Chapter 5

Question 1

You are fixing a computer for a customer when you notice a few of the fluorescent
lights flickering every now and then. What should you recommend to the
customer to protect their equipment?
❍ A. To get an electrician
❍ B. To install a UPS
❍ C. To get an extra power supply
❍ D. To buy a generator

Answer 1

❍ B. To install a UPS

Question 2

A company salesperson just returned to the United States after 3 months in
Europe. Now the salesperson tells you that the PC, which worked fine in Europe,
won’t turn on. What is the best solution?
❍ A. Install a new power supply.
❍ B. The computer will not work in the United States due to European
licensing.
❍ C. Install a power inverter to the power supply.
❍ D. Change the voltage from 230 to 115.

Answer 2

❍ D. Change the voltage from 230 to 115.

Question 3

You are troubleshooting a computer that won’t power on. You have already
checked the AC outlet and the power cord, which appear to be functioning properly.
What should you do next?
❍ A. Test the computer with a PSU tester.
❍ B. Plug the computer into a different outlet.
❍ C. Check that the RAM is seated correctly.
❍ D. Install a UPS.

Answer 3

❍ A. Test the computer with a PSU tester.

PSU = Power Supply Tester

Question 4

You suspect that incorrect voltage is provided to a power supply. What tool
should you use to test this?
❍ A. PSU tester
❍ B. Loopback adapter
❍ C. Multimeter
❍ D. Voltage detector

Answer 4

❍ C. Multimeter

Question 5

You just upgraded a motherboard in a computer, and put the system back
together. It boots, but the power LED on the front of the computer case doesn’t
light when the system is on. The rest of the computer seems to work fine. What
should you do first?
❍ A. Check the power supply.
❍ B. Check the power LED pinout.
❍ C. Replace the LED.
❍ D. Replace the power button.

Answer 5

❍ B. Check the power LED pinout.

Question 6

A computer you are troubleshooting shuts down without warning. After a few
minutes it boots back up fine, but after running for a short time, it shuts down
again. What components could be the cause? (Select the two best answers.)
❍ A. Power supply
❍ B. SATA hard drive
❍ C. RAM
❍ D. CPU fan
❍ E. Video card

Answer 6

❍ A. Power supply

❍ D. CPU fan