Refer to the diagram below. The spanning-tree protocol is enabled in all switches. All switched ports are 100 Mbps. Answer the following questions. 7 Bridge Priority: 4096 MAC: CC-CC-CC-CC-CC-CC Switch3 10 Switch4 Bridge Priority: 8192 MAC: DD-DD-DD-DD-DD-DD 4 3 Bridge Priority: 32768 MAC: AA-AA-AA-AA-AA-AA Bridge Priority: 32768 MAC: BB-BB-BB-BB-BB-BB Switch1 Switch2 PC1 PC2 When the spanning-tree topology has stabilized, . What are the roles of the switches? The root bridge is: The non-root bridges are: What are the roles and the states of the ports in the switches? The root ports are: The designated ports are: The non-designated ports are: The forwarding ports are: The blocking ports are: What path is used for sending a frame from PCI to PC2