Computer Terminology

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Which one of these file extensions does not represent a sound file?
wav
au
mid
ra
css

Which one of these file extensions does not represent a video file?
mpeg
avi
mov
rmp
rm

Which one of these is not a computer language?
XML
C++
C#
JavaCode
HTML

Which one of these is not a type of computer memory?
cache
RAM
CDRAM
ROM
SDRAM

Which one of these does not a data storage device?
CD
floppy disk
hard drive
Zip disk
Tape disk

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