高级系统分析师单选集考试卷模拟考.试题

1、姓名：_ 班级：_ 学号：_-密-封 -线- 高级系统分析师单选集考试卷模拟考.试题考试时间：120分钟 考试总分：100分题号一二三四五总分分数遵守考场纪律，维护知识尊严，杜绝违纪行为，确保考试结果公正。1、两个公司希望通过internet 进行安全通信保证从信息源到目的地之间的数据传输以密文形式出现，而且公司不希望由于在传输节点使用特殊的安全单元而增加开支，最合适的加密方式是(1)，使用的会话密钥算法应该是(2)。1（ ）a.链路加密b.节点加密c.端-端加密d.混合加密2、两个公司希望通过internet 进行安全通信保证从信息源到目的地之间的数据传输以密文形式出现，而且公司不希望由于在

2、传输节点使用特殊的安全单元而增加开支，最合适的加密方式是(1)，使用的会话密钥算法应该是(2)。2（ ）a.rsab.rc-5c.md5d.ecc3、如果对一个关系实施了一种关系运算后得到了一个新的关系，而且新的关系中的属性由该运算决定，这说明所实施的运算关系是：（ ）a.选择b.投影c.连接d.笛卡儿积4、影响软件开发成本估算的因素不包括以下哪项（ ）a.软件人员业务水平b.软件开发规模及复杂度c.开发所需时间d.开发所需硬件资源模型5、javabean组件模型特点不包括（ ）a.javabean 组件模型是面向应用的组件模型b.它支持可移植和可重用的java组件的开发c.javabean

3、组件可以工作于任何java程序应用开发工具中d.javabean 组件总是在程序运行时被实例化6、在形式语言中，文法g是一个四元组g=(vn，vr，p，z)，其中vn为(1)。若文法c的产生式集p为：(1)zbc (2)zzc (3)bab (4)bbb (5)aaa (6)aa则文法g是(2)文法，识别g的自动机为(3)。对于g来说，(4)为文法g可接受的字符串，(5)为文法g不可接受的字符串。供选择的答案：1（ ）a.状态标志符b.开始符c.语句集d.非终结符集合7、在形式语言中，文法g是一个四元组g=(vn，vr，p，z)，其中vn为(1)。若文法c的产生式集p为：(1)zbc (2)z

4、zc (3)bab (4)bbb (5)aaa (6)aa则文法g是(2)文法，识别g的自动机为(3)。对于g来说，(4)为文法g可接受的字符串，(5)为文法g不可接受的字符串。供选择的答案：2（ ）a.短语b.上下文有关c.上下文无关d.正则8、在形式语言中，文法g是一个四元组g=(vn，vr，p，z)，其中vn为(1)。若文法c的产生式集p为：(1)zbc (2)zzc (3)bab (4)bbb (5)aaa (6)aa则文法g是(2)文法，识别g的自动机为(3)。对于g来说，(4)为文法g可接受的字符串，(5)为文法g不可接受的字符串。供选择的答案：3（ ）a.图灵机b.下推自动机c.

5、有穷状态自动机d.线性界限自动机9、在形式语言中，文法g是一个四元组g=(vn，vr，p，z)，其中vn为(1)。若文法c的产生式集p为：(1)zbc (2)zzc (3)bab (4)bbb (5)aaa (6)aa则文法g是(2)文法，识别g的自动机为(3)。对于g来说，(4)为文法g可接受的字符串，(5)为文法g不可接受的字符串。供选择的答案：4（ ）a.aaabcb.acbbc.acbcabd.acbbca10、在形式语言中，文法g是一个四元组g=(vn，vr，p，z)，其中vn为(1)。若文法c的产生式集p为：(1)zbc (2)zzc (3)bab (4)bbb (5)aaa (6

6、)aa则文法g是(2)文法，识别g的自动机为(3)。对于g来说，(4)为文法g可接受的字符串，(5)为文法g不可接受的字符串。供选择的答案：5（ ）a.abbccb.acbcc.aaabcd.aabbccc11、自底向上的估计法的特点是（ ）a.简单、工作量小、误差大b.精度高，但缺少子任务(模块)间的联系c.估算较精确，但区分类比较困难d.复杂、不可行，一般不采用此种方法，但这种副作用可以通过详细的设计文档加以控制12、以下属于选择类排序法的是（ ）a.堆栈排序法b.插入排序法c.冒泡排序法d.快速排序法13、下列对关系的叙述中，（ ）不正确的。 （ ）a.关系中的每个属性是不可分解的b.在

