A certain moving arm disk storage with one head has following specifications : Number of tracks I recording surface 100 Disk rotation speed 2400 rpm Track storage capacity= 62500 bits
The transfer rate will be
A. | 2.5 Mbits/s |
B. | 4.25 Mbits/s |
C. | 1.5Mbits/s |
D. | 3.75Mbits/s |
Option: A Explanation :
In 25 ms, one rotation is completed and all the 62500 bits are transferred. So in 1ms, 2500 bits are transferred. Accordingly, in 1s, 2.5Mb are transferred. Thats why the speed is 2.5Mb/s Mb-Mega bits.
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