II$.$ Consider a disk shown with a sector size of $1024$ bytes, $1,000$ tracks per surface, $96$ sectors per track, $4$ single$-$sided platters and a block size of $2,048$ bytes. Suppose that a file containing $400,000$ records of $120$ bytes each is to be stored on such a disk and that no record is allowed to span two blocks.

$[6$ Marks$]$

a$)$ How many records fit onto a single track?

b$)$ How many sectors are required to store the entire file? If the file is arranged sequentially $($contiguously$-$ according to the 'next block concept'$)$ on disk, how many cylinders are needed?

c$)$ How many records of $120$ bytes each can be stored using this disk?