单项选择题
A. Device is disabled
B. Device conflict
C. No device driver found
D. Device has not been digitally signed
单项选择题 Which of the following features can be identically configured on a wireless access point and in the wireless network OS settings?（）
单项选择题 Which of the following commands shows a graphical display of the drive or paths directorystructure?（）
单项选择题 When replacing a laptop keyboard, the FIRST thing that Bob, a technician, should do is remove:（）