Question

What two STP features are incorporated into Rapid PVST+?

1) PortFast
2) BPDU Guard
3) Root Guard
4) Loop Guard
5) UDLD

Answer 1

Rapid PVST+ incorporates two STP features: BPDU Guard and Loop Guard.

Step-by-step explanation:

Rapid PVST+ is a Cisco proprietary implementation of the IEEE 802.1D Spanning Tree Protocol (STP) that provides faster convergence in a Layer 2 network. It incorporates two STP features: BPDU Guard and Loop Guard.

1. BPDU Guard: This feature is used to protect the integrity of the STP topology by shutting down a port if it receives a BPDU (Bridge Protocol Data Unit), which indicates the presence of another switch or the potential formation of a loop.
2. Loop Guard: This feature helps prevent the occurrence of a unidirectional link failure, which can cause a temporary loop in the network. Loop Guard blocks ports that have stopped receiving BPDUs in order to maintain the integrity of the STP topology.