Watchguard Network Security Practice Test

What condition does SDWAN fail over under?

1. Latency

2. Jitter

3. Loss

4. All of the above

The correct answer is: All of the above

SD-WAN, or Software-Defined Wide Area Network, is designed to optimize network performance and reliability by intelligently managing traffic across various connections. The technology incorporates multiple metrics to determine when to reroute traffic to maintain optimal application performance. The condition under which SD-WAN fails over includes latency, jitter, and packet loss. Latency refers to the time taken for data to travel from the source to the destination. High latency can impact application performance, particularly for real-time applications like VoIP or video conferencing. Jitter measures the variability in packet arrival times, which can lead to choppy audio or video if not addressed. Packet loss, which occurs when data packets traveling across a network fail to reach their destination, can severely disrupt communication and lead to noticeable drops in performance and service quality. By monitoring all these conditions—latency, jitter, and loss—SD-WAN solutions can automatically switch traffic to a more reliable link when any of these metrics exceed predefined thresholds. This multi-faceted approach ensures that users experience minimal disruption and optimal connectivity, enhancing overall network resilience and user experience.