220-801 Question #745: Real Exam Question with Answer & Explanation

The correct answer is A: Hold the metal of the case. When a PC is plugged into a grounded outlet (but powered off), the metal chassis is connected to electrical ground through the power supply's ground wire. By touching the bare metal of the case, the technician equalizes their electrostatic potential with the case, reducing the ri

Question

A technician is working on a PC but does not have their grounding strap. Which of the following would be the BEST method the technician should use to ground themselves?

Options

AHold the metal of the case
BHold on to the power cord
CTake off their shoes
DUnplug the PC

Explanation

When a PC is plugged into a grounded outlet (but powered off), the metal chassis is connected to electrical ground through the power supply's ground wire. By touching the bare metal of the case, the technician equalizes their electrostatic potential with the case, reducing the risk of electrostatic discharge (ESD) damage to components. Holding the power cord is dangerous. Removing shoes does not reliably dissipate static. Unplugging the PC removes the ground reference entirely, making static discharge more likely.

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