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The two kinds of main memory are:

  • A.Primary and secondary
  • B.Random and sequential
  • C.ROM and RAM
  • D.All of above

Answer: C

Correct answer: ROM and RAM

Main (primary) memory is of two kinds: RAM, which is read-write and volatile, and ROM, which is read-only and keeps its contents without power - where the start-up firmware lives. “Primary and secondary” describes main memory against disk, which is a different division altogether.

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