A water treatment plant uses an air-gapped control network. To update the PLC firmware, an engineer brings a USB drive from the corporate network and plugs it into a control system workstation. What is the primary risk of this action?

The engineer will need to configure a firewall to allow the USB drive to work.

The firmware update will be slower than a network-based update.

The USB drive may be physically damaged and fail to work.

The USB drive could carry malware that infects the control network.

EC-CouncilICS/SCADA Cybersecurity

Domain 7Objective 1

Advantages and Disadvantages of Air Gap Bridging ICSSCADA Practice Questions (Page 8)

Part of the Bridging the Air Gap domain, which makes up ~8% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~4–6 in this domain), expect 1–2 from this objective — we provide 36 practice questions to prepare you well beyond it. (estimate)

36questions here

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Questions 36–36

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A water treatment plant uses an air-gapped control network. To update the PLC firmware, an engineer brings a USB drive from the corporate network and plugs it into a control system workstation. What is the primary risk of this action?
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Advantages and Disadvantages of Air Gap Bridging ICSSCADA Practice Questions (Page 8)

Questions 36–36

A water treatment plant uses an air-gapped control network. To update the PLC firmware, an engineer brings a USB drive from the corporate network and plugs it into a control system workstation. What is the primary risk of this action?

Keep studying — Bridging the Air Gap