Which STP feature bypasses listening and learning and places a port immediately into forwarding?

PortFast immediately transitions a switch port into the forwarding state, bypassing the listening and learning states of STP. This is typically used on access ports connected to end devices (like workstations or servers) that do not generate BPDUs and do not need to participate in the STP election process. This speeds up device connectivity and prevents delays. BPDUfilter prevents a port from sending or receiving BPDUs, effectively disabling STP on that port. Backbonefast is an STP enhancement that reduces convergence time after an indirect link failure. BPDUguard disables a port if it receives a BPDU, preventing unauthorized devices from influencing the STP topology.