98.Wireless signals can be disrupted by . ( )
A. interference from electrical appliances
B. hills, valleys, trees
C. brick walls and concrete floors
D. all of the above
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144._gather,format,and present information in the database, and can typically be printed, published on the
Web,or e-mailed to other people.
A. Forms
B. Links
C. Reports
D. Queries
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25.The control unit directs microprocessor tasks. ( )
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2.Digital audio is music, speech, and other sounds represented in format for use in digital devices. ( )
A. analog
B. both a. and b.
C. neither a. nor b.
D. binary
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127. A proprietary version of MP3,designated as ,is used for iTunes music.( )
A. MP4
B. M4P
C. PM4
D. P4M
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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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34.The Marketing Department Secretary inquired about the difference in transfer rates between a DVD drive versus a Blu-ray drive. A 1X DVD drive can access 10.8 Mbps; a 1X Blu-ray drive handles Mbps. ( )
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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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54.A(n) computer program forms the software that sets up a computer to do a specific task.
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22.Input can be supplied by a person, by the environment, or by another computer. ( )
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