📄 模拟考试3.htm
字号:
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>
<TR class=trh1>
<TD align=middle height=212 width=29>42 </TD>
<TD align=left height=212 width=607> ATM
网络中使用信元作为传输数据的单位，当信元从用户端进入网络中第一个交换机后，信元头中修改的部分是__(51)__。©) <BR>答：
<INPUT class=radio name=text1958 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.VCI<BR> <INPUT class=radio name=text1958
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.GFC<BR> <INPUT class=radio name=text1958
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.CLP<BR> <INPUT class=radio name=text1958
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.PT<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>43 </TD>
<TD align=left height=212 width=607> 信元传输采用__(52)__。©) <BR>答：
<INPUT class=radio name=text1959 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
TDM<BR> <INPUT class=radio name=text1959
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.FDM<BR> <INPUT class=radio name=text1959
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.WDM<BR> <INPUT class=radio name=text1959
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.ATDM<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>44 </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>
<TR class=trh1>
<TD align=middle height=212 width=29>45 </TD>
<TD align=left height=212 width=607> 指令 ServerAdmin
的作用是__(58)__©) <BR>答： <INPUT class=radio name=text1965
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.设定该WWW服务器的系统管理员账号<BR> <INPUT class=radio
name=text1965 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.设定系统管理员的电子邮件地址<BR> <INPUT class=radio
name=text1965 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.指明服务器运行时的用户账号，服务器进程拥有该账号的所有权限<BR> <INPUT
class=radio name=text1965 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.指定服务器 WWW 管理界面的 URL，包括虚拟目录、监听端口等信息<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>46 </TD>
<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
name=text1967 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.UserHome<BR> <INPUT class=radio
name=text1967 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.Userdir<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>47 </TD>
<TD align=left height=212 width=607>
下图为曼彻斯特编码(表示的数据可能为___(1)___©) <BR>
<CENTER><IMG border=0 src="模拟考试3.files/2004813165711.bmp"> </CENTER><BR>答：
<INPUT class=radio name=text1968 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.10100<BR> <INPUT class=radio name=text1968
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.01110<BR> <INPUT class=radio name=text1968
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.10101<BR> <INPUT class=radio name=text1968
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.00011<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>48 </TD>
<TD align=left height=212 width=607>
图为曼彻斯特编码这种编码适用的网络是___(2)___。 ©) <BR>
<CENTER><IMG border=0 src="模拟考试3.files/20048131658261.bmp">
</CENTER><BR>答： <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.广域网<BR> <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.城域网<BR> <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.局域网<BR> <INPUT class=radio name=text1969
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.任意网<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>49 </TD>
<TD align=left height=212 width=607>
为了在广域网上高速传输数字信号，一般可用的编码方式是___(3)___©) <BR>答： <INPUT class=radio
name=text1970 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
NRZ<BR> <INPUT class=radio name=text1970
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.AMI<BR> <INPUT class=radio name=text1970
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.曼彻斯特<BR> <INPUT class=radio name=text1970
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.8B/10B<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>50 </TD>
<TD align=left height=212 width=607> 信元交换采用___(8)___技术进行复用。©)
<BR>答： <INPUT class=radio name=text1974
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.TDM<BR> <INPUT class=radio name=text1974
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.FDM<BR> <INPUT class=radio name=text1974
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.WDM<BR> <INPUT class=radio name=text1974
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.ATDM<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>51 </TD>
<TD align=left height=212 width=607> 信元交换在交换过程中，当实施 VP 交换时，其中
VPl、VCI 的变化情况是___(9)___。 ©) <BR>答： <INPUT class=radio name=text1975
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
VPI、VCI都不变<BR> <INPUT class=radio name=text1975
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.VPI、VCI根据需要变化<BR> <INPUT class=radio
name=text1975 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.VPI不变、VCI根据需要变化<BR> <INPUT class=radio
name=text1975 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.VCI不变、VPI根据需要变化<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>52 </TD>
<TD align=left height=212 width=607>
信元交换过程中出现拥塞，该信息被记录在信元的___(10)___中。 ©) <BR>答： <INPUT class=radio
name=text1976 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
GPC<BR> <INPUT class=radio name=text1976
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=B>B.
VPI<BR> <INPUT class=radio name=text1976
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.CLP <BR> <INPUT class=radio name=text1976
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.PT<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>53 </TD>
<TD align=left height=212 width=607> MODEM
收到呼叫信号后向计算机发送的信号是___(12)___。©) <BR>答： <INPUT class=radio
name=text1978 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=A>A.接收数据<BR> <INPUT class=radio name=text1978
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=B>B.载波检测<BR> <INPUT class=radio name=text1978
onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=C>C.MODEM 就绪<BR> <INPUT class=radio
name=text1978 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio
value=D>D.呼叫(振铃)指示<BR></TD></TR>
<TR class=trh1>
<TD align=middle height=212 width=29>54 </TD>
<TD align=left height=212 width=607> 计算机向 MODEM 发送的信号后MODEM
随后向计算机发送清除___(14)___信号作为应答。 ©) <BR>答： <INPUT class=radio
name=text1980 onblur="this.className='radio'"
onfocus="this.className='inputedit';this.select()" type=radio value=A>A.
'DTE就绪'<BR> <INPUT class=radio name=text1980
onblur="this.className='radio'"
onfocus="this.className='inputed⌨️ 快捷键说明
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