单项选择题
A.Cisco 3825 B.Cisco 2851 C.Cisco 3845 D.Cisco 2811 E.Cisco 2821 F.Cisco 2801
A.Type of Security scheme that is being implemented B.Maximum number of supported IP Phones C.Maximum Amount of packet latency acceptable D.Type of QoS scheme that is being used
A.Phone+Desktop B.Desktop C.Switch D.Router E.Trunk