Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of data are stored in a bit serial manner in a sector. The number of bits required to specify a particular sector in the disk is
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Correct answer: C. 20
Explanation
Reading 512 as sectors per track: 32 surfaces (5 bits) + 64 tracks (6 bits) + 512 sectors (9 bits) = 20 bits.
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