Cisco
300-415 · Question #88
300-415 Question #88: Real Exam Question with Answer & Explanation
The correct answer is A: turn on "Enable TCP Optimization". Enabling TCP Optimization on the WAN Edge allows the SD-WAN fabric to proxy TCP connections and tune TCP behavior, improving throughput for connection-oriented traffic by reducing the impact of WAN latency.
Security and Quality of Service
Question
An engineer is tasked to improve throughput for connection-oriented traffic by decreasing round-trip latency Which configuration will achieve this goal?
Options
- Aturn on "Enable TCP Optimization"
- Bturn off "Enhance ECMP Keying"
- Cturn off "Enable TCP Optimization"
- Dturn on "Enhance ECMP Keying"
Explanation
Enabling TCP Optimization on the WAN Edge allows the SD-WAN fabric to proxy TCP connections and tune TCP behavior, improving throughput for connection-oriented traffic by reducing the impact of WAN latency.
Common mistakes.
- B. Disabling Enhance ECMP Keying affects load-balancing hash inputs across equal-cost paths, but does not directly reduce RTT or improve TCP throughput.
- C. Turning off TCP Optimization would leave TCP connections unoptimized across the WAN, worsening rather than improving throughput under high-latency conditions.
- D. Enhance ECMP Keying improves flow distribution across multiple WAN links, but enabling it does not reduce round-trip latency or improve per-flow TCP throughput.
Concept tested. Cisco SD-WAN TCP Optimization for WAN throughput improvement
Topics
#TCP Optimization#SD-WAN Performance#Latency Reduction#Throughput Improvement
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