ITPEC IP April 2026 Question 18
ITPEC IP April 2026 — Question 18 of 100
Multitasking — the OS alternates CPU time among multiple applications so they make progress concurrently.
The scheduler gives each runnable program a short time slice and switches rapidly between them. This allows a spreadsheet to respond while a download continues, even on a single processor. The execution is interleaved rather than necessarily simultaneous.
Answer (d)
Why not others:
- (a) Virtual reality — creates an immersive simulated environment and is unrelated to OS scheduling
- (b) Dual core — is a hardware arrangement with two processor cores, not the OS function described
- (c) Dual system — is not the standard term for alternating among application programs
Key rule: Multitasking is an OS scheduling function; multiple cores can improve it, but time slicing lets it work on a single CPU.
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