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Q. A CPU scheduling algorithm determined an order for the execution of its scheduled processes. Convinced n processes to be scheduled on one processor how numerous possible different schedules are there? Provide a formula in terms of n.
Answer: n! (n factorial = n × n - 1 × n - 2 × ... × 2 × 1).
Suppose we have 3 processes running at the same time as shown in the following table. Each resource only has one instance. Show a possible scenario of resource allocation that r
Process States A total of nine states are acknowledged by the UNIX system. They are like as follow: User running Executing
Q. Describe the concept of transaction atomicity? Answer: A transaction is a sequence of read as well as writes operations upon some data followed by a commit operation. If the
The term IPC (Inter-Process Communication) defines several paths by which different process executing on some operating system interact between each other.
why we say " OS is a resource allocator" and “OS is a control program"?
Synchronization can be achieved by means other than locks and condition variables. One alternative is semaphores. A semaphore is used to regulate traf?c in a critical section. A se
What is the main advantage of the layered approach to system design? As in all cases of modular design, designing an operating system in a modular way has several benefits. Th
Q. What are the three main activities of an operating system in regard to secondary-storage management? Answer: 1) Free-space management 2) Storage allocation 3) Disk
what is an operating system?
Q. What are the three major purposes of an operating system? Answer: To offers an environment for a computer user to execute programs on computer hardware in a conveni
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