Adaptive maintenance is a maintenance which __________.
is carried out to port the existing software to a new environment.
Software maintenance is classified as corrective, adaptive, perfective and preventive.
Adaptive maintenance modifies software so that it keeps working in a changed environment, such as a new operating system, hardware platform or database.
Fixing undiscovered errors is corrective maintenance and improving performance is perfective maintenance, so the combined choice is also wrong.
So adaptive maintenance ports the software to a new environment.
Hence, is carried out to port the existing software to a new environment.
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