フリー問題

問題文

The overlay signaling shows the far switch and the endpoints behind it, yet no encapsulated traffic passes to it. A plain probe to its loopback address fails. Which cause is that?

選択肢

1. That cause is dropped broadcast request from the drafted review documentation.
2. That cause is disabled pause emission from the drafted review documentation.
3. That cause is transport agnostic payload from the drafted review documentation.
4. That cause is unreachable tunnel end from the drafted review documentation.