Which metric is commonly used to assess per-link performance in SD-WAN monitors?

• A. Path quality scores
• B. Number of active users
• C. Time of day
• D. Email bounce rate

Answer: (A)

Path quality scores provide a per-link health indicator used in SD-WAN monitoring. They combine measurements like latency, jitter, and packet loss (often along with other factors) to produce a single score for each WAN path, making it easy to compare links and drive decisions such as dynamic path selection and fast failover. The other options don’t reflect the actual condition of a specific network link: the number of active users shows load rather than link quality, time of day describes when traffic happens rather than how well a link performs, and email bounce rate is unrelated to network performance.