Question

The interval from the time of submission of a process to the time of completion is the

• A. Throughput
• B. Turnaround time
• C. Waiting time
• D. Response time

Hint:

Remember the key time definitions: Turnaround Time (Total time in system), Waiting Time (Time in ready queue), and Response Time (Time until first response).

Answer 1

The Correct Option is B

Let's define the key time metrics used in process scheduling:
(A) Throughput: The number of processes completed per unit of time.
(B) Turnaround Time: The total time a process spends in the system. It is the interval from the time of submission (arrival) to the time of completion. It includes execution time, I/O time, and all waiting times. Turnaround Time = Completion Time - Arrival Time.
(C) Waiting Time: The total amount of time a process spends waiting in the ready queue, waiting for the CPU.
(D) Response Time: The time from the submission of a request until the first response is produced. It's the time it takes to start responding, not the time it takes to complete.
The definition given in the question perfectly matches the definition of Turnaround Time.