7、关系中元组的顺序是无关紧要的c.任意的一个二维表都是一个关系d.在关系中任意两个元组不能完全相同。名学生这三种语言都没有学习14、对于“指针”和“链”，下面的说法正确的是（ ）a.它们是数据物理组织的两种形式b.它们是数据逻辑组织的两种形式c.它们是数据物理组织的两种基本工具d.它们是数据逻辑组织的两种基本工具15、甲、乙同为生产锂电池的厂家。甲得知乙研制出改进锂电池质量的技术诀窍后，遂以不正当方式获取了该技术，并加以利用。甲厂侵害了乙厂的（ ）a.技术秘密权b.专利权c.专利申请权d.经营信息权16、某软件公司开发的财务之星管理软件，在我国受法律保护的依据是（ ）a.中华人民共和国专利法b.

8、中华人民共和国科学技术进步法c.中华人民共和国商标法d.中华人民共和国著作权法17、（ ）信息传输的安全应保证信息在网络传输的过程中不被泄露和不被攻击。下列哪些属于攻击方法复制信息剪裁信息窃听信息 （ ）a.和b.和c.和d.全部18、局域网常用的拓扑结构有总线、环形、星形3种，以下关于这3种拓扑结构说法错误的是（ ）a.总线网可靠性高、扩充性能好、通信电缆长度短、成本低，但当网上站点较多时会因数据冲突增多而使效率降低b.环形网控制简单、信道利用率高、通信电缆长度短、对节点接口和传输的要求较低，但存在数据冲突问题c.星形网结构简单、实现容易、信息延迟确定，但通信电缆总长度长、传输媒体不能共享d

9、.选用何种拓扑结构，首先要考虑采用何种媒体访问控制方法，其次要考虑性能、可靠性、成本、扩充性、实现难易以及传输媒体的长度等因素19、进行系统修改时可能会产生维护的副作用，没有（ ）a.修改数据的副作用b.修改错误后，又引入了新的错误c.修改代码的副作用d.文档资料的副作用20、关于安全电子交易set要达到的主要目标，下列（ ）说法是错误的。 （ ）a.利用ssl协议保证数据不被黑客窃取b.隔离订单信息和个人账号信息c.持卡人和商家相互认证，确保交易各方的真实身份d.软件遵循相同协议和消息格式21、在电子商务环境中，对中介所发生的变化，你认为错误的是（ ）a.传统中介的数目将减少b.传统中介的数

10、目将由于电子商务带来得便利手段而增加c.要产生一些新的中介形式d.电子商务中如果又增加新的中介，其效率可能还是会提高22、bsp方法的资源识别过程是按资源生命周期的四个阶段来划分的，下列（ ）过程属于回收或分配阶段。 （ ）a.财政计划b.应收款项c.付账d.普通会计23、以下对软件工程管理的任务和目标最准确的描述是（ ）a.明确软件开发项目的工作范围、可能遇到的风险、需要的资源b.明确软件开发中要实现的任务和需要经历的里程碑c.明确所需的工作量以及进度安排d.以上所有答案24、下面关于测试的结论中只有一个是正确的，它是（ ）a.测试工作要贯穿于整个软件开发的全过程b.测试工作是指在编程实现过

11、程中进行的排错工作c.测试工作是指在产品完成后用户的验收工作过程d.测试工作量的弹性比较大，可以根据时间进度进行裁减25、渐增式是将模块一个一个地连人系统，每连人一个模块（ ）a.只需要对新连入的模块进行测试b.都不需要再进行测试c.要对新子系统进行测试d.都要进行回归测试26、把逻辑地址转变为内存的物理地址的过程称作（ ）a.编译b.连接c.运行d.重定位27、避免死锁的一个著名的算法是（ ）a.先入先出法b.银行家算法c.优先级算法d.资源按序分配法28、虚拟存储器的最大容量（ ）a.为主辅存容量之和b.由计算机的地址结构决定c.是任意的d.由作业的地址空间决定29、下列磁盘调度算法中，（

12、 ）体现了公平性 （ ）a.先来先服务b.最短寻道时间优先c.电梯算法d.单向扫描30、uml规定四种事物表示法，不包括（ ）a.结构性事物b.行为性事物c.特别性事物d.注释性事物31、入侵检测系统按其输入数据的来源分为3种，其中不包括（ ）a.基于主机的入侵检测系统b.基于网络的入侵检测系统c.分布式入侵检测系统d.集中式入侵检测系统32、用huffman(霍夫曼)算法求带权的2，3，5，7，8的最优二叉树t，那么t的权为(1)， t中有(2)片树叶，共有(3)个结点。1（ ）a.45b.50c.55d.6033、用huffman(霍夫曼)算法求带权的2，3，5，7，8的最优二叉树t，那么

