What are the four distinct reasons when new processes might be created?

1 reasons for creating multiple processes is 1- If in an application there are various independent major operations, we can create multiple processes for these tasks, a perfect example of this is operating system When you issue the execve or fork syscalls a new process is created. (spawning an application is eseentialy fork + execve) Processes are also created by the kernel scheduler for various internal tasks :P