单选题 ( ) supervises the activity of each component in a computer system.
An operating system
B. Hardware
C. A queue
D. An application program
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单选题 The earliest operating system, called ( )operating systems, only had to ensure that resources were transferred from one job to the next.
A. batch
B. time-sharing
C. personal
D. Parallel
单选题 ( )operating system is needed for jobs shared between distant connected computers.
A. batch
B. time-sharing
C. parallel
D. distributed
单选题 Multiprogramming requires a ( ) operating system.
A. batch
B. time-sharing
C. parallel
D. distributed
单选题 DOS is considered a ( )operating system.
A. batch
B. time-sharing
C. parallel
D. personal