单项选择题
A. The USB hub needs more USB ports.
B. The USB hub is a version 1.1.
C. The USB hub was not externally powered.
D. The USB hub is a version 2.0.
单项选择题 A technician is trying to load a device driver directly from the manufacturer’s CD for a PCI NIC. The operating system is Windows Vista. Windows refuses to accept the driver. Which of the following is the MOST likely cause of this problem?（）
单项选择题 Mike, a technician, is working on a computer and the air is dry. Which of the following choices is the BEST option for Mike to use?（）
单项选择题 The customer brings their mini-tower and a new DVD/RW drive they want installed. The technician finds a second hard drive in an empty 5.25 bay connected to the secondary bus and jumpered as a slave. The ribbon cable will not stretch from the primary hard drive to the open 5.25 inch bay. Which of the following is the BEST solution?（）