按照Cisco公司的VLAN中继协议(VTP)，当交换机处于______模式时可以改变VLAN配置，并把配置信息分发到管理域中的所有交换机。

Administrative mode: trunk
Operational Mode: trunk
Administrative Trunking Encapsulation: dotlq
Operational Trunking Encapsulation: dotlq
egotiation of Trunking: disabled
Access Mode VLAN: 0((inactive))
Trunking Native Mode VLAN: 1(default)
Trunking VLANs Enabled: all
Trunking VLANs active: 1, 2
Pruning VLANs Enabled: 2-1001
Priority for untagged frames: 0
Override vlan tag priority: FALSE
Voice VLAN: none
在这个例子中，端口fa0/1的链路模式被设置为______状态，默认的vlan是______。

A．Switch＞
B．Switch#
C．Switch (config)
D．Switch (config-if) #