Designing Cisco Enterprise Networks (ENSLD) — Question 196

A customer plans to adopt distributed QoS in their enterprise WAN. The policy must allow for individual packet marking according to the type of treatment required and for forwarding based on hop-by-hop treatment locally defined on each device. Which technology must the customer select?

Answer options

• A. CBWFQ
• B. LLQ
• C. Diffserv
• D. IntServ

Correct answer: C

Explanation

The correct answer is Diffserv because it allows for individual packet marking and defines treatment on a per-hop basis. CBWFQ and LLQ are specific queuing mechanisms that do not provide the same level of flexibility for distributed QoS, and IntServ focuses on end-to-end QoS rather than the distributed approach needed in this scenario.