Sim-Ex™ Practice Exams for CCSA NG 156-210 : Sample Questions

FireWall - Stateful Inspection

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Q1. Which of the following Firewall technologies is considered most secure and flexible?

A. Packet Filters

B. Stateful Inspection

C. Application Layer Gateways

D. Authentication Servers

Correct Answer: B


A firewall implemented with stateful inspection technology has several advantages over packet filter. As seen below, stateful inspection technology makes use of all communication information, communication derived state, application derived state, and also able to manipulate information.

Packet Filters Application Layer Gateway Stateful Inspection
Communication Information Partial usage Partial usage Yes
Communication Derived State No Partial usage Yes
Application Derived State No Yes Yes
Information Manipulation No Yes Yes

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