【正文】 ry to describe the primary differences between structured analysis and objectoriented analysis. Answer: Structured analysis begins with a consideration of the data objects that the system must manipulate. In structured analysis the data objects are described with a data dictionary and the entity relation diagram (ERD) depicts relationships between data objects. The flow and transformation of data through a system are represented using the data flow diagram (DFD). The structured analysis also incorporates a behavioral modeling notation called the state transition diagram (STD). In the object oriented analysis model, classbased elements model the objects that the system will manipulate, the operations that will be applied to the objects to effect the manipulation, relationships (some hierarchical) between the objects, and the collaborations that occur between the classes that are defined. In addition the OO model represents the behavior of objects and the behavior of the system 1. Which of the following are areas of concern in the design model? Answer: e a. architecture b. data c. interface d. project scope e. a, b and c 2. Which of these are characteristics of a good design? Answer: e a. exhibits strong coupling between its modules b. implements all requirements in the analysis model c. includes test cases for all ponents d. provides a plete picture of the software e. both b and d 3. Information hiding makes program maintenance easier by hiding data and procedure from unaffected parts of the program. Answer: a a. True b. False 4. Cohesion is a qualitative indication of the degree to which a module Answer: b a. can be written more pactly. b. focuses on just one thing. c. is able to plete its function in a timely manner. d. is connected to other modules and the outside world. 5. Coupling is a qualitative indication of the degree to which a module Answer: d a. can be written more pactly. b. focuses on just one thing. c. is able to plete its function in a timely manner. d. is connected to other modules and the outside world. 6. Polymorphism reduces the effort required to extend an object system by Answer: b a. coupling objects together more tightly. b. enabling a number of different operations to share the same name c. making objects more dependent on one another. d. removing the barriers imposed by encapsulation. 7. Which design model elements are used to depict a model of information represented from the user39。s desire for a set of defined capabilities into a working product. Answer:A a. True b. False notations that can be used to model the hardware and software elements of a system are a. Activity diagrams b. Class diagrams c. Deployment diagrams d. Usecase diagrams e. a, b, and c Answer: e 6. The system model template contains which of the following elements a. input b. output c. user interface d. all of above Answer: d 7. The top level of the hierarchical model of a system is known as the a. AFD b. DFD c. SCD d. SFD Answer: c 8. Select any large system or product with which you are familiar. Define the set of domains that describe the world view of the system or product. Describe the set of elements that make up one or two domains. For one element, identify the technical ponents that must be engineered. BPE (Business Process Engineering) world view: bank domains: loans, savings, foreign exchange elements of savings: Window service, Online service, ATM service technical ponents of Online service: customer identify (security), munication, database Product Engineering world view: smart phone domains: chipset, software elements of software: OS, application platform technical ponents of application platform: munication, security, utility (telephone book, calendar) 1. In requirements validation the requirements model is reviewed to ensure its technical feasibility.