多项选择题
A. Use a trusted aggressive pop-up blocker.
B. Update the anti-spyware software after scanning the system.
C. Re-install the operating system every six months.
D. Avoid notorious websites and hyperlinks.
E. Open and then scan all attachments in emails.
单项选择题 A user reports that a newly installed external CD-RW is not working. Jill, a technician, is called and notes the user has the CD-RW drive, a flash disk, a rarely used external hard drive and a wireless network adapter plugged into an external USB hub. Which of the following is the MOST likely reason for the problem?（）
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?（）