Designing Cisco Enterprise Networks (ENSLD) — Question 56

An engineer must design a solution to connect a customer to the Internet. The solution will include a Layer 3 circuit with a CIR of 50 Mbps from the service provider. The hand-off from the provider's switch to the customer's router is 1Gbps. Which solution should the engineer include to prevent potential issues with choppy voice traffic?

Answer options

• A. Reduce the bandwidth of the connection to the router.
• B. Implement hierarchical QoS with a parent policing policy.
• C. Implement hierarchical QoS with a parent shaping policy.
• D. Add a bandwidth statement to the router interface.

Correct answer: C

Explanation

The correct answer is C, as implementing hierarchical QoS with a parent shaping policy will help manage and smooth out traffic flows, ensuring that voice traffic is prioritized and not disrupted. Options A and D do not address the need for quality management in voice traffic, while option B's policing policy may drop excess traffic rather than shaping it, which could lead to choppy voice calls.