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(c) Given that it takes 1 ms to travel from one track to the next, and that the arm is originally positioned at track 15
(c) Given that it takes 1 ms to travel from one track to the next, and that the arm is originally positioned at track 15 moving toward the low-numbered tracks and you are using the SCAN scheduling policy, compute how long it will take to satisfy the following requests-4, 40, 35, 11, 16, 45 and 7. All requests are present in the wait queue. (Ignore rotational time and transfer time; just consider seek time.) Will it perform better if SSTF scheduling policy is used? Diberikan masa 1 ms untuk bergerak dari satu trek ke trek yang berikutnya, dan lengan berada pada kedudukan asalnya di trek 15 bergerak ke arah trek yang bernombor rendah dan anda menggunakan polisi penjadualan SCAN, kira berapa lama ia akan mengambil masa untuk memenuhi permintaan berikut-4, 40, 35, 11, 16, 45 dan 7. Semua permintaan hadir dalam giliran menunggu. (Abaikan masa putaran dan masa pemindahan; hanya pertimbangkan masa carian.) Adakah ia akan mengerjakan tugas dengan prestasi yang lebih baik jika polisi penjadualan SSTF digunakan? (11/100)
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