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The question given below: concern a disk with a sector size of $512$ bytes, $2000$ tracks per surface, $50$ sectors per track, five double-sided platters, and average seek time of $10$ milliseconds.

Given below are two statements:

Statement $I$: The disk has a total number of $2000$ cylinders.

Statement $II$: $51200$ bytes is not a valid block size for the disk.

In the light of the above statements, choose the correct answer from the options given below:

  1. Both Statement $I$ and Statement $II$ are true
  2. Both Statement $I$ and Statement $II$ are false
  3. Statement $I$ is correct but Statement $II$ is false
  4. Statement $I$ is incorrect but Statement $II$ is true
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Number of cylinders = Number of tracks on each surface, so I is true

Block size is always a multiple of sector size which is $512B$ for ex, $1024B, 1536B, 2048B$ are valid block size

But $51200B$ is not a valid block size, because

if we calculate size of sector= $50*512= 25600B$ and block size cannot exceed size of sector, so II is false

Hence Option C) is correct

Answer:

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