Q1. What is a process? Give an example.
A process is a program in execution.
A process is an instance of a program running in a computer.
Example =
when you want to search something on web then you start a browser. So, this can be
process. Another example of process can be starting your music player to listen to some cool
music of your choice.
Q2. Explain in brief about the different states of the processes.
New State: This is the state when the process is just created. It is the first state of a process.
Ready State: After the creation of the process, when the process is ready for its execution then it
goes in the ready state. In a ready state, the process is ready for its execution by the CPU but it is
waiting for its turn to come. There can be more than one process in the ready state.
Running State: Amongst the process present in the ready state, the CPU chooses one process
amongst them by using some CPU scheduling algorithm. The process will now be executed by the
CPU and it is in the running state.
Waiting: During the execution of the process, the process might require some I/O operation like
writing on file or some more priority process might come. In these situations, the running process will
have to go into the waiting or blocked state and the other process will come for its execution. So, the
process is waiting for something in the waiting state.
Terminated State: After the complete execution of the process, the process comes into the
terminated state and the information related to this process is deleted.
Q3. Differences between;
a) Process creation v/s Process Termination
Process creation
Parent process creates children process, which, in turn create other processes, forming a tree of
processes.
Resource sharing options
Parent and children share all resources.
Children share subset of parent’s resources.
Parent and child share no resources.
