TestOut LabSim A+ Certification Practice Exam

What device protects a computer from electrostatic discharge?

1. Surge protector

2. Anti-static wrist strap

3. Cooling fan

4. Power supply unit

The correct answer is: Anti-static wrist strap

An anti-static wrist strap is designed specifically to protect sensitive electronic components from the harmful effects of electrostatic discharge (ESD). When handling computer hardware, static electricity can build up on the body, and when a person touches components like RAM or a motherboard, this static can discharge and potentially damage those components. The anti-static wrist strap works by creating a ground connection between the user and an electrical ground, allowing any built-up charge to safely dissipate. This ensures that when a technician or user is installing or working with sensitive components, they do so without risking ESD damage. In contrast, other devices listed serve different purposes. A surge protector is primarily designed to protect against voltage spikes and surges from power sources, not static electricity. A cooling fan is used to manage the temperature of components and maintain optimal performance, and a power supply unit provides electrical power to the computer but does not protect against ESD.