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Tribhuvan university > CSIT - 2065 Syllabus > Software Engineering > Old Questions > 2071(II)

Software Engineering - Old Questions

Syllabus Notes Old Questions Unit Wise Questions Question Bank

7. Explain the software maintenance and its types.

6 marks | Asked in 2071(II)

Software Maintenance is the process of modifying a software product after it has been delivered to the customer. The main purpose of software maintenance is to modify and update software application after delivery to correct faults and to improve performance.

Following are some types of maintenance:

1. Corrective Maintenance - This includes modifications and updations done in order to correct or fix problems, which are either discovered by user or concluded by user error reports.

2. Adaptive Maintenance - This includes modifications and updations applied to keep the software product up-to date and tuned to the ever changing world of technology and business environment.

3. Perfective Maintenance - This includes modifications and updates done in order to keep the software usable over long period of time. It includes new features, new user requirements for refining the software and improve its reliability and performance.

4. Preventive Maintenance - This includes modifications and updations to prevent future problems of the software. It aims to attend problems, which are not significant at this moment but may cause serious issues in future.