GICSP: Global Industrial Cyber Security Professional CertificationDemo

By GIAC · Question Mode

QuestionQ67

ICS Components & Architecture

Which of the following devices is most likely located at the same level as an HMI workstation that interfaces with a PLC?

  • A Variable speed drive
  • B Programmable logic controller
  • C Data historian
  • D Remote terminal unit
Explanation

An HMI workstation and a data historian are supervisory/SCADA components: the HMI presents process status to operators, while the historian records process data for trending and analysis. PLCs and RTUs perform basic control, and variable-speed drives operate closer to the controlled equipment.

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