Give a non-computer example of pre-emptive and non-pre-emptive scheduling.

         Consider   any system where people use some kind of resources and compete for them.

                        The non-computer examples for preemptive scheduling the traffic on the single lane road if there is emergency or there is an ambulance on the road the other vehicles give path to the vehicles that are in need. The example for preemptive scheduling is people standing in queue for tickets.