問題文
One control frame in the capture confirms many separately checked units at once instead of one at a time. Which pairing names that frame and the part inside it that says which of the units actually arrived?
選択肢
- Confirming many units at once is done by the unicast report, and which of them arrived is carried in the elapsed marker that any tally of retransmissions depends upon.
- Confirming many units at once is done by the aggregate report, and which of them arrived is carried in the elapsed marker that any tally of retransmissions depends upon.
- Confirming many units at once is done by the aggregate report, and which of them arrived is carried in the bitmap marker that any tally of retransmissions depends upon.
- Confirming many units at once is done by the unicast report, and which of them arrived is carried in the bitmap marker that any tally of retransmissions depends upon.