Aug2016 cs Q39

0. Five jobs A, B, C, D and E are waiting in Ready Queue. Their expected runtimes are 9, 6, 3, 5 and x respectively. All jobs entered in Ready queue at time zero. They must run in _____ order to minimize average response time if 3 < x < 5.

Answer
Comment
Array

Option : B
Explanation :
We will solve it by minimizing the avg Waiting Time and Take x = 4 BT = Burst or Execution time CT = completion time P = Process AWT = Average Waiting Time AT = Arrival time WT = Waiting time
We get minimum average waiting time from the sequence given in option (B)

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