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Previous Year Question (PYQs)

Consider a disk pack with $32$ surfaces, $64$ tracks and $512$ sectors per track. $256$ 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:




Solution

Number of surfaces is

$32=2^5$

So, surface number needs $5$ bits.

Number of tracks is

$64=2^6$

So, track number needs $6$ bits.

Number of sectors is

$512=2^9$

So, sector number needs $9$ bits.

Therefore, total bits required are

$5+6+9=20$


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