Multiple choice

Overlay is

  1. a part of an operating system

  2. a single contiguous memory used for running long program by swapping

  3. overloading the system with many user files

  4. a single memory location
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Overlay allows running large programs that exceed available memory by swapping program parts in and out of the same memory region. Only the currently executing portion needs to be in memory at any time. This extends effective memory without requiring physical RAM for the entire program.

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