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

A. QoS
B. call setup and teardown
C. call routing
D. call supervision
E. audio signal compression


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1.單項(xiàng)選擇題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

2.單項(xiàng)選擇題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

5.單項(xiàng)選擇題

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

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