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? ()

多项选择题 Which three of these are benefits of telepresence and video collaboration?（）