Part D. For questions 7,8,9, consider a queuing system with one queue and two servers in series. Question 7. Consider a queuing system with one queue and two servers in series. How many statements are correct? 0123 (A) Johnson's rule is a priority rule for a single queue and single server. (B) The concept of Johnson's rule is the jobs with the smallest time on the first server is scheduled early in the schedule and the jobs with the smallest time on the second server is scheduled late in the schedule. (C) For the Johnson's rule, the total processing time is minimized in the schedule. Question 8. Consider the iobs to be scheduled on two servers. What is the Johnson's rule schedule in the order of (1st,2nd,3rd,4th,5th) ? (A) (A,C,D,B,E) (C) (D,B,A,C,E) (E) (D,E,B,C,A) (G) (E,B,D,C,A) (B) (A,C,E,D,B) (D) (D,B,E,C,A)(F)(A,B,C,D,E)(H)(E,D,C,B,A) Question 9. Consider the iobs to be scheduled on two servers. Consider the schedule (A,B,C,D,E) in the order ( 1nt,2nd,3rd,4th). How many statements are correct? 0123 (A) The queue time of Job A is 11 . (B) The processing time of Job D is 29 . (C) The flow time of Job A is 0