Smartphones use which of these storage technologies?
A. Optical drive
B. Digital versatile disc
C. Flash memory card
D. Flash drive
查看答案
Optical discs use these to represent data.
Analog signals
B. Magnetic charges
C. Pits and lands
D. Laser beams
A CD-RW disc _______.
A. can be written to only once
B. can be erased and rewritten
C. cannot be written on
D. cannot be erased
All of the following are true of DVD-ROM drives except:
A. They are also known as erasable optical discs.
B. They can provide over two hours of high-quality video and sound comparable to that found in motion picture theatres.
C. They are a type of optical disc.
DVD-ROM stands for "digital versatile disc-read only memory.”
The large capacity, high-definition optical discs designed to store hi-def video and video games are _______.
A. DVD-RAM
B. HD DVD
C. Blu-ray
D. HD CD
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