21.In a computer, most processing takes place in a component called the central processing unit (CPU), which is sometimes described as the computer’s “brain.” ( )
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69.Referring to the figure below, the is serving the purpose of linking two or more nodes of the network. ( )
A. Cable, DSL, or satellite modem for Internet access
B. router
C. file server
D. printer
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53.A ____ screen can detect the location of a fingertip or stylus within the screen area. ( )
A. touch-based
B. touch-sensitive
C. sound-sensitive
D. sound-based
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91.Circuitry for Ethernet or Wi-Fi networking is incorporated into the ____ of most personal computers. ( )
A. ROM
B. modem
C. motherboard
D. RAM
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43.The system unit contains storage devices, a power supply, and the computer’s main circuit board, called a ____. ( )
A. any of the above
B. motherboard
C. mainboard
D. system board
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23.Animated ____ are essentially a series of bitmap images displayed in sequence to achieve animation effects. ( )
A. BIFs
B. BITs
C. GITs
D. GIFs
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48.Some printers are capable of printing on both sides of the paper, a feature referred to as ____ printing. ( )
A. high efficiency
B. double
C. multiplex
D. duplex
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109.Installed on the original IBM PCs, ____ used a command-line interface that simply displayed a “prompt” such as C:\ on the screen and waited for users to type commands. ( )
A. Unix
B. Linux
C. DOS
D. HTML
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62.Originally designed to accept input from devices called ____, mainframes today are typically accessed by desktop computers. ( )
A. pods
B. LCDs
C. ports
D. terminals
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93.Most antivirus software runs ____. ( )
A. on scheduled dates
B. only when you choose to run it
C. continuously whenever your computer is turned on
D. continuously even if your computer is turned off
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