单项选择题

Which of the following is not information provided from an IP phone to a Catalyst switch using CDP？（）

A. device PoE requirements
B. device IP address
C. device voice VLAN ID
D. device platform

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单项选择题

Which of the following will generate an RSTP topology change notification？（）

A. an edge port that transitions to the forwarding state
B. a non-edge port that transitions to the blocking state
C. a non-edge port that transitions to the forwarding state
D. an edge port that transitions to the blocking state
E. any port that transitions to the blocking state
F. any port that transitions to the forwarding state

单项选择题

Which of the following HSRP router states does an active router enter when it is preempted by a higher priority router？（）

A. active
B. speak
C. learn
D. listen
E. init
F. standby

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？（）

A. VLAN 32 is not allowed on the trunk port.
B. VLAN 32 is not active on the switch.
C. Traffic from VLAN 32 is not being sent over the trunk port.
D. Traffic from VLAN 32 is not restricted to only the trunk ports that require it.