Question

is used to reduce the waiting time of CPU for information.​

Answer 1

Scheduling is used to reduce the waiting time of CPU for information.

• Cumulative time variance between the total turn around time and total burst time is waiting time.
• The input - output time and processor time comprise a part of standard operation. In a programming method, time typically spent waiting for input - output is promptly lost and during this specific time the central unit is idle.  
• One active activity can employ the central unit in a multi programming system, whereas the second system typically waits for an input - output. This is only achievable with method of scheduling.