1) Network layer firewall works as a a) Content filter b) Frame filter c) Packet filter d) worm filter 2) Which of the following type of firewall performs creates a checkpoint at a router level? a) Personal b) Packet-filtering c) Stateful d) Stateless 3) A personal firewall is a software application that protects internet users from potential hackers. a) True b) False 4) A perimeter firewall is the main defence across an entire network. a) True b) False 5) A proxy firewall operates at which layer? a) Physical layer b) Data link layer c) Network Layer d) Application layer 6) A packet-filtering firewall operates at which layer? a) Physical layer b) Data link layer c) Network Layer d) Application layer

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