Refer to the exhibit. Consider that the main power has just been restored. PC3 issues a broadcast IPv4 DHCP request. To which port will SW1 forward this request?
- to Fa0/1 only
- to Fa0/1 and Fa0/2 only
- to Fa0/1, Fa0/2, and Fa0/3 only
- to Fa0/1, Fa0/2, Fa0/3, and Fa0/4
- to Fa0/1, Fa0/2, and Fa0/4 only
Explanation: When a switch receives a broadcast frame, such as a DHCP Discover request, it follows a specific forwarding rule: it floods the frame out of all available ports in the same VLAN except for the port where the frame entered the switch (the ingress port). In this star topology, PC3 sends the request through port Fa0/4; therefore, SW1 will forward that broadcast to all other active ports, which are Fa0/1 (the DHCP Server), Fa0/2 (PC1), and Fa0/3 (PC2). Although the restoration of power means the switch is undergoing the STP convergence process, the logic for broadcast forwarding remains defined by the exclusion of the source port.
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