問題文
A regional bank peers with two upstream carriers at its head office. Traffic to a cloud analytics platform must leave through carrier A because that path is metered at a lower rate, even though carrier B advertises a shorter path. The architect must steer only the bank's own outbound choice and must not change what the carriers see. Which attribute should be set, and where does it take effect?
選択肢
- Advertise a lower exit metric toward carrier A so that carrier A prefers the bank's prefixes and the reverse path settles the bank's own exit.
- Configure a static route toward the analytics platform's addresses.
- Prepend extra network numbers to the path advertised toward carrier B so that the path through B looks longer to the bank's own routers.
- Set a higher local preference on the routes learned from carrier A; the value is shared with internal speakers only and decides the bank's own exit choice.