Which of the following are functions that are often provided by an ITSP but are not typically  provided by the PSTN？（）

单项选择题WhichofthefollowingisnotinformationprovidedfromanIPphonetoaCatalystswitchusingCDP？（）

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

单项选择题WhichofthefollowingwillgenerateanRSTPtopologychangenotification？（）

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WhichofthefollowingHSRProuterstatesdoesanactiverouterenterwhenitispreemptedbyahigherpriorityrouter？（）

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.

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