What are two benefits of using the PortFast feature? (Choose two.)

What are two benefits of using the PortFast feature? (Choose two.)

A. Enabled interfaces are automatically placed in listening state. B. Enabled interfaces wait 50 seconds before they move to the forwarding state. C. Enabled interfaces never generate topology change notifications. D. Enabled interfaces come up and move to the forwarding state immediately. E. Enabled interfaces that move to the learning state generate switch topology change notifications.