What is the primary function of the Spanning Tree Protocol in Ethernet networks?

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Multiple Choice

What is the primary function of the Spanning Tree Protocol in Ethernet networks?

The main idea here is preventing loops in a network with multiple switches. When there are redundant paths, frames can circulate endlessly, creating duplicate traffic and destabilizing the network’s ability to learn MAC addresses. Spanning Tree Protocol steps in by selecting a root bridge, calculating the best paths to it, and putting enough redundant links into a non-forwarding (blocked) state so that only one active path exists between any two devices. This creates a loop-free topology, allowing frames to move toward their destination without getting trapped in cycles. If a link fails, STP can re-enable a previously blocked path to maintain connectivity. The other options don’t fit as well because STP isn’t about enabling loops, and while preventing loops also prevents broadcast storms, its primary function is to stop switching loops from forming. It doesn’t directly manage data collisions in modern switched networks, and routing loops are handled by layer-3 routing protocols, not STP.

The main idea here is preventing loops in a network with multiple switches. When there are redundant paths, frames can circulate endlessly, creating duplicate traffic and destabilizing the network’s ability to learn MAC addresses. Spanning Tree Protocol steps in by selecting a root bridge, calculating the best paths to it, and putting enough redundant links into a non-forwarding (blocked) state so that only one active path exists between any two devices. This creates a loop-free topology, allowing frames to move toward their destination without getting trapped in cycles. If a link fails, STP can re-enable a previously blocked path to maintain connectivity.

The other options don’t fit as well because STP isn’t about enabling loops, and while preventing loops also prevents broadcast storms, its primary function is to stop switching loops from forming. It doesn’t directly manage data collisions in modern switched networks, and routing loops are handled by layer-3 routing protocols, not STP.

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