Texts: A, Priority=100, MAC=0000.1111.2222
B, Priority=32768, MAC=0000.2222.3333
C, Priority=32768, MAC=0000.6666.7777
D, Priority=200, MAC=0000.4444.5555
E, Priority=32768, MAC=0000.8888.9999
Q2: Choose the root ports and designated ports in this example. All edges have 1Gbps speed at cost=4. In case of choosing a blocking port, write down the reason.