300-420 · Question #128
Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.)
The correct answer is A. utilizing forward error correction D. utilizing quality of service. Forward Error Correction (FEC) proactively compensates for packet loss by sending redundant data, which directly improves the application experience for real-time and latency-sensitive traffic (e.g., voice, video) without requiring retransmission. Quality of Service (QoS)…
Question
Which two techniques improve the application experience in a Cisco SD-WAN design? (Choose two.)
Options
- Autilizing forward error correction
- Bimplementing a stateful application firewall
- Cimplementing AMP
- Dutilizing quality of service
- Eimplementing Cisco Umbrella
How the community answered
(21 responses)- A90% (19)
- B5% (1)
- C5% (1)
Explanation
Forward Error Correction (FEC) proactively compensates for packet loss by sending redundant data, which directly improves the application experience for real-time and latency-sensitive traffic (e.g., voice, video) without requiring retransmission. Quality of Service (QoS) classifies and prioritizes traffic so critical applications receive the bandwidth and low-latency treatment they require. Together, these two techniques address the core network-level factors that degrade application performance. A stateful application firewall (B) and AMP (C) are security mechanisms - they protect the network but do not improve application performance. Cisco Umbrella (E) is a cloud-based DNS security service; while it can improve security posture, it does not directly enhance application experience in the SD-WAN transport path.
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