Difference between Buffer and Spooler, Paging and Segmentation, 

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Difference between Buffer and Spooler

Both buffer and spoolers are used for storing data temporary. The main difference between buffer and spooler is that buffer is used for short term and spoolers are used for long term. Buffer is small and limited while spooler are large capacity to store the data as compare to buffer. For buffer it is necessary to be on line i.e. it is direct communication with computer, on the other hand spool may be either online or offline.

Difference between paging and segmentation:-

Paging and segmentation are closed relative to each other but they have following difference.

1. Paging divides the virtual memory in physical memory areas while the segmentation divides it logically.

2. Paging divides the memory in fixed length memory areas while segmentation divides into variable length memory areas.

3. In segmentation a full logical portion of the process in loaded, but in paging information about page is loaded.

4. The segments are large length as compare to page.

5. In segmentation memory is divided into segments through software and in paging the memory in divided through hardware.