File protection one of the major function of file system is to protect this information against unauthorized
File System is a part of operation system responsible for controlling secondary storage space
File is a logical collection of information stored on secondary storage such as hard disk
Scheduling is the mechanism of arranging requests in order to save unnecessary rotations by disk
Disk is a secondary storage device that is used to store data.
File management is the process of storing, controlling and managing data stored on disk or secondary storage in the form of file
Page replacement algorithm is the logic or the policy regarding how to select a page to be swapped out from the main memory
Demand paging is a technique used to implement the concept of virtual memory.
Virtual memory is a technique of executing program, instruction that may not fit entirely in the system memory
Paging is memory management scheme in which the physical memory allocated to a process is non-contiguous