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200-301 · Question #962
200-301 Question #962: Real Exam Question with Answer & Explanation
The correct answer is C: learning. When PortFast is enabled on an access port, it immediately transitions to the forwarding state, bypassing the listening and learning states of Spanning Tree Protocol (STP).
Submitted by mateo_ar· Mar 5, 2026Network Access
Question
Which state is bypassed in Rapid PVST+ when PortFast is enabled on a port?
Options
- Ablocking
- Bforwarding
- Clearning
- Ddiscarding
Explanation
When PortFast is enabled on an access port, it immediately transitions to the forwarding state, bypassing the listening and learning states of Spanning Tree Protocol (STP).
Common mistakes.
- A. Blocking is an STP state, but PortFast primarily bypasses the listening and learning states, accelerating the transition to forwarding.
- B. Forwarding is the desired operational state for an active port, not a state that is bypassed; rather, PortFast accelerates the transition to the forwarding state.
- D. Discarding is a general term for blocking traffic and encompasses the blocking and listening states in some STP versions, but the specific state bypassed in terms of MAC address table population is the learning state.
Concept tested. PortFast and STP states
Reference. https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/10556-16.html
Topics
#Rapid PVST+#PortFast#STP port states
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