13、t的权为(1)， t中有(2)片树叶，共有(3)个结点。2（ ）a.4b.5c.6d.734、用huffman(霍夫曼)算法求带权的2，3，5，7，8的最优二叉树t，那么t的权为(1)， t中有(2)片树叶，共有(3)个结点。3（ ）a.6b.7c.8d.935、数据字典是数据流图中所有元素的定义的集合，一般由以下四类条目组成（ ）a.数据说明条目、控制流条目、加工条目、数据存储条目b.数据流条目、数据项条目、文件条目、加工条目c.数据项条目、数据流条目、基本加工条目、数据存储条目d.数据流条目、数据文件条目、数据池条目、加工条目36、根据质量管理的基本原理，所进行的pdca循环，其中“d”是

14、指（ ）a.计划b.实施c.检查d.处理37、因计算机硬件和软件环境的变化而作出的修改软件的过程称为(1)，为增加软件功能、增强软件性能、提高软件运行效率而进行的维护活动称为(2)。1（ ）a.校正性维护b.适应性维护c.完善性维护d.预防性维护38、因计算机硬件和软件环境的变化而作出的修改软件的过程称为(1)，为增加软件功能、增强软件性能、提高软件运行效率而进行的维护活动称为(2)。2（ ）a.校正性维护b.适应性维护c.完善性维护d.预防性维护39、需求分析最终结果是产生（ ）a.项目开发计划b.需求规格说明书c.设计说明书d.可行性分析报告40、下列关于瀑布模型的描述正确的是（ ）a.瀑

15、布模型的核心是按照软件开发的时间顺序将问题简化b.瀑布模型具有良好的灵活性c.瀑布模型采用结构化的分析与设计方法，将逻辑实现与物理实现分开d.利用瀑布模型，如果发现问题修改的代价很低41、软件工程方法的产生源于软件危机，下列（ ）是产生软件危机的内在原因。软件复杂性软件维护困难软件成本太高软件质量难保证 （ ）a.b.c.和d.和42、目前已经提出的软件开发标准化的方案有（ ）a.corbab.xmlc.htmld.pvcs43、可行性研究主要从（ ）方面进行研究。 （ ）a.技术可行性，经济可行性，系统可行性b.技术可行性，经济可行性，操作可行性c.经济可行性，系统可行性，操作可行性d.经济

16、可行性，系统可行性，社会可行性44、算法的空间复杂度是指(1)，算法的时间复杂度是指(2)。1（ ）a.算法程序的长度b.算法程序中的指令条数c.算法程序所占的存储空间d.算法执行过程中所需要的存储空间45、算法的空间复杂度是指(1)，算法的时间复杂度是指(2)。2（ ）a.编写算法所用的时间b.算法程序中的每条指令执行的时间c.算法执行过程中所需要的时间d.算法使用时间的复杂程度46、栈结构不适用于下列（ ）应用。 （ ）a.表达式求值b.树的层次次序周游算法的实现c.二叉树对称序周游算法的实现d.快速排序算法的实现47、以下关于数据结构的基本概念的叙述中（ ）是错误的。 （ ）a.数据元素

17、是数据的基本单位b.数据项是有独立含义的数据最小单位c.数据结构概念包含的主要内容是数据的逻辑结构和数据的存储结构d.数据的逻辑结构分为线性结构和非线性结构48、电视系统采用的颜色空间中，其亮度信号和色度信号是相分离的。下列颜色空间中，（ ）颜色空间不属于电视系统的颜色空间。 （ ）a.yuvb.yiqc.ycrcbd.hsl49、在关系数据库设计中，定义数据库全局模式是（ ）阶段的内容。 （ ）a.需求分析b.概念设计c.逻辑设计d.物理设计50、下列叙述中，正确的是（ ）a.用e-r图只能表示实体集之间一对多的联系b.用e-r图只能表示实体集之间一对一的联系c.用e-r图表示的概念数据模型

18、只能转换为关系数据模型d.用e-r图能够表示实体集之间一对一的联系、一对多的联系、多对多的联系51、基于“学生-选课-课程”数据库中的三个关系：s(s#，sname，sex，age)，sc(s#，c#，grade)，c(c#，cname，teacher)若要求查找选修“数据库技术”这门课程的学生姓名和成绩，将使用关系（ ）a.s和scb.sc和cc.s和cd.s、sc和c52、若要求查找姓名中第一个字为刘的学生号和姓名。下面列出的sql语句中，（ ）是正确的。 （ ）a.select s#，sname from s where sname =刘%b.select s#，sname from s

