Implementing Cisco Network Security (IINS, legacy) — Question 100

Which type of firewall can perform deep packet inspection?

Answer options

• A. application firewall
• B. stateless firewall
• C. packet-filtering firewall
• D. personal firewall

Correct answer: A

Explanation

The application firewall is designed to inspect the data within packets, allowing it to perform deep packet inspection for threats. In contrast, a stateless firewall does not track the state of active connections and only looks at packet headers. A packet-filtering firewall examines only header information, while a personal firewall typically protects individual devices without the same level of inspection capabilities.