Discussion
Which type of software maintenance involves fixing bugs discovered after deployment ?
Answer: C
Fixing bugs found after deployment is corrective maintenance.
Corrective maintenance diagnoses and repairs faults that users report once the software is in use: errors in logic, coding or design that testing missed.
Adaptive maintenance changes the software to fit a new environment, perfective maintenance improves performance or adds refinements, and preventive maintenance restructures the software to stop problems appearing later. None of these is about correcting faults already found.
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