Memory frame
A frame is a fixed-size block of physical memory used in a paging system. When a process requests memory, its virtual address space is divided into pages of the same size, and the operating system maps these pages to available frames in physical memory. The MMU handles this mapping using a page table. Since frames and pages are of equal size, paging avoids external fragmentation, though it may introduce internal fragmentation if a page does not fully utilize a frame.