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Showing posts with the label protection

Service of Operating system

SERVICE OF OPERATING SYSTEM:- 1.Input/Output Operation:-                                                                      A running program may require I/O. this I/O may involve a file or an I/O device. For efficiency and protection, users usually cannot control devices directly. Generally, the program that require I/O, specifies only a function the rest of the work is handled by operating system. 2.Works as a Resource Allocator:-                                                                                         When multiple users are logged on the system or multiple jobs ...