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Page
A page is a fixed-length contiguous block of memory. It is a unit of memory management used by an operating system to store data for a program. The size of a page is typically determined by the underlying hardware architecture, but can be configured by the operating system.
Page Table
A page table is a data structure used by a virtual memory system to store the mapping between virtual memory addresses used by a program and physical memory addresses used by a computer's memory. The page table is used to translate virtual memory addresses to physical memory addresses, allowing the computer's memory to be used more efficiently by allowing multiple programs to share the same physical memory.