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Chapter 1 · HardwarePractice
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CONCEPT PRACTICE

Original weighted cache access-time example

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2025 Spring · Subject A · Q10

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System A: cache 14 ns, main memory 80 ns. System B: cache 12 ns, main memory 90 ns. Both have the same effective access time and hit ratio. Find the approximate hit ratio.

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Source: 2025S_FE-A_Questions.pdf, PDF page 8. ID: 2025S-A-Q010. Explanation written for this textbook.

Original question · Q10
System A: cache 14 ns, main memory 80 ns. System B: cache 12 ns, main memory 90 ns. Both have the same effective access time and hit ratio. Find the approximate hit ratio.

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