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Which IEEE standard is referred to as the enhancement of the legacy Spanning Tree Protocol by providing faster convergence time after a link failure?
802.11
802.1D
802.1Q
802.1W
Rapid Spanning Tree Protocol (802.1W) is an enhancement to the legacy STP (802.1D). RSTP provides faster convergence time after a link failure. RSTP has three port states: discarding, learning, and forwarding. Each of these ports will be in forwarding or blocking (discarding) state. The time to converge can take less than 1 second (by default). 802.1Q is an IEEE standard used on VLANs and 802.11 is an IEEE standard for Wireless LANs. (http://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/24062-146.html#newtop)
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