单项选择题 Which IP telephony component provides call processing, such as signaling, that in a traditional voice network is provided by switching equipment, such as a PBX?（）

单项选择题 Which network technology allows for the monitoring of active communication networks to diagnose problems and gather statistics for network administration?（）

多项选择题 As a TestKing instructor you are giving a lecture on the historical context of Cisco. You point out that a computer scientist started the Cisco Corporation. One of the attendants asks you when and where Cisco was founded. What should you respond? ()