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In the ______________ layer of OSI model, packet filtering firewalls are implemented. (a) Application layer (b) Session layer (c) Presentation layer (d) Network layer I got this question in homework. Enquiry is from Firewalls topic in portion Cyber Security of Cyber Security Select the correct answer from above options Cyber Security questions and answers, Cyber Security questions pdf, Cyber Security question bank, Cyber Security questions and answers pdf, mcq on Cyber Security pdf,

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Correct answer is (d) Network layer Explanation: In the network layer, which is the third layer of the OSI (Open Systems Interconnection) model, packet filtering firewalls are implemented.

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