200402_rjsjs_1.htm

软件设计师考试的资料

</span>　　<span lang=EN-US>(18)A</span>．简单的双宿主主机结构<span class=GramE>　　　　　　　</span><span
lang=EN-US> B</span>．单<span lang=EN-US>DMZ</span>防火墙结构<span lang=EN-US><br>
</span><span class=GramE>　　　　</span><span lang=EN-US>C</span>．带有屏蔽路由器<span
class=GramE>的单网段</span>防火墙结构　<span lang=EN-US> D</span>．双<span lang=EN-US>DMZ</span>防火墙结构<span
lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center;mso-pagination:widow-orphan'><span lang=EN-US
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体;
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<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>●</span>电子商务交易必须具备抗抵赖性，目的在于防<span lang=EN-US>_(19)_</span>。<span
lang=EN-US><br>
</span>　　<span lang=EN-US>(19)A</span>．一个实体假装成另一个实体<span class=GramE>　　　　　　</span><span
lang=EN-US>B</span>．参与此交易的一方否认曾经发生过此次交易<span lang=EN-US><br>
</span><span class=GramE>　　　　</span><span lang=EN-US>C</span>．他人对数据进行非授权的修改、破坏　　<span
lang=EN-US>D</span>．信息从被监视的通信过程中泄漏出去<span lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>●</span>知识产权一般都具有法定的保护期限，一旦保护期限届满，权利将自行终止，成为社会公众可以自由使用的知识。<span
lang=EN-US>_(20)_</span>权受法律保护的期限是不确定的，一旦为公众所知悉，即成为公众可以自由使用的知识。<span
lang=EN-US><br>
</span>　　<span lang=EN-US>(20)A</span>．发明专利<span class=GramE>　　　　　</span><span
lang=EN-US>B</span>．商标<span class=GramE>　　　　　</span><span lang=EN-US> C</span>．作品发表<span
class=GramE>　　　　</span><span lang=EN-US>D</span>．商业秘密<span lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>●</span>甲、乙两人在同一时间就同样的发明创造提交了专利申请，专利局将分别向各申请人通报有关情况，并提出多种解决这一问题的办法，不可能采用<span
lang=EN-US>_(21)_</span>的办法。<span lang=EN-US><br>
</span>　　<span lang=EN-US>(21)A</span>．两申请人作为一件申请的共同申请人<span lang=EN-US><br>
</span><span class=GramE>　　　　</span><span lang=EN-US>B</span>．其中一方放弃权利并从另一方得到适当的补偿<span
lang=EN-US><br>
</span><span class=GramE>　　　　</span><span lang=EN-US>C</span>．两件申请都不授予专利权<span
class=GramE>　　　　　　</span><span lang=EN-US>D</span>．两件申请都授予专利权<span lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>● </span>《计算机软件产品开发文件编制指南》》<span lang=EN-US>(GB
8567-88)</span>是<span lang=EN-US>_(22)_ </span>标准。<span lang=EN-US><br>
</span>　　<span lang=EN-US>(22)A</span>．强制性国家<span class=GramE>　　　　</span><span
lang=EN-US>B</span>．推荐<span class=GramE>性国家</span>　　<span lang=EN-US> C</span>．强制性行业　　<span
class=GramE>　</span><span lang=EN-US>D</span>．推荐性行业<span lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>●</span>虚拟存储管理系统的基础是程序的<span lang=EN-US>_(23)_</span>理论，这个理论的基本含义是<span
class=GramE>指程序</span>执行时往往会不均匀地访问主存储器单元。根据这个理论，<span lang=EN-US>Denning</span>提出了工作集理论。工作集是进程运行时被频繁地访问的页面集合。在进程运行时，如果它的工作集页面都在<span
lang=EN-US>_(24)_</span>内，能够使该进程有效地运行，否则会出现频繁的页面调入<span lang=EN-US>/</span>调出现象。<span
lang=EN-US><br>
</span>　　<span lang=EN-US>(23)A</span>．全局性<span class=GramE>　　　　　　</span><span
lang=EN-US>B</span>．局部性<span class=GramE>　　　　</span><span lang=EN-US> C</span>．时间全局性　　<span
