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The statement that holds true regarding firewall is

  • A.It can either be hardware or software device.
  • B.It filters network traffic
  • C.It follows a set of rules
  • D.All of the above

Answer: D

Correct answer: All of the above

All three are true of a firewall: it may be implemented in hardware or in software, it examines the traffic crossing a boundary, and what it does with each packet is decided by a configured set of rules.

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