假设主机A通过Telnet连接了主机B.连接建立后。在命令行输入“C”。如图所示,主机B收到字符“C”后，用于运输回送消息的TCP段的序列号seq应为(此空作答)，而确认号ack应为()
- A.随机数
- B.42
- C.79
- D.43
正确答案及解析
正确答案
解析
ack确认号表示期待接收的下一个报文的需要，标志之前的报文都已经成功接收；seq一个字节一个需要，A发送给B的ack=79，所以B发送给A的seq=79。
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