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OS Memory Allocation Q & A #1
Question: What are the differences between paging and segmentation?
Answer: Following are the differences between paging and segmentation.
| Sr. No. | Paging | Segmentation |
|---|---|---|
| 1 | A page is a physical unit of information. | A segment is a logical unit of information. |
| 2 | A page is invisible to the user's program. | A segment is visible to the user's program. |
| 3 | A page is of fixed size e.g. 4Kbytes. | A segment is of varying size. |
| 4 | The page size is determined by the machine architecture. | A segment size is determined by the user. |
| 5 | Fragmentation may occur. | Segmentation eliminates fragmentation. |
| 6 | Page frames on main memory are required. | No frames are required. |
os_exams_questions_answers.htm
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