フリー問題

問題文

A note of the discovery kind lands on a router that already holds a record of its sender, and the operator walks through the steps the protocol lays down for it. Which option is correct about the holding timer, about a plain note arriving on an interface, and about the spacing the protocol advises?

選択肢

1. About those steps the holding timer starts over on a matching greeting, a plain note that lands passes where its pipe bears that setup, and the spacing between notes holds to a quarter of that span, as the specification lays out.
2. About those steps the holding timer starts over on a matching greeting, a plain note that lands passes where its port bears that setup, and the spacing between notes holds to a third of that span, as the specification lays out.
3. About those steps the holding timer starts over on a matching session, a plain note that lands passes where its pipe bears that setup, and the spacing between notes holds to a third of that span, as the specification lays out.
4. About those steps the holding timer starts over on a matching session, a plain note that lands passes where its port bears that setup, and the spacing between notes holds to a quarter of that span, as the specification lays out.