Which statement about the configuration of SW2 in relation to STP is true?

The statement that SW2 is the root switch is true in configurations that involve Spanning Tree Protocol (STP). In a network utilizing STP, the root switch serves as the central point for traffic management, and all decisions regarding the forwarding and blocking of ports are made in relation to this switch. The root switch is elected based on the lowest Bridge ID, which is a combination of the switch's priority value and its MAC address. If SW2 has the lowest Bridge ID, it would indeed be declared the root switch, which allows it to control the STP topology and minimize loops within the network.

In practical terms, if a switch is identified as the root switch, it means that all other switches will reference it when determining their role in the STP topology, whether as designated ports, root ports, or blocked ports. This also affects the paths data takes through the network, ensuring effective traffic flow.

The other statements do not accurately reflect the operations or configurations typically pertinent to STP. For instance, a switch needing the lowest MAC address doesn't ensure it's the root unless it also has the appropriate priority. Similarly, being the last switch to send Bridge Protocol Data Units (BPDUs) is not indicative of its role as a root switch,