46. The amount of a certain product sold to a certain customer in a past period can be obtained from the

A. customer file
B. sales history file
C. inventory file
D. All of the above
E. None of the above

47. A greater proportion of time is spent in planning on the

A. top management level
B. middle management level
C. lower management level
D. All of the above
E. None of the

48. As alternatives are evaluated, the best one is recognized as the one

A. best enabling the system to meet its objectives
B. representing lowest cost
C. with the most advantages
D. with the least disadvantages
E. None of the above

49. Decisions can be classified on three levels: strategic, _____ and operational.

A. prompt
B. passwords
C. MIS
D. Tactical
E. None of the above

50. Which of the following is not a device used in data communication?

A. modem
B. multiplexer
C. statistical multiplexer
D. front-end processor
E. All of the above