Cisco
300-415 · Question #325
300-415 Question #325: Real Exam Question with Answer & Explanation
The correct answer is B: applications with occasional invalid data input and poor performance. Forward Error Correction (FEC) in Cisco SD-WAN addresses packet loss on WAN links, which can manifest as poor application performance or data integrity issues due to missing packets.
Security and Quality of Service
Question
What does forward error correction addresses in Cisco SD-WAN?
Options
- Areduced application performance degradation related to service degradation
- Bapplications with occasional invalid data input and poor performance
- Ctraffic flows with increased delay over a particular transport
- Dinefficient traffic forwarding caused by inbound shapers
Explanation
Forward Error Correction (FEC) in Cisco SD-WAN addresses packet loss on WAN links, which can manifest as poor application performance or data integrity issues due to missing packets.
Common mistakes.
- A. While FEC ultimately aims to reduce application performance degradation, this option is too general and does not specify the direct cause (packet loss) that FEC addresses.
- C. FEC does not directly address increased delay (latency); its primary function is to combat packet loss.
- D. FEC is unrelated to inbound traffic shaping; it is a mechanism for mitigating packet loss by adding redundancy to the data stream.
Concept tested. SD-WAN Forward Error Correction (FEC) function
Topics
#Forward Error Correction (FEC)#SD-WAN optimization#Packet Loss Mitigation#Application Performance
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