Operating System is a program that acts as an intermediary between a user of a computer and the computer hardware

1. DISCUSS the goals of the operating system.

2. LIST the types of system calls provided by an operating system .Explain how each provides convenience to the users.

The main objective of multiprogramming is to have some process running at all times in order to maximize CPU utilization. The assignment of physical processors to processes allows processors to accomplish work. The problem of determining when processors should be assigned and to which process is called CPU Scheduling.

1. EXPLAIN in details about the First Come First Serve ( FCFS),Shortest remaining Time First Scheduling algorithm . 
2. DIFFERENTIATE between long term scheduler and short term scheduler?