An administrator is implementing a new management system for the machinery on the company’s production line. One requirement is that the system only be
accessible while within the production facility. Which of the following will be the MOST effective solution in limiting access based on this requirement?
A.
Access control list
B.
Firewall policy
C.
Air Gap
D.
MAC filter
A
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C is correct. Air gapping is a security measure that involves isolating a computer or network and preventing it from establishing an external connection. For example, an air gapped computer is one that is physically segregated and incapable of connecting wirelessly or physically with other computers or network devices.
Air-gapped networks are used to protect many types of critical systems, including those that support the stock market, the military, the government and industrial power industries.
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