19、 where sname =刘_c.select s#，sname from s where sname hke刘%d.select s#，sname from s where sname hke刘_53、主机a运行unix操作系统，ip地址为5，子网屏蔽码为40；主机b运行linux操作系统，ip地址为8，子网屏蔽码为40。它们分别连接在同一台局域交换机上，但处于不同的vlan中。主机通过ping命令去ping主机b时，发现接收不到正确的响应。可能的原因是（ ）a.主机a和主机b的ip地址

20、不同b.主机a和主机b处于不同的vlan中c.主机a和主机b使用了不同操作系统d.主机a和主机b处于不同的子网中54、用户a通过计算机网络向用户b发消息，表示自己同意签订某个合同，随后用户a反悔，不承认自己发过该条消息。为了防止这种情况发生，应采用（ ）a.数字签名技术b.消息认证技术c.数据加密技术d.身份认证技术55、下面选项中正确描述了冲突域的是（ ）a.传送了冲突的数据包的网络区域b.以网桥、路由器、交换机为边界的网络区域c.安装了路由器和集线器的网络区域d.应用了过滤器的网络区域56、一个局域网中某台主机的ip地址为2，使用20位作为网络地址，那么该局域网的子

21、网掩码为(1)，最多可以连接的主机数为(2)。1（ ）a.b.c.d.57、一个局域网中某台主机的ip地址为2，使用20位作为网络地址，那么该局域网的子网掩码为(1)，最多可以连接的主机数为(2)。2（ ）a.1022b.2046c.4094d.409658、在下列各项中，一个计算机网络的3个主要组成部分是（ ）。1、若干数据库2、一个通信子网3、一系列通信协议4、若干主机5、电话网6、大量终端 （ ）a.1、2、3b.2、3、4c.3、4、5d.2、4、659、设集合a

22、=a，b，c，a上的二元关系r=a，a，b，b不具备关系（ ）性质。 （ ）a.传递性b.反对称性c.对称性d.自反性60、在谓词演算中，p(a)是xp（x）的有效结论，根据是（ ）a.us规则b.ug规则c.es规则d.eg规则61、设（ ）a.1b.2c.3d.462、过原点作曲线y=ex的切线，则切线的方程为（ ）a.y=exb.y=exc.y=xd.y=ex63、某软件公司欲构造一文件/目录树，采用（ ）进行设计所得类图如图所示。 （ ）a.composite设计模式b.fagade设计模式c.iterator设计模式d.factory method设计模式64、命题公式的合取范式为

23、(1) ，析取范式为 (2) 。1（ ）a.ab.bc.cd.d65、命题公式的合取范式为 (1) ，析取范式为 (2) 。2（ ）a.ab.bc.cd.d66、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.with the implementation of(1), the so - called network has become a reality. the provision of such facilitie

24、s is the most important part of the network requirements. however, in many applications the communicating computers may be of different types. this means that they may use different programming languages and, more importantly, different forms of(2)interface between user(application) program, normall

25、y referred to, as application processes, and the underlying communication services may be(3). for example, one computer may be a small single - user computer, while another may be a large(4)system. in the earlier days of computer communication, these issues meant that only closed communities of comp

26、uters (that is, from the same manufacturer) could communicate with each other in a meaningful way. ibms systems network architecture (sna) and decs digital network architecture (dna) are just two examples of communication software packages produced by manufacturers to allow their systems to be inter

27、connected together. these proprietary packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or open systems interconnection. in an attempt to alleviate this problem,(5), in the late 1970s, formulated a reference model to provide a

28、common basis (or the coordination of standards developments and to allow existing and evolving standards activities to be placed into perspective with one another.1（ ）a.communication channelb.protocolsc.data channeld.public communication67、in the following essay, each blank has four choices. choose

29、the best answer and write down on the answer sheet.with the implementation of(1), the so - called network has become a reality. the provision of such facilities is the most important part of the network requirements. however, in many applications the communicating computers may be of different types

30、. this means that they may use different programming languages and, more importantly, different forms of(2)interface between user(application) program, normally referred to, as application processes, and the underlying communication services may be(3). for example, one computer may be a small single

31、 - user computer, while another may be a large(4)system. in the earlier days of computer communication, these issues meant that only closed communities of computers (that is, from the same manufacturer) could communicate with each other in a meaningful way. ibms systems network architecture (sna) an

32、d decs digital network architecture (dna) are just two examples of communication software packages produced by manufacturers to allow their systems to be interconnected together. these proprietary packages, however, of which there am still many inexistence, do not address the problem of universal in

