What are two reasons to configure PortFast on a switch port attached to an end host? (Choose two.)

The correct answer is B. to enable the port to enter the forwarding state immediately when the host boots up D. to protect the operation of the port from topology change processes. What are two features of PortFast? Portfast 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 i

Submitted by takeshi77· Mar 5, 2026

Question

Options

Ato block another switch or host from communicating through the port
Bto enable the port to enter the forwarding state immediately when the host boots up
Cto prevent the port from participating in Spanning Tree Protocol operations
Dto protect the operation of the port from topology change processes
Eto limit the number of MAC addresses learned on the port to 1

How the community answered

(50 responses)

A
2% (1)
B
90% (45)
C
2% (1)
E
6% (3)

Explanation

What are two features of PortFast? Portfast 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 enabled.

Topics

#PortFast#STP#Switch Port Configuration

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