In preparation for a hardware upgrade in a computer, you decide to clean dust from inside the system. What should you use to accomplish this?
Explanation
Answer: B - Use compressed air when cleaning dust from within a system.
Key Takeaway: Working inside of a computer can be potentially when you consider all of the electrical components and that the power supply almost always maintains a small charge. You should not use anything that can contribute electro-static discharge, such as a vacuum cleaner, or excess moisture, which can be caused by a damp cloth or even your own breath. Using compressed air, which is specifically packaged to ensure no-ESD, is the safest method of cleaning inside a computer.
