📄 模拟考试20.htm
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<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，在物理层可以采用__(26)__加强通信线路的安全©) <BR>答： <INPUT
class=radio name=text1690 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.防窃听技<BR> <INPUT class=radio name=text1690
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=text1690
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=text1690
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.防拒认技术 <BR></TD></TR>
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<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=left height=212 width=607> 对照 ISO/OSI
参考模型各个层中的网络安全服务，在传输层主要解决进程到进程间的加密，最常见的传输层安全技术有__(29)__©) <BR>答：
<INPUT class=radio name=text1699 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.SET<BR> <INPUT class=radio name=text1699
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.IPsec<BR> <INPUT class=radio name=text1699
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.S-HTTP<BR> <INPUT class=radio name=text1699
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.SSL <BR></TD></TR>
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<TD align=middle height=212 width=29>44 </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>
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<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=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>
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<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=left height=212 width=607> 当计算机需要通过相连的 MORDEM
发送数据时，依次设置的信号是__(50)__。©) <BR>答： <INPUT class=radio name=text1957
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.MODEM就绪→
DTE就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清MODEM就绪→清DTE就绪<BR>
<INPUT class=radio name=text1957 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.MODEM就绪→DTE就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清DTE就绪→清MODEM就绪<BR>
<INPUT class=radio name=text1957
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.DTE就绪→MODEM就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清MODEM就绪→清DTE就绪<BR>
<INPUT class=radio name=text1957
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.DTE就绪→MODEM就绪→请求发送→允许发送→发数据→清请求发送→清允许发送→清DTE就绪→清MODEM就绪<BR></TD></TR>
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<TD align=middle height=212 width=29>49 </TD>
<TD align=left height=212 width=607> 当进行 VP 交换时，VPI 和 VCI
的变化情况是__(53)__。©) <BR>答： <INPUT class=radio name=text1960
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.VPI变化，VCI不变<BR> <INPUT class=radio
name=text1960 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.VPI不变，VCI变化<BR> <INPUT class=radio
name=text1960 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.VPI变化，VCI变化<BR> <INPUT class=radio
name=text1960 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.VPI不变，VCI不变<BR></TD></TR>
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<TD align=left height=212 width=607> 当 AAL 层采用 AAL5
协议传输数据时，可以达到的有效数据传输率（除去开销）为__(55)__。 ATM 网络中使用信元作为传输数据的单位， ©) <BR>答：
<INPUT class=radio name=text1962 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.85% <BR> <INPUT class=radio name=text1962
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.87%<BR> <INPUT class=radio name=text1962
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.89%<BR> <INPUT class=radio name=text1962
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.90% <BR></TD></TR>
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<TD align=left height=212 width=607> URL
根目录与服务器本地目录之间的映射关系是通过指令__(57)__设定©) <BR>答： <INPUT class=radio
name=text1964 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.WWWroot<BR> <INPUT class=radio name=text1964
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.ServerRoot<BR> <INPUT class=radio
name=text1964 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.ApacheRot<BR> <INPUT class=radio
name=text1964 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.DocumentRoot<BR></TD></TR>
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<TD align=left height=212 width=607> 设置 index.html 或
default.html 为目录下默认文档的指令是__(59)__©) <BR>答： <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.IndexOptions<BR> <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.DirectoryIndex<BR> <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.DirectoryDefault<BR> <INPUT class=radio
name=text1966 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.Indexlgnore<BR></TD></TR>
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<TD align=left height=212 width=607>
如果允许以“http://www.xxx.edu.cn/~username”方式访问用户的个人主页，必须通过__(60)__指令设置个人主页文档所在的目录。©)
<BR>答： <INPUT class=radio name=text1967
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.VirtualHost<BR> <INPUT class=radio
name=text1967 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.VirtualDiretory<BR> <INPUT class=radio
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