1. Suppose that we have a multi-programmed computer in which each job has identical characteristics. In one computation period, T for each job, half the time is spent in I/O and the other half in processor activity. Each job runs for a total of N periods. Assume that a simple round-robin scheduling is used, and that I/O operations can overlap with processor operations. Given the definitions below: a. Turnaround time = actual time to complete a job b. Throughput = average number of jobs completed per time period T c. Processor Utilization = percentage of time that the processor is active (not waiting) Compute these quantities for one, two, and four simultaneous jobs, assuming that the period T is distributed in each of the following ways: a) I/O first half, processor is second half - 3pts] b) I/O is first and fourth quarter, processor is second and third quarters - [3pts]