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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What does "default" mean?
A) It means whatever settings the last user specified. B) It means the option that is chosen if nothing else is specified. C) It refers to the settings you specify for your documents each time you open one. D) This word does not apply in the context of settings.
Which of the following statements about creating arrays and initializing their elements is false?
a) The new keyword should be used to create an array. b) When an array is created, the number of elements must be placed in square brackets following the type of element being stored. c) The elements of an array of integers have a value of null before they are initialized. d) A for loop is an excellent way to initialize the elements of an array.