单项选择题 The "1000" in 1000BaseT cabling represents which of the following?（）

单项选择题 Which of the following wireless technologies can operate at only 5GHz?（）

单项选择题 An administrator has added a new access point to the network to provide additional coverage. A heat-map survey shows coverage now extends beyond company property and is interfering with other wireless networks in the area. How should the administrator modify the new installation to stop the interference?（）