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Which of the following statements is correct about the firewall?

  1. It is a device installed at the boundary of a company to prevent unauthorized physical access.
  2. It is a device installed at the boundary of an incorporate to protect it against the unauthorized access.
  3. It is a kind of wall built to prevent files form damaging the corporate.
  4. None of the above.

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Answer: 

It is a device installed at the boundary of an incorporate to protect it against the unauthorized access.

Explanation: A firewall can be the type of either a software or the hardware device that filters each and every data packet coming from the network, internet. It can also be considered as a device installed at the boundary of an incorporate to protect form unauthorized access. Sometimes firewall also refers to the first line of defense against viruses, unauthorized access, malicious software etc.

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