Question: Four processes execute on a system with a single CPU and a single I / O device. The system uses multiprogramming without time - sharing.

Four processes execute on a system with a single CPU and a single I/O device. The system uses multiprogramming without time-sharing. Each process has a compute-bound phase of 30 time units followed by an I/O-bound phase of 60 units. A process cannot initiate the I/O phase until the I/O device becomes free.

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