a) Define the term software maintenance 2 Marksb) Discuss four importance of maintenance 4 Marksc) Describe four types of maintenance stating when each is applicable 8 Marksd) Discuss the following quality factors in software, stating the metrics for measuringeach one of them 4 Marksi). Portabilityii). Usability

a) Define the term software stating the types of software products. (4 Marks)b) Assume that you are a software engineer practicing in a software development firm.Assume further that your team mates have been undertaking some unethical practicesduring their course of duty. Discuss four issues of professional responsibility that youwould advise them to follow. (8 Marks)c) Discuss four software cost estimation techniques (8 Marks)d) Giving examples discuss the types of non-functional requirements (6 Marks)e) Discuss four sources of changes in software requirements. (4 Marks)

b) Define the term software maintenance. (2 Marks)c) Describe four types of maintenance stating when each is appropriate (4 Marks)d) An organization has the following categories of employees. There two broad categories ofemployees: Managers and programmers. There are three types of managers: projectmanagers, department managers and strategic managers Using OOD and UML notationcreate a class hierarchy diagram and use it to illustrate the concept of inheritance.(6 Marks)

Software maintenance and types of maintenance

a) Discuss five system characteristics that must be considered in architectural design.(5 Marks)b) Software projects under development will always consume resources, e.g. costs. Describe thevarious cost items needed in a software development project. (5 Marks)c) Differentiate between static and dynamic verification. (4 Marks)d) Discuss four characteristics of good software. (6 Marks)

Types of Maintenance (must know : definition , difference, causes, need