Which of the following is an appropriate approach to performing maintenance work for
hardware?
a) Maintenance work should be planned and performed only after diagnostic and
predictive information, such as warning indicator or error log, is provided.
b) Maintenance work should be performed on a scheduled basis even when there is no
fault or failure detected.
c) Maintenance work should be suspended until the next periodical inspection even
when a sensuous change such as “operation noise louder than usual” is detected.
d) Maintenance work is required only for printers and storage devices that involve
mechanical operations.