Introducing Cisco Data Center Networking (DCICN) — Question 26

Which network device is used to identify and protect against unauthorized traffic and control access to legitimate business-critical data?

Answer options

• A. Stateful firewall
• B. Stateless firewall
• C. Router
• D. Gateway
• E. Switch

Correct answer: A

Explanation

A Stateful firewall is designed to monitor the state of active connections and make decisions based on the context of the traffic, thus effectively identifying and preventing unauthorized access. In contrast, a Stateless firewall filters packets without regard to the state of the connection, while Routers, Gateways, and Switches serve different networking functions that do not specifically focus on traffic protection and access control.