Which two STP states does PortFast bypass on a port? (Choose two.)

PortFast is a Cisco proprietary feature that immediately transitions a switch port into the forwarding state, bypassing the listening and learning states of Spanning Tree Protocol (STP). This is beneficial for end devices like workstations and servers, as it allows them to connect to the network without the typical 30-50 second delay caused by STP's convergence process. PortFast should only be enabled on access ports connected to end devices, not on ports connected to other switches, to prevent potential bridging loops. The disabled state means the port is administratively shut down. Blocking and forwarding are standard STP states that PortFast aims to bypass or reach directly.