CompTIA A+ Certification For Dummies (Book 1, Chapter 3)

Question 1

A grounding wrist strap contains a: 
A) Surge protector 
B) Capacitor 
C) Voltmeter 
D) Resistor

Answer 1

D) An ESD wrist strap contains a resistor.

Question 2

Computer chips and components can be destroyed with as little as: 
A) 3,000 volts 
B) 200 volts 
C) 500 volts 
D) 900 volts

Answer 2

B) 200V.

Question 3

EPA stands for: 
A) Environmental Protection Association 
B) Environmental Protection Agency 
C) Environmental Preservation Agency 
D) Environmental Preservation Association

Answer 3

B) The Environmental Protection Agency (EPA) provides guidelines on how the components should be disposed of.

Question 4

ESD stands for:
A) Electrostatic discharge 
B) Electrostationary discharge 
C) Electrostatic disruption
D) None of the above

Answer 4

A) Electrostatic discharge, or ESD, occurs when two objects carry a charge of different amounts, and the charge is transferred from one object to another to balance the charge.

Question 5

RSI stands for:
A) Restive strain injury 
B) Repetitive self-injury 
C) Restrictive system injury 
D) Repetitive strain injury

Answer 5

D) When you continuously work with your computer for prolonged periods of time, there is a chance of developing a repetitive strain injury.

Question 6

The risk for electrostatic discharge is the greatest at: 
A) Daytime 
B) High humidity 
C) Low humidity 
D) Nighttime

Answer 6

C) The risk for electrostatic discharge is greatest at low humidity.

Question 7

The static shock one commonly feels is typically about how many volts? 
A) 3,000
B) 200 
C) 10 
D) 5

Answer 7

A) The shock we give one another is typically 3,000V.

Question 8

What does EMI stand for? 
A) Electromagnetic interference 
B) Motor interference 
C) Electromechanical interference 
D) Emits magnetic interference

Answer 8

A) EMI — electromagnetic interference — is electrical interference from an external source.

Question 9

Which of the following is considered high-voltage equipment? (Select all that apply.) 
A ) Printers 
B ) CRTs 
C ) Power supply units 
D) Hard drives

Answer 9

B) CRT’s and C) Power supply units

Question 10

You can prevent damage from ESD by: 
A) Keeping the air dry 
B) Using a multimeter 
C) Using a grounding wrist strap 
D) Using a static meter

Answer 10

C) You can prevent damage from ESD by using a grounding wrist strap.