300-415 Question 277
Single answerA company is using Cisco SD-WAN to manage its WAN infrastructure. The IT team has enabled Application Quality of Experience (App-QoE) for critical business applications. During a troubleshooting session, they notice that some applications are not performing well despite having sufficient bandwidth. Which feature of App-QoE can the team utilize to optimize application performance?
- A
Forward Error Correction (FEC)
- B
TCP Optimization
- C
Dynamic Path Selection
- D
Bidirectional Forwarding Detection (BFD)
Show answer and explanation
Correct answer: B
Explanation
App-QoE includes features like TCP Optimization to enhance the performance of applications using TCP by improving throughput and reducing retransmissions. This feature is specifically designed for optimizing application performance, making it the best choice in this scenario.
- A. Incorrect.
Forward Error Correction (FEC) is used to recover lost packets in real-time by sending redundant data. While it helps improve data integrity, it is not directly related to optimizing the performance of applications that rely on TCP-based communication.
- B. Correct.
TCP Optimization is part of App-QoE and is specifically designed to improve the performance of TCP-based applications by enhancing flow control, reducing retransmissions, and improving throughput. This directly addresses application performance issues.
- C. Incorrect.
Dynamic Path Selection enables SD-WAN to choose the best path for traffic dynamically based on link performance. While useful for routing, it is not directly tied to resolving TCP-specific application performance issues.
- D. Incorrect.
Bidirectional Forwarding Detection (BFD) is a protocol used to detect link failures quickly. While it ensures link reliability, it does not optimize application performance.