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nata0808 [166]
3 years ago
14

Suppose that a disk drive has 5,000 cylinders, numbered 0 to 4,999. The drive is currently serving a request at cylinder 2,050,

and the previous request was at cylinder 2,215. The queue of pending requests, in FIFO order, is: 4040, 606, 3795, 374, 3036, 1065, 434, 2567, 2950, 3540 Starting from the current head position, what is the total distance (in cylinders) that the disk arm moves to satisfy all the pending requests for each of the following disk-scheduling algorithms? a. FCFS b. SSTF c. SCAN

Computers and Technology
1 answer:
cluponka [151]3 years ago
7 0

Answer:

a. 18102

b. 5656

c. 6090

Explanation:

Pleaae kindly check attachment for the detailed and step by step solution of the given problem.

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Answer:

The definition including its given problem is outlined in the following segment on the clarification.

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4 0
3 years ago
A power ratio of 9000000:1 corresponds to ... dB?
sertanlavr [38]

Answer:

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Explanation:

A power ratio of 9000000:1 corresponds to 69.54 dB.

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Formula for calculating Power ratio (db) = 10 * log [P(out)/P(in)]

Since the given ratio is 9000000:1, substituting in the formula gives us 10 * log (9000000/1)

Note that log 9000000 = 6.954

Therefore, 10 * log (9000000/1) = 69.54

Hence the required power ratio in db is 69.54 db.

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