processes are required to exist until all child processes terminate successfully. What could possibly be the reason(s) for this OS policy? (8pts) 5] Processes are elements of program execution through which user service needs are Since several hundreds of both user and system processes could be active in a computer system at any time, briefly discuss the ways and means by which the OS can manage all of these processes, keeping in mind the following characteristics: a) process state changes, b) CPU scheduling, c) process information sharing/communi narrative/discussion, and don't simply define or describe them. Your answer should be a brief narrative that weaves these characteristics together] (12pts) ation, d) the Process Control Block (PCB). [Use these 4 characteristics to develop a [6] Would an asynchronous send operation lead to a high-level or low-level of concurrency? Justify your choice and indicate the reliability issue(s), if any, that need be taken care of by the OS-kernel to make the asynchronous send-receive operation is successful. [Think hard before writing, and be brief?) (10pts)