Four jobs to be executed on a single processor system arrive at time 0 in the order A, B, C, D. Their burst CPU time requirements are 4, 1, 8, 1 time units respectively. The completion time of A under round robin scheduling with time slice of one time unit is
- A. 10
- B. 4
- C. 8
- D. 9
Answer: D. 9
Explanation: Sequence: A(1), B(2), C(3), D(4), A(5), C(6), A(7), C(8), A(9). Job A finishes at time 9.