| 软件水平考试系统分析师易错题（2018/3/12） |
| 第1题：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 |
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| 第2、3、4、5、6题：In the following essay, each bland has four choices.Choose the best answer and write down on the answer sheet. With the implementation of (6) 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 may use different programming languages and, more importantly, different forms of (7) interface between user(application)program, normally referred to ,as application processes, and the underlying communication services may be (8). For example, one computer may be a small single-user computer, while another may be a large (9) 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. IBM’s systems NetworkArchitecture (SNA、andDEC’sDigital NetworkArchitectureDNA、are just two examples of communication software packages produced by manufacturers to allow their systems to be intercormected 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,(10) ,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.
(6) A、communicationchannel B、protocols C、datachannel D、publiccommunication (7) A、database B、datarepresentation C、protocols D、datacommunication (8) A、same B、similar C、different D、dependent (9) A、multi-user B、client C、server D、full-user (10) A、DNA B、SNA C、theOSI D、theISO |
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| 第7题：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 |
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| 第8题：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 WHERE、SNAME=‘刘-’ C、SELECT S#，SNAME，FROM S WHERE、SNAME、LIKE‘刘%’ D、SELECT S#，SNAME，FROM S WHERE、SNAME、LIKE、‘刘-’ |
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| 第9、10、11题：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(2)
T中有(3)处树叶，共有(4)个结点 (2) A、45 B、50 C、55 D、60 (3) A、4 B、5 C、6 D、7 (4) A、6 B、7 C、8 D、9 |
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