Discussion
Processor having Clock cycle of 0.25ns will have clock rate of
Answer: C
Correct answer: 4GHz
Clock rate is the reciprocal of the clock cycle time:
\[ \text{Clock rate}=\frac{1}{0.25\times10^{-9}\ \text{s}}=4\times10^{9}\ \text{Hz}=4\ \text{GHz} \]
A 0.5 ns cycle would give 2 GHz and a 0.125 ns cycle 8 GHz, which is what the other options correspond to.
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