On an STP-enabled switch, a port in the Learning state can transition to the Forwarding state only after the Forward Delay timer expires.

In the Spanning Tree Protocol (STP), a port transitions through several states to prevent network loops. After the Listening state, a port enters the Learning state. In this state, the port begins to learn MAC addresses and populate the MAC address table, but it does not yet forward user data frames. The port remains in the Learning state for the duration of the Forward Delay timer (default 15 seconds). Only after this timer expires does the port transition to the Forwarding state, where it can both learn MAC addresses and forward data frames. This delay ensures that any outdated MAC address information from a previous topology has aged out, preventing temporary loops.

This is a True/False question, so there are no other options.

1. Huawei HCIA-Datacom V1.0 Training Material. (2020). Module: STP Principles. Section: "STP Port States". The material describes the transition from Learning to Forwarding as being controlled by the Forward Delay timer. It states, "Learning: A port can learn MAC addresses to populate the MAC address table, but does not forward user traffic. The port status duration is specified by the Forward Delay timer."

2. Kurose, J. F., & Ross, K. W. (2021). Computer Networking: A Top-Down Approach (8th ed.). Pearson. Chapter 6, Section 6.4.4 "Spanning Tree Protocol" describes the state transitions, noting the delay before a port enters the forwarding state to ensure a stable, loop-free topology.