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whats the problem in two state model ?
Define Page stealing Page stealing is taking page frames another working sets
What is the purpose of system calls? System calls permit user-level processes to request services of the operating system.
How can a user program disturb the normal operation of the system? a) Issuing illegal I/O operation. b) By accessing memory locations within the OS itself. c) Refusing to
What are the various process scheduling concepts? a) Scheduling queues with diagram b) Queuing diagram c) Schedulers d) Context switch with diagram
why we say " OS is a resource allocator" and “OS is a control program"?
Define the “turn-around” time of a user job Turn- around time is total time taken to execute the job.
In a multiprogramming and time-sharing environment, several users share the system simultaneously. This situation can result in various security problems. a
Q. How does the distinction among kernel mode and user mode function as a rudimentary form of protection (security) system? Answer: The distinction among kernel mode and user m
What is Multitasking? Multitasking provides power to users by offering them to run multiple applications at once. The applications are loaded into memory and appear to the user
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