题目内容

Which of the following printer features enables you to print on both sides of a sheet of paper?

A. Simplex
B. Duplex
C. Resolution
Dual Matrix

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Printers connected to the Internet that provide printing services to others on the Internet are called _______.

A. dot-matrix printers
B. thermal printers
C. plotters
D. cloud printers

The most widely used audio-output devices.

A. Microphones
B. Speakers and headphones
Cloud printers
D. Faxes

Which of the following allows the transmission of voice and often video communication over the Internet?

A. Faxing
B. Cell phones
C. PDAs
D. Voice over IP

_______ are used on smartphones and other small portable devices.

A. Mouse pointers
B. Ethernet ports
C. Virtual keyboards
D. Game controllers