What is the consequence of a switching loop in a network?

In a networking context, a switching loop occurs when there are multiple paths between switches, which can lead to broadcast storms, excess traffic, and overall network congestion. The significant consequence of a switching loop is indeed a self-imposed denial of service. This denial of service arises because the network becomes overwhelmed with broadcast traffic generated by the loops, which can prevent legitimate traffic from passing through and disrupt normal network operations. The resultant broadcast storms can consume substantial bandwidth, effectively incapacitating the network and rendering it unusable for legitimate users.

Conversely, the other options do not accurately represent the consequences of a switching loop. Increased throughput, enhanced network security, and reduced latency are generally positive outcomes that a well-configured network aims to achieve, but they are not results of a switching loop. In fact, rather than increasing throughput or enhancing security, a switching loop severely degrades network performance and reliability.