Certified Network Defender (CND) — Question 17

Which VPN QoS model guarantees the traffic from one customer edge (CE) to another?

Answer options

• A. Pipe model
• B. Hose model
• C. AAA model
• D. Hub-and-Spoke VPN model

Correct answer: A

Explanation

The Pipe model is designed to guarantee a specific level of bandwidth for traffic between two customer edges, making it the correct choice. The Hose model allows for flexible bandwidth allocation but does not provide guaranteed bandwidth between specific points. The AAA model is focused on authentication, authorization, and accounting, and the Hub-and-Spoke VPN model describes a network topology rather than a QoS model.