Where is the PCB stored? (Exercise 3.1) Describe the differences among short-term, medium-term, and long-term scheduling. (Exercise 3.2) Describe the actions taken by a kernel to context-switch between processes. (Exercise 3.4) Explain the role of the init process on UNIX and Linux systems in regards to process termination. (Exercise 3.5) Including the initial parent process, how many processes are created by the program shown below? (Assume that there is no error running this program.) \begin{tabular}{l} \#include stdio. h \#include unistd. h int main() \\ int i; \\ for (i=0;i