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

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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.

单项选择题

You want to configure a switched internetwork with multiple VLANs as shown above.
Which of the following commands should you issue on SwitchA for the port connected to SwitchB？（）

A. switchport mode trunk
B. switchport access vlan 5
C. switchport mode access vlan 5
D. switchport trunk native vlan 5

单项选择题

Refer to the exhibit.

Which of the following should you do to configure the IP phone to override the priority of the data packets it receives from the host？（）

A. Issue the mls qos trust cos command on the switch port connected to the IP phone.
B. Issue the switchport priority extend cos command on the switch port connected to the IP phone.
C. Issue the switchport priority extend cos command on the IP phone.
D. Issue the mls qos trust cos command on the IP phone.