Explanation:
Cache memory temporarily stores data and instructions for quick access during computation. ROM is permanent, hard disk and optical discs are secondary storage.
Explanation:
Under decimal SI metrics (often used by storage manufacturers), mega- means exactly one million ($10^6$), so 1 Megabyte equals exactly 1,000,000 Bytes.
Explanation:
SSDs have much faster random access times because there is no mechanical latency (seek time, rotational latency). They are also more resistant to shock and quieter.
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