Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy?
A.Time-sharing
B.Spooling
C.Preemptive scheduling
D.Multiprogramming
Answer:D
Which technique was introduced because a single job could not keep both the CPU and the I/O devices busy?
A.Time-sharing B.Spooling C.Preemptive scheduling D.Multiprogramming