多项选择题
Which of the following wireless standards can be used to avoid the 2.4GHz range?（） (Select TWO).
A.802.11g B.802.1X C.802.11b D.802.1n E.802.11a
单项选择题 Which of the following services can an administrator use to reduce latency and prioritize the flowof data?（）
单项选择题 Which of the following technologies was designed to provide the FASTEST data rates over analog phone lines?（）
单项选择题 Which of the following protocols defaults to port 161?（）
