OS Memory Allocation Q & A #1
Question: What are the differences between paging and segmentation?
Answer: Following are the differences between paging and 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.|