QuestionQ1165

Network Access

Which two spanning-tree states are skipped on an interface that is running PortFast?

Choose two
  • A disabled
  • B listening
  • C learning
  • D blocking
  • E forwarding
Explanation

PortFast makes an access/edge switch port transition to forwarding immediately instead of waiting through the normal STP convergence delay. The intermediate STP states it bypasses are listening and learning, which is why end devices connected to PortFast ports can start sending traffic without the usual startup delay.

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