In the following timing, $"$ex$","$iy$",$ and $"$oz$"$ represent execution, input,

and output operations of process $"$P$1"$; and $"$Ex$","$Iy$","$Oz$"$ represent execution, input, and

output operations of process $"$P$2".$ With respect to this timing explain:

A$.$ How the advantage of multi$-$tasking in term of CPU utilization is shown?

B$.$ How can we increase the CPU utilization?

$P_1$

$P_2$

CPU

Input

$i_2{I}_2$

Output