class=GramE>　</span><span lang=EN-US>D</span>．空间全局性<span lang=EN-US><br>
</span>　　<span lang=EN-US>(24)A</span>．主存储器<span class=GramE>　　　　　</span><span
lang=EN-US>B</span>．虚拟存储器　　<span lang=EN-US> C</span>．辅助存储器　　<span class=GramE>　</span><span
lang=EN-US>D</span>．<span lang=EN-US>u</span>盘<span lang=EN-US><o:p></o:p></span></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>●</span>在<span lang=EN-US>UNIX</span>操作系统中，若用户键入的命令参数的个数为<span
lang=EN-US>1</span>时，执行<span lang=EN-US>cat$1</span>命令；若用户键入的命令参数的个数为<span
lang=EN-US>2</span>时，执行<span lang=EN-US>cat&gt;&gt;$2&lt;$1</span>命令。请将下面所示的<span
lang=EN-US>Shell</span>程序的空缺部分补齐。</span><span lang=EN-US style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:white;mso-font-kerning:
0pt'>(</span><span style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:
宋体;color:white;mso-font-kerning:0pt'>此括号内不是试题部分。欢迎访问软件考试网<span lang=EN-US>www.hbsoft.net)</span></span><span
lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:
宋体;color:black;mso-font-kerning:0pt'><br>
</span><span style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:
宋体;color:black;mso-font-kerning:0pt'>　　<span lang=EN-US>case_(25)_in<br>
</span>　　<span class=GramE>　</span><span lang=EN-US>1)cat$1;;<br>
</span>　　　<span lang=EN-US>2)cat&gt;&gt;$2&lt;$1;;<br>
</span>　　　<span lang=EN-US>*)echo 'default...'<br>
</span>　　<span class=SpellE><span lang=EN-US>esac</span></span><span
lang=EN-US><br>
</span>　　<span lang=EN-US>(25)A</span>．<span lang=EN-US>$$</span><span
class=GramE>　　　　　　　　</span><span lang=EN-US>B</span>．<span lang=EN-US>$@</span><span
class=GramE>　　　　　　</span><span lang=EN-US> C</span>．<span lang=EN-US>$#</span><span
class=GramE>　　　　　　　</span><span lang=EN-US>D</span>．<span lang=EN-US>$*<o:p></o:p></span></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span class=GramE><span lang=EN-US>●</span>进程</span><span lang=EN-US>PA</span>不断地向管道写数据，进程<span
lang=EN-US>PB</span>从管道中<span class=GramE>读数据并加工</span>处理，如下图所示。如果采用<span
lang=EN-US>PV</span>操作来实现进程<span lang=EN-US>PA</span>和进程<span lang=EN-US>PB</span>间的管道通信，并且保证这两个进程并发执行的正确性，则至少需要<span
lang=EN-US>_(26)_</span>。<span lang=EN-US><br>
</span>　　<span lang=EN-US>(26)A</span>．<span lang=EN-US>1</span>个信号量，信号量的初值为<span
lang=EN-US>0<br>
</span><span class=GramE>　　　　</span><span lang=EN-US>B</span>．<span lang=EN-US>2</span>个信号量，信号量的初值分别为<span
lang=EN-US>0</span>、<span lang=EN-US>1<br>
</span><span class=GramE>　　　　</span><span lang=EN-US>C</span>．<span lang=EN-US>3</span>个信号量，信号量的初值分别为<span
lang=EN-US>0</span>、<span lang=EN-US>0</span>、<span lang=EN-US>1<br>
</span><span class=GramE>　　　　</span><span lang=EN-US>D</span>．<span lang=EN-US>4</span>个信号量，信号量的初值分别为<span
lang=EN-US>0</span>、<span lang=EN-US>0</span>、<span lang=EN-US>1</span>、<span
lang=EN-US>1<o:p></o:p></span></span></p>

