フリー問題

問題文

An engineer notices that a point-to-point OSPF link between two routers has no router acting as the segment representative, while a broadcast segment elsewhere in the same area does have one. Why does the point-to-point link behave differently?

選択肢

1. No representative is elected because the link has unauthenticated segment topology on that segment.
2. No representative is elected because the link has mismatched version topology on that segment.
3. No representative is elected because the link has paired endpoint topology on that segment.
4. No representative is elected because the link has asymmetric timer topology on that segment.