单项选择题

Which of the following printers would be the BEST choice for printing on multi-part forms?（）

A. Impact printer
B. Thermal printer
C. Inkjet printer
D. Laser printer

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A technician needs to assign a default subnet mask for a class B network to a network device that was just installed. Which of the following would the technician use?（）

A. 224.0.0.1
B. 255.0.0.0
C. 255.255.0.0
D. 255.255.255.0

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Which of the following describes the 25 or 9 pin connector with male pins on the back of a laptop computer?（）

A. Parallel port
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A technician notices that there is a second partition on the primary hard drive. This partitionis notassigned a drive letter and is not accessible from Windows. Which of the following is the MOST likely explanation for this extra partition?（）

A. Space reserved by the drive manufacturer for firmware.
B. Space set aside by Windows for use by the virtual memory swap file.
C. A potentially dangerous virus has been downloaded onto the system.
D. A recovery partition put there by the manufacturer.