CCDE: Cisco Certified Design Expert (Practical) — Question 73

An engineer is designing the QoS strategy for Company XYZ. Based on initial analysis, a lot of scavenger type of traffic is traversing the network’s 20Mb Internet link toward the service provider. The new design must use a QoS technique that limits scavenger traffic to 2 Mbps, which helps avoid oversubscription of the link during times of congestion. Which QoS technique can be used to facilitate this requirement?

Answer options

• A. class-based traffic policing
• B. class-based traffic shaping
• C. CBWFQ
• D. LLQ

Correct answer: A

Explanation

Class-based traffic policing is the correct answer because it allows for limiting the bandwidth of specific types of traffic, such as scavenger traffic, to a defined rate, in this case, 2 Mbps. The other options, while they are QoS techniques, do not specifically enforce strict bandwidth limits like policing does; traffic shaping smooths traffic but does not outright limit it in the same way.