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Consider a job scheduling problem with 4 jobs J1, J2, J3, J4 and with corresponding deadlines: ( d1, d2, d3, d4) = (4, 2, 4, 2). Which of the following is not a feasible schedule without violating any job schedule?Group of answer choicesJ4, J2, J1, J3J2, J4, J1, J3J4, J2, J3, J1J4, J1, J2, J3

Question

Consider a job scheduling problem with 4 jobs J1, J2, J3, J4 and with corresponding deadlines: ( d1, d2, d3, d4) = (4, 2, 4, 2). Which of the following is not a feasible schedule without violating any job schedule?Group of answer choicesJ4, J2, J1, J3J2, J4, J1, J3J4, J2, J3, J1J4, J1, J2, J3

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Solution

The job scheduling problem is a classic problem in computer science and operations research. The goal is to find a schedule for a set of jobs, each with a deadline, such that no job is scheduled after its deadline.

In this problem, we have 4 jobs J1, J2, J3, J4 with deadlines d1=4, d2=2, d3=4, d4=2 respectively.

Let's analyze each schedule:

  1. J4, J2, J1, J3: At the time of scheduling J1, the time would be 3 (since J4 and J2 have been scheduled before). But J1 has a deadline of 4, so it can be scheduled. Similarly, J3 can also be scheduled at time 4. So, this is a feasible schedule.

  2. J2, J4, J1, J3: At the time of scheduling J1, the time would be 3 (since J2 and J4 have been scheduled before). But J1 has a deadline of 4, so it can be scheduled. Similarly, J3 can also be scheduled at time 4. So, this is a feasible schedule.

  3. J4, J2, J3, J1: At the time of scheduling J1, the time would

This problem has been solved

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