Discussion
If CPU and I/O interface share a common bus than transfer of data between two units is known as ?
Answer: C
Correct answer: Synchronous
When the CPU and the interface share a common bus they are driven by the same clock, so the transfer needs no separate timing agreement between them - that is what makes it synchronous. Asynchronous transfer is used precisely when the two units have independent clocks and must signal each other with control lines.
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