SCADA systems controlling critical infrastructure are usually completely separated from the Internet by which of the following?
A) firewall
B) air gap
C) router
D) Vlan

Question

Quizplus · Accepted Answer

An air gap is the most secure and reliable method of isolating a SCADA system from the Internet. It physically disconnects the SCADA system from any external networks, including the Internet, preventing any unauthorized access or tampering from outside the system. Firewalls, routers, and VLANs can all be bypassed or breached, making them less secure options for protecting critical infrastructure.

SCADA Systems Controlling Critical Infrastructure Are Usually Completely Separated from the Internet