Which command on a port enters the forwarding state immediately when a PC is connected to it?

The correct answer is A. switch(config)#spanning-tree portfast default. Portfast (spanning-tree portfast command) does two things for us: • Interfaces with portfast enabled that come up will go to forwarding mode immediately, the interface will skip the listening and learning state. • A switch will never generate a topology change notification for an

Submitted by yuriko_h· Mar 5, 2026Network Access

Question

Which command on a port enters the forwarding state immediately when a PC is connected to it?

Options

Aswitch(config)#spanning-tree portfast default
Bswitch(config)#spanning-tree portfast bpduguard default
Cswitch(config-if)#spanning-tree portfast trunk
Dswitch(config-if)#no spanning-tree portfast

How the community answered

(25 responses)

A
96% (24)
B
4% (1)

Explanation

Portfast (spanning-tree portfast command) does two things for us: • Interfaces with portfast enabled that come up will go to forwarding mode immediately, the interface will skip the listening and learning state. • A switch will never generate a topology change notification for an interface that has portfast https://networklessons.com/switching/cisco-portfast-configuration

Topics

#PortFast#STP#spanning tree#access port configuration

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