Question

1. A process is a program in execution. A program is a passive entity, whereas a process in an active entity. A process go through a life-cycle. In UNIX/Linux, we use fork() and exec() semantics to capture the high level understanding of the internals of a process. Given all the facts above, draw a typical process state diagram.

Answer 1

The diagram represents the life cycle of a process.

The fork() function is used to create a process. It creates a duplicate of calling process.

Creating a process is not instantaneous. That is in the init state, it is not yet ready to run.

As soon as the process is fully created, it is ready to run.

When the process enters into runnable state, Scheduler puts it in a queue and wait for the currently executing processes being executed.