C. Maintenance
is an important practice can help prevent hardware trouble. Maintenance involves operational and
functional checks, servicing, repairing or replacing if necessary. Maintenance has
two types which are preventive
or scheduled maintenance and corrective maintenance. Inspecting, maintaining
and protecting a device, equipment or facilities before breaking down or other
problems occur it is called preventive while corrective is when it is repaired
or replaced after wear, malfunction or break down.
