单项选择题 Which of the following technologies is responsible for communication with the CPU?（）

多项选择题 Which of the following cable types can transmit at 100 Mbps and has the SAME transmissiondistance without the use of a repeater?（）

单项选择题 A technician has installed a new motherboard in a workstation, but after hardware tests, themotherboard has failed. Which of the following should the technician do FIRST before replacingthe motherboard? （）