SG0-001 · Question #410
A disk cylinder refers to which of the following?
The correct answer is A. A vertically aligned track on all disk surfaces within a hard drive.. A disk cylinder describes the set of all tracks that are at the same radial position on every platter surface within a hard drive.
Question
A disk cylinder refers to which of the following?
Options
- AA vertically aligned track on all disk surfaces within a hard drive.
- BA vertically aligned sector on all disk surfaces within a hard drive.
- CThe shaft that runs through the center of each disk surface within a hard drive.
- DThe area within the hard drive that encloses all disk platters within the hard drive.
How the community answered
(25 responses)- A92% (23)
- B4% (1)
- C4% (1)
Why each option
A disk cylinder describes the set of all tracks that are at the same radial position on every platter surface within a hard drive.
A disk cylinder consists of all tracks that are located at the same radial distance from the center of the spindle on all the magnetic platters of a hard drive. This forms a vertical 'cylinder' of data storage across all disk surfaces.
A sector is a subdivision of a track, and while sectors are vertically aligned within a cylinder's tracks, a cylinder itself describes the collection of tracks, not sectors.
The shaft running through the center is the spindle, which rotates the platters, and is not referred to as a disk cylinder.
This describes the hard drive enclosure or casing, not a specific data organization concept like a cylinder.
Concept tested: Hard drive physical geometry - cylinder definition
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