Three ways to improve the performance of a hard disk include _______.
A. disk caching, RAID, and file expansion
B. file compression, disk caching, and file encryption
C. disk caching, RAID, and file compression
D. RAID, file compression, and disk expansion
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Which of these is not an example of solid state storage?
A. Digital versatile disc
B. SSDs
C. Flash memory cards
D. USB drives
Smartphones use which of these storage technologies?
A. Optical drive
B. Digital versatile disc
C. Flash memory card
D. Flash drive
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
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