2010年软件水平考试软件设计师模拟练习题

　　●面向对象的测试可分为四个层次，按照由低到高的顺序，这四个层次是__(63)__。

　　(63)A.类层——模板层——系统层——算法层

　　B.算法层——类层二—模板层——系统层

　　C.算法层——模板层——类层——系统层

　　D.类层——系统层——模板层——算法层

　　●消息摘要算法MD5(Message Digest)是一种常用的Hash 函数。MD5 算法以一个任意长数据块作为输入，其输出为一个__(64)__比特的消息摘要。

　　(64)A.128 B.160 C.256 D.512

　　●在用UML 对系统进行动态建模时，通常使用活动图。利用活动图有两方面作用：一是对工作流建模，一是对操作建模，此时把活动图作为( 65 )。

　　(65). A. 系统流程图 B. 程序流程图 C.数据流程图 D. 处理流程图

　　●The purpose of the requirements definition phase is to produce a clear, complete, consistent, and

　　testable _(66)_ of the technical requirements for the software product. During the requirements

　　definition phase, the requirements definition team uses an iterative process to expand a broad

　　statement of the system requirements into a complete and detailed specification of each function

　　that the software must perform and each _(67)_ that it must meet. The starting point is usually a

　　set of high level requirements from the _(68)_ that describe the project or problem.

　　In either case, the requirements definition team formulates an overall concept for the system

　　and then defines _(69)_ showing how the system will be operated publishes the system and

　　operations concept document and conducts a system concept review (SCR). Following the SCR,

　　the team derives _(70)_ requirements for the system from the high level requirements and the

　　system and operations concept. using structured or object-oriented analysis. the team specifies the

　　software functions and algorithms needed to satisfy each detailed requirement.

　　(66)A.function B.definition C.specification D.statement

　　(67)A.criterion B.standard C.model D.system

　　(68)A.producer B.customer C.programmer D.analyser

　　(69)A.rules B.principles C.scenarios D.scenes

　　(70)A.detailed B.outlined C.total D.complete

　　●Traditional structured analysis techniques focus upon the flow of __(71)__ within a system.

　　Object-oriented analysis emphasizes the building of real-world models. It examines requirements

　　from the perspective of the classes and objects found in the vocabulary of the __(72)__ domain.

　　Traditional system design method emphasizes the proper and effective structure of a complex

　　system. Object-oriented design method encompasses the process of object-oriented decomposition

　　and a __(73)__ for depicting both logical and physical as well as static and dynamic models of the

　　system under design.

　　Object-oriented programming is a method of implementation in which programs are

　　organized as cooperative collections of objects, each of which represents an __(74)__ of some

　　class, and whose classes are all members of a hierarchy of classes united via __(75)__

　　relationships.

　　(71) A. control B. program C. data D. reference

　　(72) A. problem B. solution C. data D. program

　　(73) A. mark B. picture C. symbol D. notation

　　(74) A. instance B. example C. existence D. implementation

　　(75) A. control B. inheritance C. inference D. connection