Which protocol prevents Layer 2 loops by creating a tree of paths and blocking redundant links?

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Study for the Network Security Instructional Terminology Test. Enhance your knowledge with multiple choice questions, each accompanied by hints and explanations. Ensure readiness for your exam!

Multiple Choice

Which protocol prevents Layer 2 loops by creating a tree of paths and blocking redundant links?

Explanation:
Preventing Layer 2 loops comes from creating a loop-free topology, and Spanning Tree Protocol does exactly that. It builds a tree of active paths by electing a root bridge and then selecting one forwarding path to every network segment. All other redundant links are put into a blocked state, so there’s only a single active path between any two devices. This stops broadcast storms and frame duplication caused by switching loops. If a link fails, STP can re-enable a blocked path to maintain connectivity, with newer variants like Rapid Spanning Tree improving convergence speed. The other options don’t provide this loop-prevention mechanism: a star topology is a physical layout, spoofing is an attack on MAC addresses, and spyware is malware.

Preventing Layer 2 loops comes from creating a loop-free topology, and Spanning Tree Protocol does exactly that. It builds a tree of active paths by electing a root bridge and then selecting one forwarding path to every network segment. All other redundant links are put into a blocked state, so there’s only a single active path between any two devices. This stops broadcast storms and frame duplication caused by switching loops. If a link fails, STP can re-enable a blocked path to maintain connectivity, with newer variants like Rapid Spanning Tree improving convergence speed. The other options don’t provide this loop-prevention mechanism: a star topology is a physical layout, spoofing is an attack on MAC addresses, and spyware is malware.

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