フリー問題

問題文

A design puts one central site at the middle of a Layer 3 VPN and needs the outer sites to swap routes that are finer than a default route with one another. What does that ask of the link between the central customer device and its edge device?

選択肢

1. A single interface bearing two route distinguishers of that one central site
2. One interface rather than the two interfaces that are otherwise advised
3. Two interfaces rather than the sole one that is otherwise advised
4. A bundle of two links rather than the sole one that is otherwise advised