Match the software maintenance activities in List – I to its meaning in List – II. Codes :List – I List – II I. Corrective (a) Concerned with performing activities to reduce the software complexity thereby improving program understandability and increasing software maintainability. II. Adaptive (b) Concerned with fixing errors that are observed when the software is in use. III. Perfective (c) Concerned with the change in the software that takes place to make the software adaptable to new environment (both hardware and software). IV. Preventive (d) Concerned with the change in the software that takes place to make the software adaptable to changing user requirements.
I-(b), II-(c), III-(d), IV-(a)
Software maintenance is classified into four types by the reason for the change.
I. Corrective maintenance repairs faults discovered while the software is in operation — fixing errors observed in use, i.e. (b).
II. Adaptive maintenance modifies the software so it keeps working in a changed environment such as a new operating system, hardware or platform, i.e. (c).
III. Perfective maintenance adds or improves functionality in response to changing or new user requirements, i.e. (d).
IV. Preventive maintenance restructures and documents the code to reduce complexity and make future maintenance easier, i.e. (a).
Codes that link adaptive maintenance to changing user requirements swap the adaptive and perfective meanings; codes starting with corrective as an environment change or as complexity reduction mislabel the error-fixing activity.
I-(b), II-(c), III-(d), IV-(a) option is correct.
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