📄 模拟考试9.htm
字号:
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.2d+l<BR></TD></TR>
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<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>
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<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>
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<TD align=middle height=212 width=29>7 </TD>
<TD align=left height=212 width=607> ATM网络采用 (11) 多路技术传送信元©)
<BR>答： <INPUT class=radio name=text1520
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.统计时分<BR> <INPUT class=radio name=text1520
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.同步时分<BR> <INPUT class=radio name=text1520
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.频分<BR> <INPUT class=radio name=text1520
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.码分<BR></TD></TR>
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<TD align=middle height=212 width=29>8 </TD>
<TD align=left height=212 width=607>
ATM典型的数据速率为155.5Mb／s，这样每秒大约可以传送 (12) 万个信元。©) <BR>答： <INPUT
class=radio name=text1521 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.24<BR> <INPUT class=radio name=text1521
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.36<BR> <INPUT class=radio name=text1521
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.56<BR> <INPUT class=radio name=text1521
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.64<BR></TD></TR>
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<TD align=middle height=212 width=29>9 </TD>
<TD align=left height=212 width=607>
采用短的、固定长度的信元，为使用硬件进行高速，数据交换创造了条件。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，CBR(ConstantBitRate)模拟
(13) 业务©) <BR>答： <INPUT class=radio name=text1522
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.报文交换<BR> <INPUT class=radio name=text1522
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.分组交换<BR> <INPUT class=radio name=text1522
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.电路交换<BR> <INPUT class=radio name=text1522
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.时分交换<BR></TD></TR>
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<TD align=middle height=212 width=29>10 </TD>
<TD align=left height=212 width=607>
设信道带宽为3000Hz，根据尼奎斯特(Nyquist)定理，如果该信道信噪比为30dB，则该信道的带宽约为 (18) 。©) <BR>答：
<INPUT class=radio name=text1529 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.10Kb／s<BR> <INPUT class=radio name=text1529
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.20Kb／s<BR> <INPUT class=radio name=text1529
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.30Kb／s<BR> <INPUT class=radio name=text1529
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.40Kb／s<BR></TD></TR>
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<TD align=middle height=212 width=29>11 </TD>
<TD align=left height=212 width=607>
ICMP协议属于TCP／IP网络中的(21)协议©) <BR>答： <INPUT class=radio name=text1534
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.数据链路层<BR> <INPUT class=radio name=text1534
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.网络层<BR> <INPUT class=radio name=text1534
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.传输层<BR> <INPUT class=radio name=text1534
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.会话层<BR></TD></TR>
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<TD align=middle height=212 width=29>12 </TD>
<TD align=left height=212 width=607> 如果网络中出现拥塞，则路由器产生一个_(25)_
报文。©) <BR>答： <INPUT class=radio name=text1542
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.超时<BR> <INPUT class=radio name=text1542
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.路由重定向<BR> <INPUT class=radio name=text1542
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.源端抑制<BR> <INPUT class=radio name=text1542
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.目标不可到达<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>13 </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>14 </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>
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<TD align=middle height=212 width=29>15 </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
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