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Multiple Choice

The observation that a user streaming video on a guest WLAN is evidence of an Internet WAN problem is:

Streaming video on a guest WLAN shows that the path from that user’s network to the Internet is functioning for that moment, but it does not prove a WAN problem. WAN problems are issues that affect connectivity beyond the local network, typically seen as widespread failures, high latency, or packet loss across many users or destinations. A single user’s streaming success could be due to that user’s specific route, a cached CDN edge nearby, or other factors that don’t reflect the overall WAN health. To diagnose WAN problems, you’d look for signs across multiple users and paths—like external reachability failures, persistent high latency, or repeated packet loss detected via tests to several external endpoints. So this observation alone isn’t evidence of an Internet WAN problem.

Streaming video on a guest WLAN shows that the path from that user’s network to the Internet is functioning for that moment, but it does not prove a WAN problem. WAN problems are issues that affect connectivity beyond the local network, typically seen as widespread failures, high latency, or packet loss across many users or destinations. A single user’s streaming success could be due to that user’s specific route, a cached CDN edge nearby, or other factors that don’t reflect the overall WAN health. To diagnose WAN problems, you’d look for signs across multiple users and paths—like external reachability failures, persistent high latency, or repeated packet loss detected via tests to several external endpoints. So this observation alone isn’t evidence of an Internet WAN problem.