What type of alert is given to signal a system failure?

A warning light or alarm is specifically designed to signal a system failure, providing an immediate and clear indication that something is wrong. These alert systems are typically visually or audibly distinct, catching the attention of the user quickly in critical situations, which is essential for prompt action.

Visual signals or texts, while informative, may not convey urgency as effectively as a warning light or alarm. Voice announcements can be useful for conveying information, but they also may not be as immediate or ideal for urgent alerts. Email notifications, although helpful for non-urgent updates, lack the real-time immediacy required to address system failures. Therefore, the direct and attention-grabbing nature of warning lights or alarms makes them the most appropriate choice for signaling a system failure.