What action is recommended to safeguard against unexpected power outages?

Using a backup power source is essential for safeguarding against unexpected power outages. A backup power source, such as an uninterruptible power supply (UPS) or a generator, ensures that critical systems remain operational during a power interruption. This is particularly important for businesses and individuals who rely on technology for day-to-day operations, as power outages can lead to data loss, damage to hardware, and interruptions in essential services.

In contrast, upgrading network bandwidth, performing regular software updates, and implementing stronger passwords, while beneficial to overall system performance and security, do not directly address the issue of power stability. Network bandwidth affects data transfer speed, software updates enhance functionality and security, and strong passwords protect against unauthorized access, but these actions do not prevent the consequences of a power outage. Therefore, a backup power source is the most effective measure to ensure continuity and protect against the unexpected disruptions that power outages can cause.