CPIM Practice Exam

What scheduling method uses the earliest operation due date for job completion?

1. Earliest job due date (EDD)

2. Shortest process time (SPT)

3. Earliest operation due date (ODD)

4. First come, first served (FCFS)

The correct answer is: Earliest operation due date (ODD)

The scheduling method that focuses on the earliest operation due date is indeed the one referred to as "Earliest Operation Due Date (ODD)." This method emphasizes the importance of completing jobs as soon as their scheduled due dates approach, prioritizing those operations that are closest to their deadlines. The goal is to minimize tardiness and ensure that jobs are completed before their designated due times, which is especially beneficial in environments where timely delivery is critical. In contrast, while the other methods are valid scheduling approaches, they do not prioritize jobs based on their operation due dates in the same way. For example, the earliest job due date (EDD) method sorts jobs based on their overall due date rather than focusing on individual operations within those jobs. Shortest process time (SPT) prioritizes jobs based on the duration of the job itself, regardless of due dates, to minimize overall completion time. First come, first served (FCFS) processes jobs in the order they arrive, without consideration for due dates or completion times. Therefore, the key distinction with the Earliest Operation Due Date method lies in its specific focus on ensuring that each operational step of a job is completed as early as possible based on its due date, making it particularly effective in managing operations where timing