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Under virtual storage,

  • A.a single program is processed by two or more CPUs
  • B.two or more programs are stored concurrently in primary storage
  • C.only the active pages of a program are stored in primary storage
  • D.interprogram interference may occur

Answer: C

Correct answer: only the active pages of a program are stored in primary storage

Virtual storage keeps only the pages a program is currently using in main memory and leaves the rest on disk, fetching each as it is referenced. A program can therefore be larger than the memory available, and the memory can be shared among more programs than would otherwise fit.

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