I. What is the use of a process table in program execution? II. What is the difference between a process that is ready and a process that is waiting? III. What complications could arise in timesharing/multitasking system if two processes require access to the same file at the same time? Are there cases such request should be granted? Are there cases such request should be denied? I. What are the various functions of the memory manager in an operating system? II. What is meant by an interrupt handler in multiprogramming systems and what is its significance? III. How is the read action different from the write action when multiple processes access the same file