单选题 Feasibility should be measured throughout the life cycle of system development. The scope and complexity of an apparently feasible project can change after the initial problems and opportunities are fully analyzed of after the system has been designed. Thus, a project that is feasible at one point may become infeasible later. The first feasibility analysis is conducted during the ______. The ______ represents a major feasibility analysis activity since it charts one of many possible implementations as the target for systems design. ______ is a measure of how well the solution will work in the organization. It is also a measure of how people feel about the system. When it is determined in the later stages of the system life cycle, ______ is often performed with a working prototype of the proposed system. This is a test of the system"s user interfaces and is measured in how easy they are to learn and to use and how they support the desired productivity levels of the users. Economic feasibility has been defined as a cost-benefit analysis. The ______ technique is a simple and popular method for determining if and when an investment will pay for itself.
【正确答案】 A
【答案解析】
【正确答案】 C
【答案解析】
【正确答案】 A
【答案解析】
【正确答案】 C
【答案解析】
【正确答案】 A
【答案解析】在整个系统生命周期中都应该度量可行性。在初始问题和机会被全面地研究以后,或者当系统被设计之后,一个明显可靠的项目范围和复杂性也可能会发生变化。因此,一个以前可行的项目后来可能会变得不可行。在问题分析阶段,将进行第一次可行性分析。最主要的可行性分析是需求分析阶段,因为该阶段以图表形式展现系统设计目标的各种可能性。操作可行性是对方案在组织中的合适程度的度量,它也是就人们对该系统的感觉的度量。当在系统生命周期的后期阶段时,我们经常以被建议系统的一个可工作原型为基础进行可用性分析。这种分析是对系统用户界面的测试,并且度量其易学易用程度以及支持用户期望的工作效率等级的程度。经济可行性经常被称为成本效益分析。投资回收率分析技术是一种简单而又流行的衡量投资什么时间能收回的方法。