Multiple choice

Overlay concept is used to execute programmes whose size is ________________.

  1. larger than main memory

  2. same as main memory

  3. shorter than main memory

  4. overlay has nothing to do with memory

  5. none of the above
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A Correct answer
Explanation

Overlay concept uses the free blocks of the main memory during run time to execute some portion of a program. So, when a larger size program is required to be executed, it is first fragmented in smaller continuous programmes, and those programmes are loaded and removed in/from memory as and when required.

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