多项选择题 What are two appropriate uses for Internet Protocol TV broadcasting (IP/TV) technology? （）

多项选择题 As a Pass Guide 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? （）

单项选择题 Which benefit does digital subscriber line (DSL) systems for broadband access provide to the user?（）