📄 模拟考试21.htm
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onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.下一报头<BR> <INPUT class=radio name=text1547
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.8h数限制<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>16 </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>
<TR class=trh1>
<TD align=middle height=212 width=29>17 </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。设E表示公钥，D表示私钥，则B要保留的证据是 (31) 。©) <BR>答： <INPUT
class=radio name=text1552 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.EA(P)<BR> <INPUT class=radio name=text1552
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.EB(P)<BR> <INPUT class=radio name=text1552
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.DA(P)<BR> <INPUT class=radio name=text1552
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.DB(P)<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>18 </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。基于数论原理的RSA算法的安全性建立在 (32) 的基础上。©) <BR>答：
<INPUT class=radio name=text1553 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.大数难以分解因子<BR> <INPUT class=radio
name=text1553 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.大数容易分解因子<BR> <INPUT class=radio
name=text1553 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.容易获得公钥<BR> <INPUT class=radio name=text1553
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.私钥容易保密<BR></TD></TR>
<TR class=trh1>
<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>
<TR class=trh1>
<TD align=middle height=212 width=29>20 </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。为了防止会话劫持，Kerberos提供了 (34) 机制©) <BR>答： <INPUT
class=radio name=text1557 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.连续加密<BR> <INPUT class=radio name=text1557
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.报文认证<BR> <INPUT class=radio name=text1557
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.数字签名<BR> <INPUT class=radio name=text1557
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.密钥分发<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>21 </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。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>
<TR class=trh1>
<TD align=middle height=212 width=29>22 </TD>
<TD align=left height=212 width=607> 国际标准化组织制定的OSI网络管理协议是
(36) ©) <BR>答： <INPUT class=radio name=text1561
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.CMIP<BR> <INPUT class=radio name=text1561
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.LMMP<BR> <INPUT class=radio name=text1561
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.CMOT<BR> <INPUT class=radio name=text1561
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.SGMP<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>23 </TD>
<TD align=left height=212 width=607>
管理站(Manager)通过GetRequest命令查询代理(Agent)中的管理信息库，如果代理需要向管理站报告一个异常事件， (40)
事件不属于异常事件。©) <BR>答： <INPUT class=radio name=text1567
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.系统重启动<BR> <INPUT class=radio name=text1567
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.链路失效<BR> <INPUT class=radio name=text1567
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.报文认证失败<BR> <INPUT class=radio name=text1567
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.检索的变量不存在<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>24 </TD>
<TD align=left height=212 width=607> IEEE802．11
MAC层具有多种功能，其中分布式协调功能采用的是 (43) 协议©) <BR>答： <INPUT class=radio
name=text1574 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.CSMA／CA<BR> <INPUT class=radio name=text1574
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.CSMA／CB<BR> <INPUT class=radio name=text1574
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.CSMA／CD<BR> <INPUT class=radio name=text1574
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.CSMAJCF<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>25 </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>26 </TD>
<TD align=left height=212 width=607>
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>27 </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>28 </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
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