单项选择题

Which of the following should the technician do FIRST when replacing a motherboard?（）

A. Use a benchmarking tool
B. Use anti-static wrist band
C. Remove the CPU
D. Remove the power supply

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单项选择题

A technician is checking on a printer that is frequently jamming. The jams always consist ofmultiple papers becoming stuck. The paper in the printer was just reloaded this morning. Which of the following is the MOST likely reason for the jams?（）

A. The drum is old and needs to be replaced.
B. The fuser is not coming up to the proper temperature.
C. The paper tray rollers are too tight.
D. The paper is damp due to humidity.

单项选择题

A user requires more storage space on their computer. After a technician installs a second IDE drive in the computer, the system will not recognize that there are any hard drives installed. Which of the following is the MOST likely cause of the problem?（）

A. The second hard drive has not been formatted for NTFS.
B. The jumpers on both drives are set to the cable select position.
C. The jumper on the first drive is set to master and the second is set to slave.
D. The jumpers on both drives are set to the master position.

单项选择题

Which of the following wireless technologies is backward compatible to receive all bands ofwireless communications?（）

A.802.11a
B.802.11b
C.802.11g
D.802.11n