Practice Quiz

CompTIA A+ 220-802

Category - 802: Troubleshooting

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An employee in the maintenance department complains that his computer will sometimes shut down for no reason. When you enter the maintenance area you hear a noisy fan and notice there is lots of dust around the computer. What do you suspect is the problem?
  1. The CPU fan is clogged with dust and failing.
  2. The hard drive is failing.
  3. The PC case fan is clogged with dust and failing.
  4. The power supply is failing.
Explanation
Answer: C - When a fan is clogged with dust, it will not be able to keep the internal computer components cool enough, and they will overheat. Too much heat and the computer will shut itself down to prevent damage.

Key Takeaway: The PC case fan is the most vulnerable to the exterior environment. To clean, use canned air to blow out dust and lubricate the fan housing with oil.
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