Question 19 An example of a no server system would be: ATM transactions Bank eller transactions Parts being serviced Repair to house services Question 20 Computer programs are sent to a server of the university to be executed. The programs arrive at the server with a rate of 10 per minute. The average execution time of each program is 5 seconds and both the times between arrivals and the execution times are distributed exponentially What proportion of the time is the server idle? 17% of the time 20% of the time 22% of the time 25% of the time