单项选择题 Within a 64-bit Windows desktop OS, by default where are the program files for 32-bit programs located?（）

单项选择题 A user’s workstation currently has four connected IDE devices. Which of the following could be added to the workstation to allow more ATA devices to be added to the workstation?（）

单项选择题 A user states that the wireless on their laptop was working when they where at home, however,now in the office no wireless connection can be made. Which of the following should the technician check FIRST?（）