单项选择题 WhichofthefollowingwillgenerateanRSTPtopologychangenotification？（）

单项选择题 WhichofthefollowingHSRProuterstatesdoesanactiverouterenterwhenitispreemptedbyahigherpriorityrouter？（）

单项选择题 You administer the network shown above. You issue the show interfaces trunk command on  SwitchA and receive the following output：   SwitchA#show interfaces trunk   Port Mode Encapsulation Status Native vlan   Fa0/1 desirable -n802.1q trunking 1   Port Vlans allowed on trunk  Fa0/1 1-4094   Port Vlans allowed and active in management domain   Fa0/1 1-9，31-37   Port Vlans in spanning tree forwarding state and not pruned   Fa0/1 1-9，31，33-37   Which of the following statements is true regarding VLAN 32？（）