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Suppose that a disk drive has 200 cylinders, numbered from 0 to 199. The drive is currently serving a request at cylinder 60 and the queue of pending requests is: 86, 159, 39, 139, 35, 71, 65, and 14. Starting from current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all pending requests for each of the following disk-scheduling algorithms? Show clearly all the steps. 1B. i. FCFS ii. SSTF iii. LOOK

Suppose that a disk drive has 200 cylinders, numbered from 0 to 199. The drive is currently serving a request at cylinder 60 and the queue of pending requests is: 86, 159, 39, 139, 35, 71, 65, and 14. Starting from current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all pending requests for each of the following disk-scheduling algorithms? Show clearly all the steps. 1B. i. FCFS ii. SSTF iii. LOOK

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1B. Suppose that a disk drive has 200 cylinders, numbered from 0 to 199. The drive is currently serving a request at cylinder 60 and the queue of pending requests is: 86, 159, 39, 139, 35, 71, 65, and 14. Starting from current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all pending requests for each of the following disk-scheduling algorithms? Show clearly all the steps. i. FCFS ii. SSTF iii. LOOK
Transcribed Image Text:1B. Suppose that a disk drive has 200 cylinders, numbered from 0 to 199. The drive is currently serving a request at cylinder 60 and the queue of pending requests is: 86, 159, 39, 139, 35, 71, 65, and 14. Starting from current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all pending requests for each of the following disk-scheduling algorithms? Show clearly all the steps. i. FCFS ii. SSTF iii. LOOK
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