Certified Network Defender (CND) — Question 151

Leslie, the network administrator of Livewire Technologies, has been recommending multilayer inspection firewalls to deploy the company’s infrastructure. What layers of the TCP/IP model can it protect?

Answer options

• A. IP, application, and network interface
• B. Network interface, TCP, and IP
• C. Application, TCP, and IP
• D. Application, IP, and network interface

Correct answer: D

Explanation

The correct answer is D, as multilayer inspection firewalls provide protection at the application, IP, and network interface layers of the TCP/IP model. Options A, B, and C include layers that are not fully compatible with the primary capabilities of multilayer inspection firewalls, such as the TCP layer, which is not specifically protected in this context.