問題文
A controller wants the topology of a provider network handed to it over the protocol that carries reachability between systems. An engineer has to record how the properties of links and nodes are shaped when they are carried that way, and how many interior domains one system may hold at once. Which statement is correct?
選択肢
- The attributes are carried in a form that is specific about the interior protocol, and one system may hold more than one such domain while a changeover is under way.
- The attributes are carried in a form that is neutral about the interior protocol, and one system may hold more than one such domain while a changeover is under way.
- The attributes are carried in a form that is neutral about the interior protocol, and one system may hold more than one such domain while a failure is under way.
- The attributes are carried in a form that is specific about the interior protocol, and one system may hold more than one such domain while a failure is under way.