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(a) Discuss, with the help of a diagram, why a hierarchical structure is used for system architecture of I/O devices. (b) Suppose that a disk queue with requests for I/O to blocks on cylinders 60, 156, 32, 183, 124, 42. The SCAN scheduling algorithm is used. The head is initially at cylinder number 100 moving towards smaller cylinder numbers on its servicing pass. The cylinders are numbered from 0 to 199. Finfd the total head movement.

(a) Discuss, with the help of a diagram, why a hierarchical structure is used for system architecture of I/O devices. (b) Suppose that a disk queue with requests for I/O to blocks on cylinders 60, 156, 32, 183, 124, 42. The SCAN scheduling algorithm is used. The head is initially at cylinder number 100 moving towards smaller cylinder numbers on its servicing pass. The cylinders are numbered from 0 to 199. Finfd the total head movement.

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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Question 3 (a) Discuss, with the help of a diagram, why a hierarchical structure is used for system architecture of I/O devices. (b) Suppose that a disk queue with requests for I/O to blocks on cylinders 60, 156, 32, 183, 124, 42. The SCAN scheduling algorithm is used. The head is initially at cylinder number 100 moving towards smaller cylinder numbers on its servicing pass. The cylinders are numbered from 0 to 199. Finfd the total head movement.
Transcribed Image Text:Question 3 (a) Discuss, with the help of a diagram, why a hierarchical structure is used for system architecture of I/O devices. (b) Suppose that a disk queue with requests for I/O to blocks on cylinders 60, 156, 32, 183, 124, 42. The SCAN scheduling algorithm is used. The head is initially at cylinder number 100 moving towards smaller cylinder numbers on its servicing pass. The cylinders are numbered from 0 to 199. Finfd the total head movement.
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