問題文
A third brokering machine is added to spread the load. Two days later the administrator notices that older machines still only ever talk to the original two. The question is how machines learn the list at all and what makes them pick up the addition. Which combination holds?
選択肢
- Machines learn which brokers exist from the circulated list handed to them when they start, and they only notice the third one after the updated instruction reaches them.
- Machines learn which brokers exist from the patched list handed to them when they start, and they only notice the third one after the mirroring instruction reaches them.
- Machines learn which brokers exist from the patched list handed to them when they start, and they only notice the third one after the updated instruction reaches them.
- Machines learn which brokers exist from the circulated list handed to them when they start, and they only notice the third one after the mirroring instruction reaches them.