A broadcast storm involves an abundance of broadcast traffic on the network, which can consume enough network resources to effectively bring regular traffic to a halt. It is crucial to understand the disruptive potential of a broadcast storm, as it can degrade the performance and stability of the network, causing slow speeds or complete network outages. Awareness of this concept allows technicians to identify and mitigate issues more effectively. The incorrect answers are related to other network issues but do not accurately describe the consequence of a broadcast storm.