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Computer Basic Information

Computer Basic Information
Which of the following is the coding of data so that is can't be easily understood if intercepted.

Barcode
Encryption
Mnemonics
Decoder
None of these

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Computer Basic Information
Which is not necessary when using bar codes in supermarkets?

Price on the shelf
Point-of sale (POS) terminal
None of these
Check digit on the bar code
Price on the goods

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Computer Basic Information
Which of the following memories must be refreshed many times per second?

Dynamic RAM
EPROM
ROM
Static RAM
None of these

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Computer Basic Information
Which of the following refers to the memory in your computer ?

LAN
USB
DSL
RAM

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Computer Basic Information
What device includes an adapter that decodes data sent in radio signals?

None of these
Router
Switch
Modem
Digital Translator

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Computer Basic Information
What process prepares the magnetic surface of a disk by creating concentric circles, called tracks, around the disk? (Each track is further divided into pic-shaped sections called sectors.)

Tracking
Copying
Formatting
Sectioning
None of these

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