Question: 10 EKT 333) SECTIONB SEKSYEN B) Answer only ONE (1) question from this section (Jawab hanya SATU () soalan daripodo selayn) QUESTION S (Soalan 5)

 10 EKT 333) SECTIONB SEKSYEN B) Answer only ONE (1) question

10 EKT 333) SECTIONB SEKSYEN B) Answer only ONE (1) question from this section (Jawab hanya SATU () soalan daripodo selayn) QUESTION S (Soalan 5) (C2, CO2, ???, PO2) a) Explain the concept to improve OS supported I/O performance using a rather than a single buffer VO. (Terangkan konsep daripada menggunakan penampan tunggal To) p untuk menirgkakan prestasi lO yang disokong oleh 0% mengpunaban pena d (5 Marks/Markah) (C4, CO2 , CO3, P02) b) Consider a disk drive with 4,000 tracks, numbered from 0 to 3,999. The request queue has the following composition: Pertimbangkan satu pemacu cakera dengan 4000 trek bernombor dari D hirgga 3999 Permintaan beratur itu mempurnyai komposisi berikut) 1045 750 932 878 1365 1330 1245 664 1678 1897 Assume that the disk head is initially positioned over track 1370 and is moving in the direction of increasing track number. Compute the average seek distance (in the disk drive) that the disk head moves for each of the SSTF and C-SCAN scheduling algorithm (Andaikan kepala cakera pada mularya pada kedudukan ke atas landasan 1370 dan bergerak ke arah menambah bilangan trek K rakan jarak purata carian (di dalam pemacu cakera) kepala cakera bergerak untuk setiap SSTF dan C-SCAN algoritma penjadualan) (12 Marks/Mar tah) (26, CO2, ???, POIl) c) For Question 5 (b), the disk drive about 80% of all requests are small fixed number from the starting track. Which of the scheduling algorithm is recommended for this situation? Justify your choice. (Untuk soalan 5 (b), cakera memandu kira-kira 80% daripada semua permintaan adalah umlah tetap kecil daripada trek permulaan Yang mana sahukah antura algoritma penjadualan tersebut disyorkn untuk keadaan ini? Wajarkan pilihan anda.) (3 Marks/Markh SULIT

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