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  • Paging is one of the memory management schemes by which a computer stores and retrieves data from the secondary storage for use in main memory.
  • In the paging memory-management scheme, the operating system retrieves data from secondary storage in same-size blocks called pages.
  • Paging allows the physical address space of the process to be non contiguous.
  • Paging is to deal with external fragmentation problem. This is to allow the logical address space of a process to be non-contiguous, which makes the process to be allocated physical memory.
  • Logical address space of a process can be non-contiguous; process is allocated physical memory.

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