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Q. |
Which of the following is NOT a type of firewall? |
A. | Packet filtering firewall |
B. | Circuit-level gateway |
C. | Stateful inspection firewall |
D. | Data encryption |
Answer» D. Data encryption | |
Explanation: Data encryption is a method of protecting data, not a type of firewall. Firewalls can be implemented through various technologies like packet filtering, circuit-level gateways, etc. |
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