为了处理零窗口大小(windowsize=0)通告,启用了下面哪种定时器?

为了处理零窗口大小(windowsize=0)通告,启用了下面哪种定时器?

A.持续(persistence)

B.重传(retransmission)

C.保活(keepalive)

D.时间等待(time-waited)

正确答案:持续(persistence)

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