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A developer is working on a project using a Linux tool that enables writing processes to obtain these required results: * If the process is unsuccessful, a negative value is returned. * If the process is successful, 0 value is returned to the child process, and the process ID is sent to the parent process. Which component results from this operation?
Correct Answer: D
There are two tasks with specially distinguished process IDs: swapper or sched has process ID 0 and is responsible for paging, and is actually part of the kernel rather than a normal user-mode process. Process ID 1 is usually the init process primarily responsible for starting and shutting down the system. Originally, process ID 1 was not specifically reserved for init by any technical measures: it simply had this ID as a natural consequence of being the first process invoked by the kernel. More recent Unix systems typically have additional kernel components visible as 'processes', in which case PID 1 is actively reserved for the init process to maintain consistency with older systems