Question

difference between R/W and ROM​

Answer 1

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DVD RW (DVD Re-Writable) is a format of DVD. ... DVD ROM (Digital versatile disc-read only memory) is a read-only digital versatile disc (DVD) commonly used for storing large software applications. A DVD-ROM permanently stores data files which cannot be changed, written over or erased.

Answer 2

Explanation:

Rom is a primary memory where as R/W is a secondary memory