300-415 Question 279
Single answerA network administrator is configuring Application Quality of Experience (App-QoE) on a Cisco SD-WAN network to improve the performance of mission-critical applications. The administrator notices that some applications are experiencing high latency and jitter due to network congestion. Which feature of App-QoE can help mitigate this issue by prioritizing application traffic and ensuring a better user experience?
- A
Forward Error Correction (FEC)
- B
TCP Optimization
- C
Application-Aware Routing
- D
Quality of Service (QoS) traffic shaping
Show answer and explanation
Correct answer: D
Explanation
Quality of Service (QoS) traffic shaping is a key feature of App-QoE in Cisco SD-WAN that allows administrators to prioritize and allocate bandwidth to specific applications. This ensures that mission-critical applications maintain performance during periods of high network congestion, improving the overall user experience.
- A. Incorrect.
Forward Error Correction (FEC) is used to recover lost packets in a lossy network environment, but it does not directly prioritize application traffic or handle congestion.
- B. Incorrect.
TCP Optimization improves TCP performance by adjusting parameters like window size and retransmissions but does not address traffic prioritization or congestion management.
- C. Incorrect.
Application-Aware Routing selects the optimal path for traffic based on real-time link performance metrics but does not shape or prioritize traffic directly to mitigate congestion.
- D. Correct.
Quality of Service (QoS) traffic shaping is used to allocate bandwidth and prioritize application traffic, ensuring critical applications receive the necessary resources during network congestion.