Exam 156-215.81.20 topic 1 question 162 discussion

Stateful Inspection provides several advantages, including: 1. Enhanced Security: By tracking the state of active connections and making decisions based on the state and context of the traffic, Stateful Inspection offers more robust security compared to simple packet filtering. 2. Efficiency: It allows for more efficient processing of packets by maintaining a state table and only inspecting packets that are part of a new connection or that deviate from the expected state. 3. Application Layer Awareness: Stateful Inspection can inspect traffic at higher layers of the OSI model, including the application layer, to enforce more granular security policies. However, the statement "No Screening above Network Layer" is not an advantage of Stateful Inspection. In fact, one of the key benefits of Stateful Inspection is its ability to inspect traffic at higher layers, including the application layer, which provides more comprehensive security.

The correct answer is B. No Screening above Network Layer. Stateful Inspection does provide screening above the network layer, which is one of its key advantages. It tracks the state of active connections and makes decisions based on the context of the traffic, providing good security and transparency. However, it may not always offer the highest performance compared to other methods like packet filtering.

B is correct