フリー問題

問題文

A deployment that only records the offending traffic now has to stop it. Which statement about where the sensor goes holds?

選択肢

1. The sensor can stay where it watches a copy, because a sensor watching a copy is able to place packets on the segment that reliably bring the exchange to an end before it completes
2. The sensor can stay where it watches a copy, because a sensor watching a copy is not blocked from telling the switch to withdraw the frames it has copied
3. The sensor has to be placed where the traffic passes through it, since a sensor watching a copy has no dependable way that would keep the traffic from reaching its target
4. The sensor has to be placed so that the traffic passes through it, because a sensor watching a copy is not able to read the payload of the traffic it has been handed a copy of