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GATE CS 2022 : Computer Organization Quiz-8
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Question 1
Which of the following techniques is used by Magnetic disks for searching?
Question 2
In hard disk's, the surface gets scratched and data is destroyed when there is a:
Question 3
A hard disk has 128 sectors/ track, 20 platters, each with 2 recording surface and 1000 cylinders. The address of a sector is given as <c,h,s> where
c → cylinder number
h → surface number
s → sector number
0th sector is addressed as <0, 0, 0>.
The address <800, 15, 94> corresponds to sector number is ?
c → cylinder number
h → surface number
s → sector number
0th sector is addressed as <0, 0, 0>.
The address <800, 15, 94> corresponds to sector number is ?
Question 4
If a disk spins at 10,000 rpm (revolution per minute). If a given track on the disk has 1024 sectors, what is the transfer time (in μsec) for a sector?
Question 5
If a disk spins at 10,000 rpm (revolution per minute). If a given track on the disk has 1024 sectors, what is the transfer time (in μsec) for a sector?
Question 6
Consider a system which uses hard disk for storage. The task of managing hard disk comes under operating system. It is very important to keep track of occupancy of the hard disk i.e., which block is empty or which block is already occupied. A particular disk unit uses a bit string to record the vacancy and occupancy of its tracks, with 0 denoting vacant and 1 denoting occupied. A 32 bit segment of this string has hexadecimal value 72DF1240 . The percentage of empty track for the corresponding part of the disk, to the nearest percentage is _______ (upto two decimal places)
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