📄 模拟考试29.htm
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onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.16<BR> <INPUT class=radio name=text1506
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.32<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>3 </TD>
<TD align=left height=212 width=607> TCP使用 (7) 次握手协议建立连接。©)
<BR>答： <INPUT class=radio name=text1515
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.1<BR> <INPUT class=radio name=text1515
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.2<BR> <INPUT class=radio name=text1515
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.3<BR> <INPUT class=radio name=text1515
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.4<BR></TD></TR>
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<TD align=middle height=212 width=29>4 </TD>
<TD align=left height=212 width=607> 当主动方发出SYN连接请求后，等待对方回答
(8) 。©) <BR>答： <INPUT class=radio name=text1517
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.SYN,ACK<BR> <INPUT class=radio name=text1517
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.FIN,ACK<BR> <INPUT class=radio name=text1517
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.PSH,ACK<BR> <INPUT class=radio name=text1517
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.RST，ACK<BR></TD></TR>
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<TD align=middle height=212 width=29>5 </TD>
<TD align=left height=212 width=607> TCP这种建立连接的方法可以防止 (9) 。©)
<BR>答： <INPUT class=radio name=text1518
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.出现半连接<BR> <INPUT class=radio name=text1518
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.无法连接<BR> <INPUT class=radio name=text1518
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.假冒的连接<BR> <INPUT class=radio name=text1518
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.产生错误的连接<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>6 </TD>
<TD align=left height=212 width=607> TCP使用的流量控制协议是 (10) 。©)
<BR>答： <INPUT class=radio name=text1519
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.固定大小的滑动窗口协议<BR> <INPUT class=radio
name=text1519 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.可变大小的滑动窗口协议<BR> <INPUT class=radio
name=text1519 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.后退N帧ARQ协议<BR> <INPUT class=radio
name=text1519 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.选择重发ARQ协议<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>7 </TD>
<TD align=left height=212 width=607>
ATM是为B-ISDN定义的传输和交换方式，可以适应各种不同特性的电信业务，用于ATM局域网仿真的ATM适配层是 (15) ©) <BR>答：
<INPUT class=radio name=text1525 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.AAL1<BR> <INPUT class=radio name=text1525
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.AAL2<BR> <INPUT class=radio name=text1525
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.AAL3/4<BR> <INPUT class=radio name=text1525
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.AAL5<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>8 </TD>
<TD align=left height=212 width=607>
设信道带宽为3000Hz，根据尼奎斯特(Nyquist)定理，设信道误码率为10-5，帧长为10K比特，差错为单个错，则帧出错的概率为 (19)
。©) <BR>答： <INPUT class=radio name=text1531
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.1-(1-10-5)10K<BR> <INPUT class=radio
name=text1531 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.(1-10-5)10K<BR> <INPUT class=radio
name=text1531 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.10-5 X 10K<BR> <INPUT class=radio
name=text1531 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.(1-10-5) X 10K<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>9 </TD>
<TD align=left height=212 width=607> ICMP有13种报文，常用的ping程序中使用了
(23) 报文，以探测目标主机是否可以到达。©) <BR>答： <INPUT class=radio name=text1538
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.地址掩码请求／响应<BR> <INPUT class=radio
name=text1538 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.回送请求脏答<BR> <INPUT class=radio name=text1538
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.信息请求／响应<BR> <INPUT class=radio name=text1538
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.时间戳请求／响应<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>10 </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>
<TR class=trh1>
<TD align=middle height=212 width=29>11 </TD>
<TD align=left height=212 width=607> IPv6是下一代IP协议。基本报头中的 (27)
字段指明了一个特定的源站向一个特定目标站发送的分组序列，各个路由器要对该分组序列进行特殊的资源分配，以满足应用程序的特殊传输需求。©) <BR>答：
<INPUT class=radio name=text1547 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.负载长度<BR> <INPUT class=radio name=text1547
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.数据流标记<BR> <INPUT class=radio name=text1547
onblur="this.className='radio'"
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>12 </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>13 </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>14 </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>15 </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
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