单项选择题

In a typical PDA， which of the following is the primary input tool？（）

A.voice navigation
B.stylus
C.scroll wheel
D.keyboard

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单项选择题

Which of the following modes conserves the most battery power while allowing retrieval of the computing session at a later time？（）

A.Hibernate
B.Suspend
C.Standby
D.Shutdown

单项选择题

If an external monitor is attached to a laptop and it does not work， which of the following actions should a technician take FIRST？（）

A.Re-install the operating system.
B.Open and close the cover.
C.Use the function key to activate the monitor.
D.Install new software for the keyboard.

单项选择题

After booting up a new computer， a technician observes that the USB ports are not working with any USB devices. Which of the following should be done FIRST？（）

A.Check the computer to verify that the jumper settings for USB are correct.
B.Connect the USB devices to a different computer to test the devices.
C.Buy new USB wires and test USB functionality.
D.Check the BIOS to verify that USB functionality is enabled.