Memory / Resource Management

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4 Terms

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Why memory location isn’t moved in RAM

Relocating a program requires updating all memory addresses, which is time-consuming and can cause fragmentation, so operating systems usually avoid moving running programs.

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Paging

Paging splits a program into fixed-size pages, which can be loaded into any free memory frames, avoiding fragmentation.

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Segmentation

Segmentation splits a program into logical segments, which can be loaded into scattered blocks memory, making efficient use of RAM.

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Virtual Memory

Uses secondary storage to hold parts of programs when RAM is full, allowing larger programs to run and giving the appearance of more memory.