Round Robin Schedule: Pre-emptive Version of FIFO

Round Robin Schedule:
Round Robin is a CPU scheduling algorithm in which each process is assigned a fixed time slice or time quantum in a cyclic way. The time quantum is the maximum amount of time a process can run. Once the time quantum expires, the CPU pre-empts the process and switches to the next process in the queue.

Pre-emptive Version of FIFO:
First-In-First-Out (FIFO) is a non-preemptive scheduling algorithm in which the process that arrives first is executed first. In this algorithm, the process that is executed first is the one that has been waiting in the queue the longest.

Round Robin scheduling is essentially the pre-emptive version of the FIFO algorithm. In Round Robin scheduling, the process that arrives first is executed for a fixed time slice or quantum, and then the CPU pre-empts the process and switches to the next process in the queue. This process continues until all the processes have been executed.

Advantages of Round Robin Scheduling:
- It is fair and ensures that no process is waiting for too long.
- It is easy to implement and understand.
- It provides better response time for interactive processes.

Disadvantages of Round Robin Scheduling:
- It may lead to an increase in context switching overheads.
- It may cause some processes to starve if they have a higher time quantum than other processes.

In conclusion, Round Robin scheduling is a pre-emptive version of the FIFO algorithm, in which each process is assigned a fixed time slice or quantum in a cyclic way. It is fair, easy to implement, and provides better response time for interactive processes. However, it may lead to an increase in context switching overheads and cause some processes to starve.