单项选择题
A. Power cycle the printer
B. Print a test page
C. Remove all the paper trays and restart the printer
D. Remove and replace the roller
单项选择题 A workstation no longer has network connectivity. Upon visual inspection, all connectors andsettings seem to be properly configured. Which of the following tools should the technician use to troubleshoot this issue? （）
多项选择题 Which of the following will allow Karen, a technician, to determine if the correct voltages are reaching the computer components? (Select TWO).（）
单项选择题 A technician has replaced a video card with another manufacturer’s video card. The driverinstallation does not complete. Which of the following steps should the technician take FIRST?（）