ITPEC FE Morning April 2018 Question 13
Source exam: ITPEC FE Morning April 2018Topic: Computer Systems & Hardware
ITPEC FE Morning April 2018 — Question 13 of 80
Striping (RAID 0) — splitting sequential data across multiple disks for faster I/O.
Striping divides logically sequential data into blocks and writes them in parallel across multiple hard disks, increasing read/write speed.
- •Disk cache — RAM buffer for frequently accessed disk data; does not involve multiple disks
- •Mirroring — duplicates the same data onto two disks (RAID 1) for redundancy, not speed
- •Swapping — moves memory pages between RAM and disk (virtual memory), unrelated to disk I/O speed
Key rule: Striping = parallel writes across disks = speed. Mirroring = duplicate writes = reliability.
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