CCNA Switching and Network Access Practice Question

Correct answer & explanation

The correct order begins by entering global configuration mode, then enabling Rapid PVST+ so that subsequent spanning-tree commands operate under that mode. Next, the switch is designated as the root bridge for VLAN 1 using 'spanning-tree vlan 1 root primary', which sets a superior bridge priority. After the root election is influenced, PortFast is applied to all access interfaces to transition them directly into forwarding state. Finally, BPDU Guard is enabled globally to protect all PortFast-enabled ports; if a BPDU is received on such a port, it is immediately put into err-disabled state, preventing potential loops. Each step builds on the previous one: enabling Rapid PVST+ must precede root setup, root selection should be completed before any access-port optimization, and BPDU Guard is applied last to secure the already-accelerated ports.