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Priority Scheduling is a scheduling algorithm used in operating systems to determine which tasks/processes should be executed first based on their priority level. Each process is assigned a priority value, usually from 1 to 10, with a higher number indicating a higher priority. In Priority Scheduling, the scheduler selects the process with the highest priority for execution. If two or more processes have the same priority, then they are scheduled in a round-robin manner. When a new process arrives in the system, its priority is compared with the priority of the currently running process, and if the new process has a higher priority, it preempts the currently running process and starts executing. To prevent starvation, some variations of Priority Scheduling use aging, which means increasing the priority of a process as it waits in the ready queue for a long time. This ensures that eventually, lower-priority processes will get a chance to run. Different Types of Priority Scheduling Here are some common types of priority scheduling, as following them: Preemptive Priority Scheduling: Preemptive priority scheduling is a variant of process scheduling algorithm that is going to use in operating systems. In this algorithm, each process is assigned a priority level, and the process with the highest priority is given control of the CPU first.