26. In inkjet printers, what is the most common problem with the paper tray?

A. inconsistent printing
B. malfunctioning pick-up rollers
C. misalignment of the sheet feeder
D. paper jamming on the ink cartridge
E. None of the above

27. A customer calls and says her computer won’t boot, she can hear noises and can see lights on the box, but nothing comes up on the screen, what should you take to the site to fix the problem?

A. hard drive
B. video card
C. power cable
D. power supply
E. None of the above

28. The DC voltage on most circuit boards is:

A. -12 volts
B. 0 volts
C. +5 volts
D. +12 volts
E. None of the above

29. On a dot-matrix printer, regular lube maintenance should be followed, but this component should never be lubed:

A. Platten bearings
B. Carriage rails
C. Printhead
D. Paper advance bearings
E. None of the above

30. The buffers statement is found in what file?

A. Config.sys
B. Autoexec.ncf
C. Autoexec.bat
D. Neb.cfg
E. None of the above