Operating System Programming and Technical

Q. Define compactions.

A. Compaction is a process in which the free space is collected in a large memory chunk to make some space available for processes.

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Operating System Other Question

Q. Difference between Primary storage and secondary storage?

A. Primary memory is the main memory (Hard disk, RAM) where the operating system resides.
Secondary memory can be external devices like CD, floppy magnetic discs etc. secondary storage
cannot be directly accessed by the CPU and is also external memory storage Q. What are residence monitors?

A. Early operating systems were called residence monitors.