2. A network server has 2 processors and processes transactions coming from 6 workstations. The average think time is Z-8 sec, and the average processor service time is S 2 sec. (a) Show the queueing model, the state-transition-rate diagram, and solve the balance equations. Compute the processor utilization, U, and the average response time R. (b) Compute U and R for a system having a single, but two times faster, processor. What is better: (a) or (b), and why? Compare the curves of response time R(n) for (a) and (b). (c) In the case (b) what is the critical number of users n' and what is the response time for n 30? 2. A network server has 2 processors and processes transactions coming from 6 workstations. The average think time is Z-8 sec, and the average processor service time is S 2 sec. (a) Show the queueing model, the state-transition-rate diagram, and solve the balance equations. Compute the processor utilization, U, and the average response time R. (b) Compute U and R for a system having a single, but two times faster, processor. What is better: (a) or (b), and why? Compare the curves of response time R(n) for (a) and (b). (c) In the case (b) what is the critical number of users n' and what is the response time for n 30