单项选择题
A. Run the CHKDSK utility
B. Run the disk defragmenter utility
C. Increase the capacity on the system volume
D. Convert to a dynamic drive on the system
单项选择题 A laser printer keeps displaying, ‘Paper Jam – Front Door’. It does not matter which tray or paper type the printer is using. Which of the following is the MOST likely reason why the printer is having this issue?（）
单项选择题 A virus has been removed from the user’s machine, but the user still cannot access the Internet.Which of the following should the technician check NEXT?（）
单项选择题 A technician is attempting to configure Windows XP Media Center on a desktop from a CD. The message that comes up on the screen says ‘Missing NTLDR press any key to reboot’. Which of the following should the technician do NEXT?（）