<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center;mso-pagination:widow-orphan'><span lang=EN-US
style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体;
color:black;mso-font-kerning:0pt'><!--[if gte vml 1]><v:shape id="_x0000_i1028"
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 <v:imagedata src="200402_rjsjs_1.files/image002.gif" o:href="http://oldchild.nbc.net.cn/jsjsj/spks/gc/gc042s2.gif"/>
</v:shape><![endif]--><![if !vml]><img width=364 height=59
src="200402_rjsjs_1.files/image002.gif" v:shapes="_x0000_i1028"><![endif]><o:p></o:p></span></p>

<p class=MsoNormal align=left style='mso-margin-top-alt:auto;margin-bottom:
3.75pt;text-align:left;mso-pagination:widow-orphan'><span style='mso-bidi-font-size:
10.5pt;font-family:宋体;mso-bidi-font-family:宋体;color:black;mso-font-kerning:
0pt'>　　<span lang=EN-US>●</span>假设系统中有三类互斥资源<span lang=EN-US>R1</span>、<span
lang=EN-US>R2</span>和<span lang=EN-US>R3</span>，可用资源数分别为<span lang=EN-US>9</span>、<span
lang=EN-US>8</span>和<span lang=EN-US>5</span>。在<span lang=EN-US>To</span>时刻系统中有<span
lang=EN-US>P1</span>、<span lang=EN-US>P2</span>、<span lang=EN-US>P3</span>、<span
lang=EN-US>P4</span>和<span lang=EN-US>P5</span><span class=GramE>五个</span>进程，这些进程对资源的最大需求量和已分配资源数如下表所示。如果进程按<span
lang=EN-US>_(27)_</span>序列执行，那么系统状态是安全的。<span lang=EN-US>&nbsp;&nbsp;&nbsp;<o:p></o:p></span></span></p>

<div align=center>

<table class=MsoNormalTable border=1 cellspacing=0 cellpadding=0 width="80%"
 style='width:80.0%;mso-cellspacing:0cm;mso-padding-alt:0cm 0cm 0cm 0cm'>
 <tr style='mso-yfti-irow:0;mso-yfti-firstrow:yes'>
  <td width="33%" style='width:33.0%;padding:0cm 0cm 0cm 0cm'>
  <p class=MsoNormal align=center style='text-align:center;mso-pagination:widow-orphan'><span
  style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体;
  color:black;mso-font-kerning:0pt'>资源<span lang=EN-US><o:p></o:p></span></span></p>
  </td>
  <td width="33%" style='width:33.0%;padding:0cm 0cm 0cm 0cm'>
  <p class=MsoNormal align=center style='text-align:center;mso-pagination:widow-orphan'><span
  style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体;
  color:black;mso-font-kerning:0pt'>最大需求量<span lang=EN-US><o:p></o:p></span></span></p>
  </td>
  <td width="34%" style='width:34.0%;padding:0cm 0cm 0cm 0cm'>
  <p class=MsoNormal align=center style='text-align:center;mso-pagination:widow-orphan'><span
  style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体;
  color:black;mso-font-kerning:0pt'>已分配资源数<span lang=EN-US><o:p></o:p></span></span></p>
  </td>
 </tr>
 <tr style='mso-yfti-irow:1'>
  <td width="33%" style='width:33.0%;padding:0cm 0cm 0cm 0cm'>
  <p class=MsoNormal align=center style='text-align:center;mso-pagination:widow-orphan'><span
  style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:宋体;
  color:black;mso-font-kerning:0pt'>进程<span lang=EN-US><o:p></o:p></span></span></p>
  </td>
  <td width="33%" style='width:33.0%;padding:0cm 0cm 0cm 0cm'>
  <p class=MsoNormal align=center style='text-align:center;mso-pagination:widow-orphan'><span
  lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:
  宋体;color:black;mso-font-kerning:0pt'>R1 R2 R3<o:p></o:p></span></p>
  </td>
  <td width="34%" style='width:34.0%;padding:0cm 0cm 0cm 0cm'>
  <p class=MsoNormal align=center style='text-align:center;mso-pagination:widow-orphan'><span
  lang=EN-US style='mso-bidi-font-size:10.5pt;font-family:宋体;mso-bidi-font-family:
  宋体;color:black;mso-font-kerning:0pt'>R1 R2 R3<o:p></o:p></span></p>