They waited and waited for something _________ to happen.
A. excite B. excited C. exciting D. to excite
第1题:
第2题:
第3题:
下面哪个定时器追踪数据段发送和确认的接收之间的时间?
A.重传(retransmission)
B.持续(persistence)
C.保活(keepalive)
D.时间等待(time-waited)
第4题:
第5题:
当下面的哪个定时器超时的时候,发方TCP实体会发出一个叫probe的特殊数据段?
A.重传(retransmission)
B.持续(persistence)
C.保活(keepalive)
D.时间等待(time-waited)
第6题:
为了防止两个TCP实体之间的连接长时间空闲,启用了下面哪种定时器?
A.重传(retransmission)
B.持续(persistence)
C.保活(keepalive)
D.时间等待(time-waited)