Comprehensive Explanation: In STP, the switch with the lowest Bridge ID is selected as the root bridge. The Bridge ID consists of the bridge priority and the MAC address. In this case, the switch with the bridge priority of 4096 has the lowest Bridge ID, making it the root bridge. If two switches have the same bridge priority, the MAC address is used to break the tie, with the lower MAC address winning.

* Understanding Loops in Layer 2 Networks:
* Layer 2 switches flood broadcast and unknown unicast packets.
* If there is a loop, these packets can circulate indefinitely, leading to a broadcast storm.
* Consequences of Broadcast Storms:
* High CPU usage on network devices.
* Degraded network performance or complete failure.
* Solution:
* Spanning Tree Protocol (STP) is implemented to prevent loops by selectively blocking redundant links.
* Conclusion:
* Since loops lead to broadcast storms, the statement is TRUE.
References: HCIA-Datacom V1.0 Certification Guide, Chapter 8: Spanning Tree Protocol.

* In Spanning Tree Protocol (STP), the Port ID consists of:
* 8-bit Port Priority
* 8-bit Port Number
* This results in a total length of 16 bits.
* B, C, and D are incorrect since they do not represent the full length of the Port ID.
Thus, the correct answer is A (16 bits).

The Forward Delay timer in STP helps prevent temporary loops by setting a delay for ports transitioning through Listening and Learning states before reaching the Forwarding state. This wait period ensures that all switches have updated topology information, reducing the risk of broadcast storms or loops.