Which of the following is true regarding STP configuration?

The choice stating that STP can only have one root bridge is accurate because of how the Spanning Tree Protocol is designed to prevent loops in a network. STP operates by electing a single root bridge within a Layer 2 network topology. This root bridge serves as the central point of reference for all switches in the network. The protocol calculates the shortest path from the root bridge to all other switches while ensuring redundancy by blocking redundant paths.

Having a single root bridge simplifies the topology and loop prevention process, allowing STP to maintain a stable and efficient network. If there were multiple root bridges, it could lead to network loops, ultimately resulting in broadcast storms and instability.

In contrast, while STP is predominant in local area networks (LANs), it can technically be part of larger network designs that might involve interconnections and higher-layer discussions, although its primary function is within the confines of Layer 2 devices, mainly switches. STP configurations pertain to how switches intelligently manage their connections to maintain a loop-free network topology. As such, STP is mainly used in Layer 2 environments, but it doesn’t necessitate that configurations apply solely there.