CompTIA A+ Core 1: Power Supplies

Question 1

What is the most likely outcome when a system is booted if the voltage switch on the power supply is set to 220 volts, but the incoming power is only 110 volts?

Answer 1

The system will not boot.

Question 2

At which voltage do system components such as chipset, DIMMs and expansion cards operate?

Answer 2

3.3

Question 3

Which statements correctly characterize the 20-pin motherboard power adapter?

Answer 3

It is the replacement for the P8 and P9 connectors

It provides less power than the 24-pin connector

Question 4

The 80 PLUS certification of a power supply is a measure of which characteristic?

Answer 4

Efficiency

Question 5

Which component of a computer will typically require the most power?

Answer 5

Graphics card

Question 6

Redundant power supplies would typically be found in which types of systems?

Answer 6

Networking equipment

Blade servers

Question 7

A modular power supply offers which benefits to a computer?

Answer 7

Reduced cable clutter

Improved airflow