Designing Cisco Enterprise Networks (ENSLD) — Question 104

An engineer must propose a QoS architecture model that allows an application to inform the network of its traffic profile and to request a particular type of service to support its bandwidth and delay requirements. The application requires consistent and dedicated bandwidth end to end. Which QoS architecture model meets these requirements?

Answer options

Correct answer: D

Explanation

The correct answer is IntServ, as it is designed to provide guaranteed bandwidth and low latency for applications by reserving resources along the path. In contrast, DiffServ offers a more scalable approach through traffic classification rather than strict guarantees, LLQ prioritizes specific traffic but does not ensure end-to-end bandwidth, and WRED is primarily used for congestion management rather than for guaranteeing service levels.