Why is dust an enemy to a computer?
What will too much or too little humidity do to a computer?
When considering HVAC, what is the difference between a positive pressure system and a negative pressure system?
What causes EMI? What can you do to prevent EMI problems?
What types of materials can you use to clean internal PC components?
When is it important to use an anti-static vacuum?
How are backups related to preventive maintenance?
What is the difference between a surge and a spike?
Which type of device protects equipment from over-voltages?
What is the difference between the way an online UPS provides power to a system and the way an offline UPS provides power?