| 软件水平考试系统分析师易错题（2019/4/15） |
| 第1题：影响软件开发成本估算的因素不包括以上哪项( )
A、软件人员业务水平 B、软件开始规模及复杂度 C、开发所需时间 D、开发所需硬件资源模型 |
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| 第2、3题：算法的空间复杂度是指(14)，算法的时间复杂度是指(15)
(14) 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 (15) 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 |
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| 第4、5、6、7、8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9题：( )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?
I.复制信息 II.剪裁信息 III.窃听信息 A、I和II B、II和III C、I和III D、全部 |
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| 第10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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