33、terconnect ability, or open systems interconnection. in an attempt to alleviate this problem,(5), in the late 1970s, formulated a reference model to provide a common basis (or the coordination of standards developments and to allow existing and evolving standards activities to be placed into perspec

34、tive with one another.2（ ）a.databaseb.data representationc.protocolsd.data communication68、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.with the implementation of(1), the so - called network has become a reality. the provision of such

35、 facilities is the most important part of the network requirements. however, in many applications the communicating computers may be of different types. this means that they may use different programming languages and, more importantly, different forms of(2)interface between user(application) progra

36、m, normally referred to, as application processes, and the underlying communication services may be(3). for example, one computer may be a small single - user computer, while another may be a large(4)system. in the earlier days of computer communication, these issues meant that only closed communiti

37、es of computers (that is, from the same manufacturer) could communicate with each other in a meaningful way. ibms systems network architecture (sna) and decs digital network architecture (dna) are just two examples of communication software packages produced by manufacturers to allow their systems t

38、o be interconnected together. these proprietary packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or open systems interconnection. in an attempt to alleviate this problem,(5), in the late 1970s, formulated a reference model to

39、provide a common basis (or the coordination of standards developments and to allow existing and evolving standards activities to be placed into perspective with one another.3（ ）a.sameb.similarc.differentd.dependent69、in the following essay, each blank has four choices. choose the best answer and wri

40、te down on the answer sheet.with the implementation of(1), the so - called network has become a reality. the provision of such facilities is the most important part of the network requirements. however, in many applications the communicating computers may be of different types. this means that they

41、may use different programming languages and, more importantly, different forms of(2)interface between user(application) program, normally referred to, as application processes, and the underlying communication services may be(3). for example, one computer may be a small single - user computer, while

42、 another may be a large(4)system. in the earlier days of computer communication, these issues meant that only closed communities of computers (that is, from the same manufacturer) could communicate with each other in a meaningful way. ibms systems network architecture (sna) and decs digital network

43、architecture (dna) are just two examples of communication software packages produced by manufacturers to allow their systems to be interconnected together. these proprietary packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or

44、open systems interconnection. in an attempt to alleviate this problem,(5), in the late 1970s, formulated a reference model to provide a common basis (or the coordination of standards developments and to allow existing and evolving standards activities to be placed into perspective with one another.4

45、（ ）a.multi-userb.clientc.serverd.full-user70、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.with the implementation of(1), the so - called network has become a reality. the provision of such facilities is the most important part of the

46、network requirements. however, in many applications the communicating computers may be of different types. this means that they may use different programming languages and, more importantly, different forms of(2)interface between user(application) program, normally referred to, as application proces

47、ses, and the underlying communication services may be(3). for example, one computer may be a small single - user computer, while another may be a large(4)system. in the earlier days of computer communication, these issues meant that only closed communities of computers (that is, from the same manufa

48、cturer) could communicate with each other in a meaningful way. ibms systems network architecture (sna) and decs digital network architecture (dna) are just two examples of communication software packages produced by manufacturers to allow their systems to be interconnected together. these proprietar

49、y packages, however, of which there am still many inexistence, do not address the problem of universal interconnect ability, or open systems interconnection. in an attempt to alleviate this problem,(5), in the late 1970s, formulated a reference model to provide a common basis (or the coordination of

50、 standards developments and to allow existing and evolving standards activities to be placed into perspective with one another.5（ ）a.dnab.snac.the osid.the iso71、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.how does the developer of a

51、 large database system achieve(1)and data independence how does the developer make certain that stored items are(2)and do not simply disappear in the immensities of the database, as if in quicksandone solution is to set up a(3)system, in which all data (the internal level), all records and files (th

52、e conceptual level), and all user interfaces (the external level) are controlled by one central programming group. this may seem the most useful solution. but worldwide enterprises such as the meteorological and satellite tracking networks, ibm, and general motors gather and record information at a

53、very large number of locations. to stay flexible and avoid top - heaviness, such an organization might want to avoid excessive centralization.a centralized system is(4), but it may not be responsive to user needs. this is particularly true in a large organization - the worldwide meteorological netwo

54、rk, for example, data-gathering methods in the himalayas, the equatorial jungles are different in very possible way. it is reasonable to believe that the best choices for the corresponding data storage and access structures ought to be just as different. a centralized database system would not(5)such differences.1（ ）a.consistencyb.identificationc.coherenced.convergence72、in the following essay, each blank has four choices. choose the best answer and write down on the answer sheet.how does the developer of a large database system achieve(1)and data independence how does the developer