CheckPoint® CCSA™ (CheckPoint Certified Security Administrator)

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Q1. Which of the following Firewall technology works at the Network Layer of ISO/OSI model?

A. Application Layer Gateways

B. Authentication Servers

C. Encryption Servers

D. Packet Filters

Correct Answer: D

Explanation:

1. The Packet Filters work at Network Layer of ISO/OSI stack.
2. The Application Layer Gateways work at the Application Layer of ISO/OSI stack.
3. A Firewall implemented with stateful technology (like Checkpoint Firewall-1) works at all layers of IS/OSI model.

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