312-49 · Question #505
The surface of a hard disk consists of several concentric rings known as tracks; each of these tracks has smaller partitions called disk blocks. What is the size of each block?
The correct answer is B. 512 bytes. A disk block (also called a sector) is the smallest addressable unit of storage on a hard disk. The traditional and standard size of a disk sector/block is 512 bytes. This has been the industry standard since the early days of hard disk design. Modern drives may use 4096-byte…
Question
The surface of a hard disk consists of several concentric rings known as tracks; each of these tracks has smaller partitions called disk blocks. What is the size of each block?
Options
- A512 bits
- B512 bytes
- C256 bits
- D256 bytes
How the community answered
(31 responses)- A3% (1)
- B90% (28)
- C6% (2)
Explanation
A disk block (also called a sector) is the smallest addressable unit of storage on a hard disk. The traditional and standard size of a disk sector/block is 512 bytes. This has been the industry standard since the early days of hard disk design. Modern drives may use 4096-byte (4K) sectors (Advanced Format), but 512 bytes remains the classic and exam-expected answer. Note the distinction: the unit is bytes, not bits - 512 bits would be only 64 bytes, which is far too small.
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