フリー問題

問題文

Two engineered tunnels of different priority meet on one link after a failure elsewhere, and the router in the middle cannot honor both reservations. It has been told to make the lower priority one yield gently. An engineer has to record what the router does to the reservation it had been holding for that tunnel, and what it puts out in place of the message that would tear the path down. Which statement is correct?

選択肢

1. The router holds the bandwidth it had been counting for the yielding tunnel, and in place of a teardown the message that goes out reports an outcome on the path.
2. The router holds the bandwidth it had been counting for the yielding tunnel, and in place of a teardown the message that goes out reports an error on the path.
3. The router zeroes the bandwidth it had been counting for the yielding tunnel, and in place of a teardown the message that goes out reports an error on the path.
4. The router zeroes the bandwidth it had been counting for the yielding tunnel, and in place of a teardown the message that goes out reports an outcome on the path.