在C/S环境中,以下哪个是建立一个完整TCP连接的正确顺序?()
- A. SYN,SYN/ACK,ACK
- B. PassiveOpen,ActiveOpen,ACK,ACK
- C. SYN,ACK/SYN,ACK
- D. ActiveOpen/PassiveOpen,ACK,ACK
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