9. What is transaction-processing application? A) proerams are allowed to interact only with one other B) data centric that processes user requests D) data flow is one way A) has no single point of failure B) components are highly dependent upon knowing of other components D) decentralised tooks 11. What is one of the 5 key activities in an object-oriented design? A) identify the principal objects in the system B) identify only small, non-principal object C) entity relationships must be fully documented D) create all UML sequence diagrams 12. What is one of the 3 approaches that may be used for identifying object classes? A) prototyping with a mock-up system B) use grammatical analysis of natural language description of the system C) fully develop entity relationship diagrams D) fully develop UML sequence diagram 13. What is software verification? A) building software that correctly meets all requirements B) building software that meets only system requirements C) building software that meets only non-functional requirements D) building software that meets only design requirements 14. What is one of the 4 levels at which software reuse is possible? A) system level B) process level C) entity relationship level D) interface level 15. A class of interface error is A) declaration overloading B) shared memory errors C) isolation errors: D) abstraction testing Choose 3 principal stages of testing a commercial software system. (Mark a dark, clear ' X ' for choices) prototype testing beta testing user testing data testing development testing reledse testing