming<BR> <INPUT class=radio name=text1570
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.AdHoc<BR> <INPUT class=radio name=text1570
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.Infrastructure<BR> <INPUT class=radio
name=text1570 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.DiffuselR<BR></TD></TR>
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<TD align=middle height=212 width=29>22 </TD>
<TD align=left height=212 width=607>
IEEE802．11的物理层规定了三种传输技术，即红外技术、直接序列扩频(DSSS)和跳频扩频(FHSS)技术，后两种扩频技术都工作在 (42)
的ISM频段。©) <BR>答： <INPUT class=radio name=text1572
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.600MHz<BR> <INPUT class=radio name=text1572
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.800MHz<BR> <INPUT class=radio name=text1572
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.2．4GHz<BR> <INPUT class=radio name=text1572
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.19．2GHz<BR></TD></TR>
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<TD align=middle height=212 width=29>23 </TD>
<TD align=left height=212 width=607> IEEE802．11
MAC层具有多种功能，用于支持多媒体应用的是 (44) 功能©) <BR>答： <INPUT class=radio
name=text1576 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.BCF <BR> <INPUT class=radio name=text1576
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.DCF<BR> <INPUT class=radio name=text1576
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.PCF<BR> <INPUT class=radio name=text1576
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.QCF<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>24 </TD>
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最新提出的IEEE802．1la标准可提供的最高数据速率为 (45) 。©) <BR>答： <INPUT class=radio
name=text1577 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.1Mb／s<BR> <INPUT class=radio name=text1577
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.2Mb／s<BR> <INPUT class=radio name=text1577
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.5.5Mb／s<BR> <INPUT class=radio name=text1577
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.54Mb／s<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>25 </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>
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<TD align=middle height=212 width=29>26 </TD>
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为一块设备名为eth0的网卡分配p地址和子网掩码的命令是： (53) ©) <BR>答： <INPUT class=radio
name=text1590 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.serserialeth0202．112．58．200netmask255．255．255．0<BR>
<INPUT class=radio name=text1590 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.ifconfigeth0202．112．58．200netmask255．255．255．0<BR>
<INPUT class=radio name=text1590 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.minicometh0202．112．58．200netmask255．255．255．0<BR>
<INPUT class=radio name=text1590 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.mounteth0202．112．58．200netmask255．255．255．0<BR></TD></TR>
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<TD align=middle height=212 width=29>27 </TD>
<TD align=left height=212 width=607>
如果不打算使用DNS或者NIS进行地址解析，则必须将所有的主机名都放入文件 (54) 中©) <BR>答： <INPUT
class=radio name=text1591 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.／dev／hosts<BR> <INPUT class=radio
name=text1591 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.／dev／networks<BR> <INPUT class=radio
name=text1591 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.／etc／hosts<BR> <INPUT class=radio
name=text1591 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.／em／networks<BR></TD></TR>
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<TD align=middle height=212 width=29>28 </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'"
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