Designing Cisco Enterprise Networks (ENSLD) — Question 117

An engineer must design a QoS solution for a customer. The network currently supports data only, but the customer will roll out VoIP and IP video in conjunction with the new QoS solution. The engineer plans to use DiffServ. To ensure priority for voice services, which model must the design include?

Answer options

• A. 8-class model
• B. 4-class model
• C. 6-class model
• D. 12-class model

Correct answer: A

Explanation

The 8-class model is capable of providing the necessary prioritization for voice traffic, which is critical for ensuring quality in VoIP services. The other models (4-class, 6-class, and 12-class) do not offer the same level of classification and prioritization specifically required for managing voice and video traffic effectively.