Which of the following is true in the context of $\frac{1}{O}$ control and timing requirements?

All timings in a computing system are bounded within a clock cycle boundary.

CPU is the sole entity involved in all I$/$O operations in a computing system.

A communication clock based on the network time takes care of timing in I$/$O $.$

There is a need for controlling the transfer of data between external devices and internal system components. The I$/$O module takes care of this on a computer.