The original Spanning Tree Protocol (STP) is defined under which IEEE standard?

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Multiple Choice

The original Spanning Tree Protocol (STP) is defined under which IEEE standard?

Explanation:
STP’s purpose is to prevent loops in Layer 2 networks by creating a single active path between switches, electing a root bridge, and blocking redundant paths to form a loop-free tree. The original Spanning Tree Protocol is defined by the IEEE standard 802.1D, which lays out how switches communicate to build the tree, how root and designated ports are chosen, and the timers that control convergence. The other standards refer to different technologies: 802.1Q handles VLAN tagging, 802.3 covers Ethernet fundamentals, and 802.11ac is a Wi‑Fi standard. So the original STP corresponds to 802.1D.

STP’s purpose is to prevent loops in Layer 2 networks by creating a single active path between switches, electing a root bridge, and blocking redundant paths to form a loop-free tree. The original Spanning Tree Protocol is defined by the IEEE standard 802.1D, which lays out how switches communicate to build the tree, how root and designated ports are chosen, and the timers that control convergence. The other standards refer to different technologies: 802.1Q handles VLAN tagging, 802.3 covers Ethernet fundamentals, and 802.11ac is a Wi‑Fi standard. So the original STP corresponds to 802.1D.

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