UGC NET CSE | September 2013 | Part 3 | Question: 45

Question

Improving processing efficiency or performance or restructuring of software to improve changeability is known as

• A. Corrective maintenance
• B. Perfective maintenance
• C. Adaptive maintenance
• D. Code maintenance

Answer 1

Ans is B Perfective maintenance

There are four types of maintenance, namely, corrective, adaptive, perfective, and preventive.

Corrective maintenance is concerned with fixing errors that are observed when the software is in use.

Adaptive maintenance is concerned with the change in the software that takes place to make the software adaptable to new environment such as to run the software on a new operating system.

 Perfective  maintenance is concerned with the change in the software that occurs while adding new functionalities in the software.

Preventive maintenance involves implementing changes to prevent the occurrence of errors. The distribution of types of maintenance by type and by percentage of time consumed.