ITPEC FE Morning April 2019 Question 17
ITPEC FE Morning April 2019 — Question 17 of 80
Spooling — transferring data to a high-speed auxiliary storage device before sending it to a low-speed output device.
Spooling (Simultaneous Peripheral Operations On-Line) buffers output data on a fast disk so the CPU doesn't wait for slow devices like printers.
- •Main memory → fast disk (spool) → slow output device
- •The CPU continues processing while the device reads from the spool at its own pace
- •Classic example: print queue
Why not others:
- (a) Blocking — grouping small records into a single physical block for efficient I/O
- (b) Paging — dividing virtual memory into fixed-size pages for memory management
- (d) Swapping — moving an entire process between main memory and disk
Key phrase: "low-speed output device via high-speed auxiliary storage" = spooling.
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