Neco 2025 Data Processing Question 20

Practice objective / multiple choice question 20 from the 2025 Neco Data Processing examination.

Neco 2025 Data Processing Objective / Multiple Choice Medium Difficulty

Question 20 NECO • 2025 • DATA_PROCESSING • objective

A computer system uses a three‑level memory hierarchy. Access times and hit ratios are:\n- Cache: 5 ns, hit ratio 0.60\n- Main memory: 70 ns, hit ratio 0.30 of the accesses that miss in cache\n- Secondary storage: 5 ms (5,000,000 ns), accessed only when both cache and main memory miss.\nCalculate the average memory access time (in nanoseconds) for this hierarchy.

A. 500,024 ns

Correct Answer B. 1,400,033 ns

C. 1,400,013 ns

D. 1,400,012 ns

Correct Answer

Correct Option:

1,400,033 ns

This is Neco 2025 Data Processing Question 20. It is one of the objective questions from the 2025 Neco Data Processing examination.

Difficulty level: Medium .

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows

Chat with Support