C-03-Q023mediumsingle_mcq
Which of the following is an example of preventive maintenance?
Which of the following is an example of preventive maintenance?
- aReplacing a burnt power supply
- bVirus scanning
- cSoldering broken capacitors
- dReplacing the hard disk after crash
ব্যাখ্যা
Virus scanning is done routinely to detect and prevent problems before they damage the system, which is the defining feature of preventive maintenance. The other options all involve repairing or replacing parts after a failure, which is corrective maintenance.