Which of the following statements regarding industrial control systems (ICSs) is NOT true?
a. They encompass several types of control systems used in industrial production.
b. ICS sensors typically have digital or analog I/O and are in a form that can be easily communicated over long distances.
c. They should be securely segregated from other networks as a security layer.
d. Physical access to them must be strictly controlled.
B ICS sensors typically have digital or analog I/O and are not in a form that can be easily communicated over long distances. The statement as given did not include the word not. All of the other statements regarding ICSs are true.
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