单选题某计算机系统的可靠性结构如下所示，若所构成系统的每个部件的可靠度分别为R1、R2、R3和R4，则该系统的可靠度为（14）。

单选题大规模并行处理(MPP)计算机的特点是 (17) 。 A．这种系统最适合SIMD计算模式 B．这种系统可以实现多条流水线并行处理 C．这种系统编程容易，但难于管理 D．这种系统由大量通用微处理器构成

单选题某系统采用请求页式存储管理方案。假设某进程有6个页面，系统给该进程分配了4个存储块

单选题The software architecture of a program or computing system is the structure or structures of the system, which comprise software______, the externally ______ properties of those components, and the relationships between them. The architecture is not the operational software. Rather, it is a ______ that enables a so, ware engineer to: analyze the ______ of the design in meeting its stated requirements, consider architectural alternatives at a stage when making design changes is still relatively easy, and reduce the ______ associated with the construction of the software.

单选题A．事务处 B．现行人工和电算化混合的信息系统 C．企业战略目标 D．第一把手要求

单选题Information systems design is defined as those tasks that focus on the specification of a detailedcomputer-based solution. Typically, there are four systems design tasks for in-house development. 1) The first task is to specify ______, which defines the technologies to be used by one, more,or all information systems in terms of their data, processes, interfaces, and network components. This taskis accomplished by analyzing the data models and process models that are initially created duringrequirements analysis. 2) The next systems design task is to develop the ______. The purpose of this task is to preparetechnical design specifications for a database that will be adaptable to future requirements and expansion. 3) Once the database prototype has been built, the systems designer can work closely with systemusers to develop input, output and dialogue specifications. The ______ must be specified to ensurethat the outputs are not lost, misrouted, misused, or incomplete. 4) The fourth design task involves packaging all the specifications from the previous design tasksinto a set of specifications that will guide the ______ activities during the following phases of thesystems development methodology. Finally, we should ______ and update the project plan accordingly. The key deliverableshould include a detailed plan for the construction phase that should follow.

单选题假定用户A、B分别在I1和I2两个CA处取得了各自的证书，（ ）是A、B互信的必要条件。

单选题软件的分层式体系结构把软件系统划分为4层，这4层结构自顶向下分别是(34)。

单选题网络设计过程包括逻辑网络设计和物理网络设计两个阶段，下面的选项中，______应该属于逻辑网络设计阶段的任务。

单选题载重量限24吨的某架货运飞机准备选装若干箱金属原料运往某地。供选择的各箱原料的重量、运输利润如下表所示。 箱号 1 2 3 4 5 6 重量(吨) 8 13 6 9 5 7 利润(千元) 3 5 2 4 2 3 经优化安排，该飞机本次运输可以获得的最大利润为 (58) 千元。 A．11 B．10 C．9 D．8

单选题类封装了信息和行为，是面向对象的重要组成部分。在系统设计过程中，类可以分为实体类、边界类和控制类。下面用例描述中属于控制类的是（ ）。

单选题设B={P, Q}, 则B 上可以定义 (55) 个等价关系。

单选题设f(x)=(x-1)(x-2)(x-3)，则方程f′(x)=0在(0，3)内的根的个数为 (56) 。 A) 1 B) 2 C) 3 D) 4

单选题 (60) 是适合作为多媒体创作工具的软件。 A．Authorware B．Photoshop C．CoolEditPro D．3dsMax

单选题已知有6个村A～F，相互间的道路距离(单位：里)如下图所示。计划在其中某村建一所学校。据统计，各村希望来上学的学生人数分别为50、40、60、20、70、90。为使全体学生上学所走的总距离最短，学校应建在__________村。

单选题操作系统为了解决进程间合作和资源共享所带来的同步与互斥问题，通常采用的一种方法是使用 (42) 。某系统中有3个并发进程，都需要同类资源4个，试问该系统不会发生死锁的最少资源数是 (43) 。

单选题正式技术复审(FTR)是一种由软件工程师进行的软件质量保证活动，下面活动不属于FTR范畴的是 (25) 。 A．在软件的任何一种表示形式中发现功能、逻辑或实现的错误 B．明确声明软件的功能和性能需求，明确文档化的开发标准 C．证实经过复审的软件确实满足需求 D．保证软件的表示符合预定义的标准