ITPEC IP April 2023 Question 12
ITPEC IP April 2023 — Question 12 of 100
A multi-core processor aims to improve total throughput by executing different work simultaneously on separate cores. Each core can run its own instruction stream, so independent processes or parallel parts of one program may make progress at the same time. Actual gains depend on software parallelism, scheduling, memory access, and other bottlenecks.
Answer (a)
Why not others:
- (b) repeating identical processing for comparison is redundancy, not the ordinary purpose of multiple cores
- (c) the OS and applications must support scheduling and effective use of multiple cores
- (d) performance also depends on clock rate, architecture, workload, cache, memory, and software, not only core count
Key rule: More cores create parallel execution capacity, but speedup is limited by the portion of work that can run in parallel and by shared resources.
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