220-801 Question #409: Real Exam Question with Answer & Explanation

The correct answer is C: Inverter. The inverter converts the low-voltage DC power from the laptop's power system into the high-voltage AC required to power the CCFL (Cold Cathode Fluorescent Lamp) backlight. Without the inverter supplying the correct electrical current, the backlight cannot illuminate. The backlig

Question

Which of the following laptop components provides direct electrical supply to illuminate the screen's image?

Options

ADC jack
BCMOS battery
CInverter
DBacklight

Explanation

The inverter converts the low-voltage DC power from the laptop's power system into the high-voltage AC required to power the CCFL (Cold Cathode Fluorescent Lamp) backlight. Without the inverter supplying the correct electrical current, the backlight cannot illuminate. The backlight itself is the light source, but the inverter is the component that actively provides and regulates the electrical supply to it. The DC jack delivers power to the laptop overall, and the CMOS battery only maintains BIOS settings.

Community Discussion

No community discussion yet for this question.

Full 220-801 Practice