フリー問題

問題文

An engineer is reading how a gateway keeps two overlay estates from importing each address held by the other. Which statement is correct?

選択肢

1. In the interconnect design for two overlay estates, the gateway advertises the route for addresses it has yet to learn with the address field itself set to unicast, the routes that a gateway sends toward the wide area estate carry a route distinguisher that differs from the one used toward the data center estate, and a route that a gateway receives is queued on the gateway rather than reflected onward.
2. In the interconnect design for two overlay estates, the gateway advertises the route for addresses it has yet to learn with the address field itself set to zero, the routes that a gateway sends toward the wide area estate carry a route distinguisher that differs from the one used toward the data center estate, and a route that a gateway receives is consumed on the gateway rather than reflected onward.
3. In the interconnect design for two overlay estates, the gateway advertises the route for addresses it has yet to learn with the address field itself set to unicast, the routes that a gateway sends toward the wide area estate carry a route reflector that differs from the one used toward the data center estate, and a route that a gateway receives is consumed on the gateway rather than reflected onward.
4. In the interconnect design for two overlay estates, the gateway advertises the route for addresses it has yet to learn with the address field itself set to zero, the routes that a gateway sends toward the wide area estate carry a route reflector that differs from the one used toward the data center estate, and a route that a gateway receives is queued on the gateway rather than reflected onward.