CompTIA Network+ Practice Test 2026 - Free Network+ Practice Questions and Exam Prep Guide

A power surge, which is a sudden increase in voltage that exceeds the designated level in a flow of electricity, poses a significant risk primarily because it can lead to damage to electronic devices. When the voltage spikes, it can overwhelm the components within devices such as computers, printers, and televisions, potentially causing immediate failure or long-term degradation of performance.

Electronic devices are designed to operate within specific voltage ranges. When the voltage exceeds this safe range, it can result in overheating, melting of internal components, or burning out essential circuits. This kind of damage can be costly to repair or may even necessitate complete replacement of the affected devices.

The other options do not accurately represent risks associated with power surges. For example, an increase in energy efficiency would typically be seen as a positive outcome, not a risk. Similarly, enhanced power supply is also beneficial, and intermittent connectivity does not directly relate to the effects of power surges in the same way that device damage does. Understanding these concepts is essential for anyone engaged in network management or IT support, as it emphasizes the importance of protecting equipment against power-related issues.