CISSP Practice question #224

What are Programmable Logic Controllers (PLCs) used for?
A: Computerized control system for a process or plant.
B: Controlling manufacturing processes.
C: Monitor our servers, workstations and network devices.
D: High level control supervisory management.

CBK 3: Security Engineering
Source: practice tests –


B: PLC (Programmable Logic Controllers) are industrial computer that have been hardened, ruggedized and customized.  They are used to control manufacturing processes, that could be assembly lines,  or any activity that requires high reliability control, ease of programming and process fault diagnosis.

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