In $1965,$ the mainframe computer truly came into its own with the introduction of the IBM $360$ series. The $360$ was the first commercial computer that could provide time sharing, multitasking, and virtual memory in more advanced models.

Which of the following stages of IT infrastructure evolution was a period of highly centralized computing under the control of professional programmers and system operators?

ANSWER

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Cloud and mobile computing era

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Personal computer era

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Enterprise computing era

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Mainframe era