Which protocol prevents network loops by creating a tree structure?

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Multiple Choice

Which protocol prevents network loops by creating a tree structure?

Explanation:
The idea being tested is how to prevent loops in a switched network by creating a single, loop-free topology. Spanning Tree Protocol does this by building a tree that spans all switches in a network. It exchanges information (BPDUs) to elect a root bridge, calculates the best path to the root based on path costs, and then blocks redundant ports to ensure there is only one active path between any two devices. This blocking removes potential cycles, so frames don’t loop endlessly. If a link fails, STP can re-enable a blocked port to re-establish connectivity, and modern variants like Rapid Spanning Tree Protocol converge much faster. In contrast, the other options are Layer 3 routing protocols and don’t prevent Layer 2 switch loops by creating a spanning tree.

The idea being tested is how to prevent loops in a switched network by creating a single, loop-free topology. Spanning Tree Protocol does this by building a tree that spans all switches in a network. It exchanges information (BPDUs) to elect a root bridge, calculates the best path to the root based on path costs, and then blocks redundant ports to ensure there is only one active path between any two devices. This blocking removes potential cycles, so frames don’t loop endlessly. If a link fails, STP can re-enable a blocked port to re-establish connectivity, and modern variants like Rapid Spanning Tree Protocol converge much faster. In contrast, the other options are Layer 3 routing protocols and don’t prevent Layer 2 switch loops by creating a spanning tree.

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