FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -Real-time operating systems (RTOS) are used in environments where a large number of events, mostly external to the computer system, must be accepted and processed in a short time or within certain deadlines.

Detailed explanation-2: -For the real time operating system, which of the following is the most suitable scheduling scheme? Explanation: Pre-emptive scheduling is the most suitable scheduling scheme for real time operating systems as it can always preempt other processes based on priority.

Detailed explanation-3: -RTOSes are designed to handle multiple processes at one time, ensuring that these processes respond to events within a predictable time limit. Processing in an RTOS occurs within defined time constraints and monitors the priority of tasks. An RTOS is also able to make changes to task priority.

Detailed explanation-4: -In real-time systems the response time of a task or thread is defined as the time elapsed between the dispatch (time when task is ready to execute) to the time when it finishes its job (one dispatch).