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Dim numa, numb, numc, numd
Public resflag, resultstr, ansnum, exwav(100), exwavnum, mins, secs
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next
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End Sub
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<p align="center" class="STYLE2">全国计算机技术与软件专业技术资格(水平)考试 <br>
全真模拟试卷(五)上午试题</p>
<p align="center" class="style1">(考试时间9∶00～11∶30，共150分钟)</p>
<span class="style1">1.本试卷的试题中共有75个空格，需要全部解答，每个空格1分，满分75分。<br>
2.每个空格对应一个序号，有A、B、C、D四个选项，请选择一个最恰当的选项作为解答。<br>
<br>
</span>
<p class="style1">●主存储器和CPU之间增加高速缓冲存储器(Cache)的目的是<u> (1) </u>。 </p>
<p class="style1">
(1)
<input type=radio name=tba1 Value = 1 >
A.解决CPU、主存速度匹配<br>
<input type=radio name=tba1 Value =0>
B.增加CPU通用寄存器数量<br>
<input type=radio name=tba1 Value =0 >
C.扩大主存容量<br>
<input type=radio name=tba1 Value = 0>
D.扩大主存容量和增加CPU通用寄存器数量</p>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="13%" valign="top" class="title">
<span class="style1">
<input name=tba1 type=text id="tba1" size=10 >
</span></td>
<td width="87%" valign="top"><span class="style1" style="text-align:left;"><img src="images/anniu.gif" width="78" height="22" img style="CURSOR: hand" onClick=DisplayOrHidden(T1)></span>
<table width="96%" border="0">
<tr>
<td><p align=left style='text-align:left;'>
<span class="style1"><SPAN id=T1 style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; DISPLAY: none; BORDER-LEFT: #ffffff 1px solid; COLOR: black; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: 宋体"><span class="STYLE1" style="font-family: 宋体"><strong> </strong></span>【解析】本题考查的是计算机系统中Cache结构的知识点。缓存是计算机系统中处处可以见到的技术，考生应该牢固掌握缓存的概念，以及采用缓存的理由。
Cache即高速缓冲存储器，是位于CPU与主存间的一种容量较小但是速度很高的存储器。采用Cache的理由是由于CPU的速度远高于主存，CPU直接从内存中存取数据要等待一定时间周期，Cache中保存着CPU刚用过或循环使用的一部分数据，当CPU再次使用该部分数据时可从Cache中直接调用，这样就减少了CPU的等待时间，提高了系统的效率。Cache又可以分为一级Cache(L1 Cache)和二级Cache(L2 Cache)。 </span> <p class="MsoNormal"></p></td>
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</table></td>
</tr>
</table>
<p class="style1">●中央处理器包括<u> (2) </u>。 </p>
<p class="style1">(2)
<input type=radio name=tba2 Value = 1>
A.运算器和控制器<br>
<input type=radio name=tba2 Value = 0 >
B.累加器和控制器<br>
<input type=radio name=tba2 Value = 0 >
C.运算器和寄存器组<br>
<input type=radio name=tba2 Value = 0 >
D.运算和控制系统</p>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="13%" valign="top" class="title">
<span class="style1">
<input name=tba2 type=text id="tba2" size=10 >
</span></td>
<td width="87%" valign="top"><span class="style1" style="text-align:left;"><img src="images/anniu.gif" width="78" height="22" img style="CURSOR: hand" onClick=DisplayOrHidden(T2)></span>
<table width="96%" border="0">
<tr>
<td><p align=left style='text-align:left;'>
<span class="style1"><SPAN id=T2 style="BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; DISPLAY: none; BORDER-LEFT: #ffffff 1px solid; COLOR: black; BORDER-BOTTOM: #ffffff 1px solid; FONT-FAMILY: 宋体"><span class="STYLE1" style="font-family: 宋体"><strong> </strong></span><span class="style1"><span class="style1">【解析】中央处理器简称CPU，由运算器和控制器组成。 </span>
<p class="MsoNormal"></p></td>
</tr>
</table></td>
</tr>
</table>
<p class="style1">●指令的执行过程包括<u> (3) </u>、分析指令、执行指令。 </p>
<p class="style1">(3)
<input type=radio name=tba3 Value = 1 >
A.取指令<br>
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