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CISA® Certified Information Systems Auditor®: Study Guide, Third Edition by David Cannon

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Selecting the Best System

In this section, you will look at various computer operating systems, as well as how to determine the best computer for you. In addition, you will compare some of their capabilities and look at supervisory versus problem states. Finally, you will look at data storage and port controls more closely.

Identifying Various Operating Systems

Every computer uses some sort of operating system (OS) to control the hardware. Each make and model of computer hardware is slightly different. For example, the processor type might be different, or the computer might use a specialized disk drive subsystem.

Computer programs of the 1950s and 1960s were not as portable as they are today. The old computers required the programmer to write ...

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