Political Science · India's Foreign Policy
Which of the following statements is correct about a firewall?
AIt is a device installed at the boundary of a company to prevent unauthorized physical access
BIt is a device installed at the boundary of a network to protect it against unauthorized access ✓ Correct
CIt is a kind of wall built to prevent files from damaging the corporate network
DNone of the above
Correct answer: (B) It is a device installed at the boundary of a network to protect it against unauthorized access — A firewall guards a network's boundary against unauthorized access, so the answer is that option.
Explanation
★A firewall guards a network's boundary against unauthorized access, so the answer is that option.
★It sits between a private network and the outside internet.
★It monitors and filters incoming and outgoing traffic.
★It blocks unauthorized or harmful connections.
★It is a security barrier, not a physical access control.
★So a firewall protects a network against unauthorized access.
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