OS - Memory Management

The principal operation of memory management is to bring processes into main memory for execution by the processor.

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A physical address is the location of a word relative to the beginning of the program and the processor translates that into a logical address.

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The best-fit algorithm is usually the worst performer.

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All segments of all programs must be of the same length.

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Segmentation does not eliminate internal fragmentation.

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The task of subdividing memory to accommodate multiple processes is carried out dynamically by the operating system and is known as (a)   .

A (a)   is a variable length block of data that resides in secondary memory.

In a practice known as (a)   , the program and data are organized in such a way that various modules can be assigned the same region of memory with a main program

responsible for switching the modules in and out as needed.

A fixed length block of data that resides in secondary memory is a (a)   .

A (a)   is a fixed length block of main memory.